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Daily updated list of Tech Company OAs and Interview Problems. Save your time from finding them all over the internet.

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2026 & 2027 Tech OA & Interview Questions

๐Ÿข Full company list (392+) โ€” click to expand

Abnormal Security, Abridge, Accenture, Addepar, Adobe, Adyen, Affirm, Agoda, Airbnb, Airbyte, Airtable, Airwallex, Akuna, Akuna Capital, Alarm.com, Alchemy, Alpaca, Amazon, Ambience Healthcare, AMD, American Express, Amperity, Anchorage, Anduril, Anthropic, Apple, Applied Intuition, Arista Networks, Asana, Assort Health, Astrotalk, AT&T, Atlassian, Attentive, Aurora Innovation, Autodesk, Axon, Barclays, Baseten, Bilt Rewards, BitGo, Blackrock, Blinkit, Bloomberg, Bloomberg LP, BNP, BNY Mellon, Bobyard, Booking.com, Boston Consulting Group, Box, Braze, Brex, ByteDance, Canva, Capgemini, Capillary Technologies, Capital One, Careem, Carta, Cerebras, Chainalysis, Character.AI, Charta Health, Chicago Trading, Chicago Trading Company, Circle, Cisco, Citadel, Clay, ClearTax, Clickhouse, Clio, Clipboard Health, Cloudflare, Coalition, Codeium, Cognitiv, Cohere, Coinbase, Commure, Commvault, Concentric AI, Confluent, Coupa Software, Cresta, CrowdStrike, Crusoe, Cursor, Cvent, Databricks, Datadog, DatologyAI, David AI, DE Shaw, Decagon, Deloitte, Deutsche Bank, DigitalOcean, Discord, Distyl AI, DocuSign, DoorDash, Dropbox, DRW, DTCC, Ease, Eat Club, eBay, Edge, Eightfold, Elastic, ElevenLabs, Epam, Epic, Epify, Ericsson, Etched, EvenUp, Expedia, FactSet, Figma, Fireworks AI, Fivetran, Flexport, FlexTrade, Flipkart, FluidStack, Fortinet, Fox Corporation, Freshworks, Gatik AI, GE Vernova, Gecko Robotics, Geico, General Motors, Geneva Trading, GEP, Get My Parking, Giga, GitHub, Globalization Partners, Gojek, Goldman Sachs, GoodScore, Google, Grab, Grammarly, Groww, Grubhub, Guidewire, Gusto, HackerRank, Hadrian, Harness, Harvey, Headlands, Headway, Hebbia, Highspot, HSBC, Hudson River Trading, Hyper Verge, IBM, IDFC, Illumio, IMC, IMC Trading, Indeed, Infosys, Instacart, Intuit, Ironclad, IXL Learning, Jane Street, JioStar, JP Morgan, JP Morgan Chase, JPMorgan Chase, Juspay, Kalshi, Kaseya, Kickdrum, Kotak Mahindra Bank, Lambda, LangChain, Latent, Lenskart, LinkedIn, LiveKit, Luma AI, Lyft, MakeMyTrip.com, MathWorks, Matroid, Maven Securities, McKinsey, Medallion, Meesho, Mercor, Mercury, Mercury Insurance, Meta, Micro1, Microsoft, Millennium, Mintlify, Mistral AI, Modal, Modular, MongoDB, Morgan Stanley, Motive, Moveworks, NatWest, Netflix, New Relic, Nextdoor, Nike, Inc., Ninja Van, Nubank, Nuro, Nutanix, Nvidia, Nykaa, Observer.AI, Odoo, Okta, Old Mission, Omnissa, Onehouse, OnePay, OneTrust, Onix, OpenAI, Opendoor, Optiver, Oracle, Oscar Health, Otter.ai, Oura, Palantir, Patreon, Paypal, PayPay, Paytm, Perplexity AI, Persona, PhonePe, Physical Intelligence, Pinterest, Plaid, Point72, PostHog, Postman, Profound, Publicis Sapients, Pure Storage, QRT, Qualified Health AI, Quince, Quora, Ramp, Razorpay, Reddit, RedNote, Reducto, Remitly, Render, Replit, Retell AI, Retool, Revolut, Rippling, Rivian, Robinhood, Roblox, Rogo, Roku, Rubrik, Runloop, Runway, Rupeek, Rurik, Safe Security, Salesforce, SambaNova Systems, Samsara, Samsung, Sarvam AI, SavantLabs, Scale AI, Scribd, SeekOut, SentinelOne, Sentry, ServiceNow, Sesame, Shield AI, Shopify, Siemens, Sierra, Sig, Skydio, Skyscanner, Slack, Snap Inc., Snorkel AI, Snowflake, Sofi, SpaceX, Splunk, Spotify, Spotnana, Sprinter Health, SquadStack.ai, Square, Squarepoint, Squarepoint Capital, Stable Money, StackAdapt, Strala, Strava, Stripe, Sumo Logic, Suno, Supabase, Superhuman, Susquehanna International Group, Susquehanna International Group (SIG), Swiggy, Syfe, Target, TCS, Tekion, Temporal, Temu, Tesla, The D. E. Shaw Group, The D.E. Shaw Group, The Trade Desk, The Voleon Group, The Walt Disney Company, ThoughtSpot, TikTok, Toast, Together AI, Toptal, Toshiba, Trade Desk, Trend Micro, Twilio, Twitch, Two Sigma, Uber, Uber Freight, UiPath, Upstart, Valon, Vanta, Vercel, Verkada, Visa, Waabi, Walleye Capital, Walmart, Wayfair, Waymo, Wayve, Wells Fargo, WeRide, Wex, Whatnot, Wolverine Trading, Workday, World Wide Technology, Xperi, YahoO, Yelp, Ziina, Zip, Zipline, ZipRecruiter, Zolando, ZoloStays, Zomato / Eternal, Zoom, Zoox, Zopsmart, Zorvyn, ZS, Zscaler.

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Formats: Coding (3,039) ยท SQL (52) ยท System design (483) ยท Low-level design (123) ยท AI coding (58)

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Company OA / Interview Question Format Practice Updated
Capital One Summarize Taxi Drivers and Rides SQL Practice ๐Ÿ”ฅ Oct 01, 2026
Capital One Build Taxi Driver Performance Features SQL Practice ๐Ÿ”ฅ Oct 01, 2026
Capital One Prepare Taxi Driver Classification Data SQL Practice ๐Ÿ”ฅ Oct 01, 2026
Capital One Predict Taxi Driver Classes SQL Practice ๐Ÿ”ฅ Oct 01, 2026
TikTok Leftmost Memory Block Allocator (for mle also :) Coding Practice ๐Ÿ”ฅ Sep 30, 2026
Rippling Token Validation Coding Practice ๐Ÿ”ฅ Sep 30, 2026
Rippling REST API: Highest International Students Coding Practice ๐Ÿ”ฅ Sep 30, 2026
Rippling Server Investment Coding Practice ๐Ÿ”ฅ Sep 30, 2026
TikTok Cyclic Shift to a Reverse-Sorted Array Coding Practice ๐Ÿ”ฅ Sep 30, 2026
TikTok Count Coordinates Illuminated by Exactly One Lamp Coding Practice ๐Ÿ”ฅ Sep 30, 2026
Capital One Analyze House and Viewing Metrics SQL Practice ๐Ÿ”ฅ Sep 30, 2026
Capital One Build House Viewing Features SQL Practice ๐Ÿ”ฅ Sep 30, 2026
Capital One Prepare House Price Regression Data SQL Practice ๐Ÿ”ฅ Sep 30, 2026
Capital One Predict House Prices SQL Practice ๐Ÿ”ฅ Sep 30, 2026
TikTok Sort Matrix Borders Coding Practice ๐Ÿ”ฅ Sep 30, 2026
TikTok Count Even-Digit Numbers Coding Practice ๐Ÿ”ฅ Sep 30, 2026
TikTok Rectangle Fit Queries Coding Practice ๐Ÿ”ฅ Sep 30, 2026
TikTok Construct WDL String Coding Practice ๐Ÿ”ฅ Sep 30, 2026
Google Design a Manufacturing Operations Agent System design Practice ๐Ÿ”ฅ Sep 30, 2026
Oracle / Retell AI / Apple / Google / Walmart / Flipkart / Globalization Partners / Amazon / Reddit / Atlassian Design a Distributed Rate Limiter System design Practice ๐Ÿ”ฅ Sep 29, 2026
Moveworks / Atlassian Design Cloud Usage Billing Infrastructure System design Practice ๐Ÿ”ฅ Sep 29, 2026
Amazon / Instacart / Zip / Nykaa Design a Last-Unit Inventory Reservation Service System design Practice ๐Ÿ”ฅ Sep 29, 2026
Autodesk / Nykaa Design a Rapid Grocery Ordering Platform System design Practice ๐Ÿ”ฅ Sep 29, 2026
Nykaa Design a Shared Expense Splitting Service Low-level design Practice ๐Ÿ”ฅ Sep 29, 2026
OpenAI Leaves Remaining After Wind Gusts Coding Practice ๐Ÿ”ฅ Sep 29, 2026
OpenAI Count Routes Through Four Shop Types Coding Practice ๐Ÿ”ฅ Sep 29, 2026
OpenAI Invert or Blur an Image Coding Practice ๐Ÿ”ฅ Sep 29, 2026
OpenAI Optimal First-Player Card Score Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Waymo Design Fleet Map Data Collection System design Practice ๐Ÿ”ฅ Sep 29, 2026
OpenAI / The D.E. Shaw Group / Zoox / Salesforce / Kotak Mahindra Bank / Mercor Design an Online Payment Processing System System design Practice ๐Ÿ”ฅ Sep 29, 2026
Postman / Anduril / DigitalOcean / Oracle / Adobe / Uber Freight / Grab / Goldman Sachs / Salesforce / Vercel / Sentry / Motive / Deloitte / ZipRecruiter Design a URL Shortening Service System design Practice ๐Ÿ”ฅ Sep 29, 2026
DoorDash Food Review System System design Practice ๐Ÿ”ฅ Sep 29, 2026
Amazon / Lyft / Google / Pinterest / Snowflake Design a Web Crawler System design Practice ๐Ÿ”ฅ Sep 29, 2026
Netflix / FluidStack / DigitalOcean / Nuro / Together AI Design a Machine-Learning Job Scheduler System design Practice ๐Ÿ”ฅ Sep 29, 2026
Capital One Design a Credit Card Account and Authorization Platform System design Practice ๐Ÿ”ฅ Sep 29, 2026
Pinterest / DoorDash / Patreon Design an Ad Event Measurement Platform System design Practice ๐Ÿ”ฅ Sep 29, 2026
Amperity Design a Read-Once Secret Sharing Service System design Practice ๐Ÿ”ฅ Sep 29, 2026
The D.E. Shaw Group / Uber Design and Implement a Parking Lot Low-level design Practice ๐Ÿ”ฅ Sep 29, 2026
Uber Freight Design an In-Memory File System Low-level design Practice ๐Ÿ”ฅ Sep 29, 2026
Mercor Design a Dataset Copy API System design Practice ๐Ÿ”ฅ Sep 29, 2026
Microsoft Design a Lab Machine Fleet Monitor System design Practice ๐Ÿ”ฅ Sep 29, 2026
Amperity Design an Online SQL Service Over a Data Lake System design Practice ๐Ÿ”ฅ Sep 29, 2026
OpenAI / Sprinter Health Digital Game Distribution Platform System design Practice ๐Ÿ”ฅ Sep 29, 2026
DoorDash Dasher Pay with Store Waits and Peak Hours Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Stripe Parse Boolean Rule Expressions Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Lyft Stateful Paginated Fetch N Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Google Earliest Full Connectivity with Edge Removals Coding Practice ๐Ÿ”ฅ Sep 29, 2026
DoorDash Customer Bootstrap API Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Amazon Largest Binary-String Subset Within Bit Budgets Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Capital One Banking System with Top Activity Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Stripe Subscription and Usage-Based Billing Calculator Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Stripe Request Routing System Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Uber Freight Maximize Compatible Car Riders Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Lyft Nested Transaction Key-Value Store with Value Counts Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Affirm High-Card Pot Game Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Amazon Lowest Common Ancestor in an Inserted BST Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Amazon Maximize K-Element AND with an Increment Budget Coding Practice ๐Ÿ”ฅ Sep 29, 2026
DatologyAI Multiline Text Editor with Cursor Movement Coding Practice ๐Ÿ”ฅ Sep 29, 2026
DatologyAI SimpleRDD Multiset Intersection Coding Practice ๐Ÿ”ฅ Sep 29, 2026
DatologyAI SimpleRDD Word Count Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Google Choose a Shortest Path That Avoids Bob Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Google Count Matrix Paths Through Ordered Checkpoints Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Google Count Enclosed Freshwater Regions Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Google Maximum-Area Rectangle from Points Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Google Safest Mouse Path Away from a Cat Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Google Shortest Land Path Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Google Unique Elements in Range Queries Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Google Maximum Profit from Non-Overlapping Jobs Coding Practice ๐Ÿ”ฅ Sep 29, 2026
IBM Variadic Function Library Matches Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Mercor CSV Row Serializer Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Mercor Merge Sort Report with a Noisy Comparator Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Microsoft Foreground Region Sizes Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Netflix Score-Rotating Movie Playlist Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Netflix Repeated Titles in Viewing History Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Okta Randomized Collection with Duplicate Values Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Okta Top-Down Employee Reporting Forest Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Rippling Best and Worst Camel Card Completions Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Snowflake Length-Prefixed String Codec Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Stripe Render a Task Tree from CSV Rows Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Stripe Invoice / Payment Reconciliation Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Uber Dynamic Island Counts Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Uber K Smallest Squares from a Sorted Array Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Uber Count Connected Islands Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Valon Out-of-Order Loan Ledger Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Verkada Host Log Parser Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Waymo Island Area and Water Boundary Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Waymo Linked Perception History Coding Practice ๐Ÿ”ฅ Sep 29, 2026
WhatNot Attraction Route Without Reusing Trails Coding Practice ๐Ÿ”ฅ Sep 29, 2026
WhatNot Earliest Car for Each Passenger Coding Practice ๐Ÿ”ฅ Sep 29, 2026
WhatNot Minimum Stores for a Shopping List Coding Practice ๐Ÿ”ฅ Sep 29, 2026
Microsoft Shopkeeper Final Price Summary Coding Practice ๐Ÿ”ฅ Sep 28, 2026
Microsoft Maximum Reward Points Coding Practice ๐Ÿ”ฅ Sep 28, 2026
OpenAI Network Endpoint or Cycle Boundary Coding Practice ๐Ÿ”ฅ Sep 28, 2026
OpenAI Largest Microorganism After Consumption Coding Practice ๐Ÿ”ฅ Sep 28, 2026
OpenAI Repair One Movement Instruction Coding Practice ๐Ÿ”ฅ Sep 28, 2026
Attentive Design Retailer Product Catalog Serving System design Practice ๐Ÿ”ฅ Sep 28, 2026
DigitalOcean / Attentive Ad Serving and Performance Statistics System design Practice ๐Ÿ”ฅ Sep 28, 2026
Amazon / Tesla / Datadog / Oracle Design a Video Storage and Streaming Platform System design Practice ๐Ÿ”ฅ Sep 28, 2026
Amazon Minimum Merge Conflicts Coding Practice ๐Ÿ”ฅ Sep 28, 2026
Oracle Next Permutation Coding Practice ๐Ÿ”ฅ Sep 28, 2026
Abridge Decode String Coding Practice ๐Ÿ”ฅ Sep 28, 2026
Abridge Flip, Invert, and Smooth a Binary Image Coding Practice ๐Ÿ”ฅ Sep 28, 2026
Abridge String Compression Coding Practice ๐Ÿ”ฅ Sep 28, 2026
Abridge Sum Multiples of 3, 5, or 7 Coding Practice ๐Ÿ”ฅ Sep 28, 2026
Amazon Evaluate Division Coding Practice ๐Ÿ”ฅ Sep 28, 2026
Amazon Apply a Reversi Move Coding Practice ๐Ÿ”ฅ Sep 28, 2026
Amazon Longest Content Window with Bounded Labels Coding Practice ๐Ÿ”ฅ Sep 28, 2026
ByteDance Spiral Matrix Traversal Coding Practice ๐Ÿ”ฅ Sep 28, 2026
Coinbase Select a Fee-Maximizing Dependency-Closed Block Coding Practice ๐Ÿ”ฅ Sep 28, 2026
Confluent Sequential Phrase Search Across Documents Coding Practice ๐Ÿ”ฅ Sep 28, 2026
Confluent Sudoku Board Validation Coding Practice ๐Ÿ”ฅ Sep 28, 2026
Confluent Sudoku Puzzle Solver Coding Practice ๐Ÿ”ฅ Sep 28, 2026
Confluent Word Search Across Documents Coding Practice ๐Ÿ”ฅ Sep 28, 2026
IBM Count Triplets Within a Value Range Coding Practice ๐Ÿ”ฅ Sep 28, 2026
IBM Count Active Employee Access Grants Coding Practice ๐Ÿ”ฅ Sep 28, 2026
Uber Grid Robot Route with Charging Priorities Coding Practice ๐Ÿ”ฅ Sep 28, 2026
Wex String Permutations in Custom Character Order Coding Practice ๐Ÿ”ฅ Sep 28, 2026
Wex Stack Command Output Coding Practice ๐Ÿ”ฅ Sep 28, 2026
Capital One Check Array Arithmetic Expressions Coding Practice ๐Ÿ”ฅ Sep 28, 2026
Capital One Match Songs with Repeatable Animations Coding Practice ๐Ÿ”ฅ Sep 28, 2026
Capital One Maximum Rhombic Area Sum Coding Practice ๐Ÿ”ฅ Sep 28, 2026
Capital One Count Subarrays with K Disjoint Equal Pairs Coding Practice ๐Ÿ”ฅ Sep 28, 2026
Kotak Mahindra Bank Design a Movie Ticket Booking Platform Low-level design Practice ๐Ÿ”ฅ Sep 28, 2026
Confluent Design a Podcast Subscription Feed API and Data Model System design Practice ๐Ÿ”ฅ Sep 28, 2026
Netflix / Oracle / Google / Meta / ByteDance / Astrotalk / LinkedIn / Microsoft Design a Personalized Recommendation System System design Practice ๐Ÿ”ฅ Sep 27, 2026
Affirm Count Distinct Underwriting PII Values Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Affirm Cross-Day User Trust Scores Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Affirm Propagating Fraud Detector Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Attentive Lisp Expression Parser Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Attentive Messages in an Inclusive Timestamp Range Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Bloomberg LP Lowest Common Ancestor in an N-ary Tree Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Google Boolean Expression Results After Leaf Flips Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Google Merge Hierarchical Trees by Name Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Verkada Find the Unique User with Access to Every Camera Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Aurora Innovation Safe LLM Driving Intent Platform System design Practice ๐Ÿ”ฅ Sep 27, 2026
Microsoft Maximum Valid Substring Frequency Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Microsoft Minimum Non-Adjacent Selection Capability Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Stripe Deployment Window Scheduler Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Snowflake / Dropbox / Temporal / Attentive Design a Fault-Tolerant Cloud Queue Service System design Practice ๐Ÿ”ฅ Sep 27, 2026
Optiver Count Straight-Line Word Occurrences in a Grid Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Optiver Fastest Average Speed over a Rolling Kilometer Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Google Alternating Direction Jump Game Coding Practice ๐Ÿ”ฅ Sep 27, 2026
OpenAI Prefix Matrix Products and Autograd Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Bloomberg LP Minimum Replacements to Make Two Strings Anagrams Coding Practice ๐Ÿ”ฅ Sep 27, 2026
OpenAI Modal Lock and Fair Modal Lock Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Google Build a Combined People Schedule Coding Practice ๐Ÿ”ฅ Sep 27, 2026
OpenAI / Figma / Cresta / Tekion Design an Agent Evaluation Platform System design Practice ๐Ÿ”ฅ Sep 27, 2026
Uber / Mercor / Tekion Design a Persistent Multi-Thread AI Chat System design Practice ๐Ÿ”ฅ Sep 27, 2026
Headway / Expedia Vacation Rental Search and Booking System design Practice ๐Ÿ”ฅ Sep 27, 2026
Amazon Minimum Time to Spread Through a Grid Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Amazon Currency Conversion Rate Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Google Equal Sum Split After One Removal Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Addepar Flat Records to a Hierarchical Tree Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Amazon Maximum Stock Profit with At Most Two Transactions Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Amazon House Robber Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Amazon Lisp Expression Parser Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Amazon Maximize Consecutive Equal Answers Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Amazon Most Frequent Name Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Arista Networks API Bandwidth Allocation Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Arista Networks LFU Cache Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Expedia Scramble String Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Expedia Smallest Sufficient Team Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Google Balance a Two-Letter String with at Most Two Cuts Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Google Find a Good-Subarray Endpoint Pair Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Tekion Peak Resource Usage Across Weighted Intervals Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Meta Deterministic K-Means Assignments Coding Practice ๐Ÿ”ฅ Sep 27, 2026
LinkedIn Merge N-Ary Trees by Key Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Google Route Pattern Matcher Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Google Course Schedule II Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Meta Linear Layer Forward and Backward Passes Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Meta Reservoir Sampling with Recorded Draws Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Meta Stochastic Gradient Descent with Momentum Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Meta Top K Largest Values with a Heap Coding Practice ๐Ÿ”ฅ Sep 27, 2026
Tekion Design a Durable Agent Workflow Runtime System design Practice ๐Ÿ”ฅ Sep 27, 2026
Amazon Design an Extensible Financial Account with Charges and Tax Low-level design Practice ๐Ÿ”ฅ Sep 27, 2026
Expedia Design Collaborative Versioned File Storage Low-level design Practice ๐Ÿ”ฅ Sep 27, 2026
Airwallex 4Sum Index Quadruples Coding Practice ๐Ÿ”ฅ Sep 26, 2026
IBM Maximum Points by Deleting Elements Coding Practice ๐Ÿ”ฅ Sep 26, 2026
Suno Longest Path in a Directed Acyclic Graph Coding Practice ๐Ÿ”ฅ Sep 26, 2026
Suno Referral Credits After a First Song Coding Practice ๐Ÿ”ฅ Sep 26, 2026
Wayve Factorial Without Multiplication Coding Practice ๐Ÿ”ฅ Sep 26, 2026
Wayve Non-Maximum Suppression Coding Practice ๐Ÿ”ฅ Sep 26, 2026
Wayve Longest Stationary Sensor Interval Coding Practice ๐Ÿ”ฅ Sep 26, 2026
Waabi Root Mean Square Error Coding Practice ๐Ÿ”ฅ Sep 26, 2026
Rogo Password From Ordering Hints Coding Practice ๐Ÿ”ฅ Sep 26, 2026
Etched Periodic Event Loop Coding Practice ๐Ÿ”ฅ Sep 26, 2026
Etched DMA Stream Distribution Coding Practice ๐Ÿ”ฅ Sep 26, 2026
Modal Single-Flight Chunk Cache Coding Practice ๐Ÿ”ฅ Sep 26, 2026
Waabi Autonomous Driving Auto-Labeling Pipeline System design Practice ๐Ÿ”ฅ Sep 26, 2026
Wayve / Waabi Autonomous Driving Simulation Platform System design Practice ๐Ÿ”ฅ Sep 26, 2026
Modal Burst-Aware Serverless Task Scheduler System design Practice ๐Ÿ”ฅ Sep 26, 2026
Supabase Database-Per-Project Control Plane System design Practice ๐Ÿ”ฅ Sep 26, 2026
Wayve / Waabi Driving Log Ingestion and Query Platform System design Practice ๐Ÿ”ฅ Sep 26, 2026
Supabase Global Edge Functions Platform System design Practice ๐Ÿ”ฅ Sep 26, 2026
Lambda High-Throughput ML Object Store System design Practice ๐Ÿ”ฅ Sep 26, 2026
Lambda Kubernetes GPU Workload Control Plane System design Practice ๐Ÿ”ฅ Sep 26, 2026
Modal Large Model Artifact Cache System design Practice ๐Ÿ”ฅ Sep 26, 2026
LangChain LLM Observability and Alerting Platform System design Practice ๐Ÿ”ฅ Sep 26, 2026
Lambda Multi-Tenant GPU Cluster Scheduler System design Practice ๐Ÿ”ฅ Sep 26, 2026
Supabase Real-Time Database Change Broadcast System design Practice ๐Ÿ”ฅ Sep 26, 2026
Modal Warm GPU Container Pool System design Practice ๐Ÿ”ฅ Sep 26, 2026
Rippling Server Management Coding Practice ๐Ÿ”ฅ Sep 26, 2026
Rippling Costliest Chocolate Coding Practice ๐Ÿ”ฅ Sep 26, 2026
Rippling Consistent Logs Coding Practice ๐Ÿ”ฅ Sep 26, 2026
Infosys / Waymo / Goldman Sachs / Onehouse / Amazon / Meta / Flipkart / Luma AI / Motive Design Ride-Hailing Dispatch and Trip Lifecycle System design Practice ๐Ÿ”ฅ Sep 26, 2026
OpenAI / Commvault / Zomato / Eternal Design an Online Chess Platform System design Practice ๐Ÿ”ฅ Sep 26, 2026
Pinterest / OpenAI / Axon / Tesla Design a Blob Storage Service System design Practice ๐Ÿ”ฅ Sep 26, 2026
Salesforce / Replit / Sarvam AI / Microsoft / Gojek / Goldman Sachs / Amazon / Blinkit / Reddit / Qualified Health AI / Suno Design an Event-Driven Notification System System design Practice ๐Ÿ”ฅ Sep 26, 2026
LinkedIn / Airbyte / Zomato / Eternal Design an Ads Bidding, Pacing, and Forecast Platform System design Practice ๐Ÿ”ฅ Sep 26, 2026
Expedia / Agoda Design a Partner Data Aggregation and Query Service System design Practice ๐Ÿ”ฅ Sep 26, 2026
Accenture Nearest Composite Number Coding Practice ๐Ÿ”ฅ Sep 26, 2026
Goldman Sachs Dijkstra Shortest Paths in a Weighted Undirected Graph Coding Practice ๐Ÿ”ฅ Sep 26, 2026
Goldman Sachs Longest Palindromic Subsequence Coding Practice ๐Ÿ”ฅ Sep 26, 2026
Goldman Sachs Meeting Rooms Coding Practice ๐Ÿ”ฅ Sep 26, 2026
Goldman Sachs Merge Overlapping Intervals Coding Practice ๐Ÿ”ฅ Sep 26, 2026
Goldman Sachs Subset Sum to Target Coding Practice ๐Ÿ”ฅ Sep 26, 2026
Goldman Sachs Trapping Rain Water Coding Practice ๐Ÿ”ฅ Sep 26, 2026
TikTok Count Subarrays Matching a Comparison Pattern Coding Practice ๐Ÿ”ฅ Sep 25, 2026
TikTok Partition Matrix by Nonnegative Averages Coding Practice ๐Ÿ”ฅ Sep 25, 2026
TikTok Count Subarrays with at Least K Equal-Fruit Pairs Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Ramp Convert Snake Case Variables to Camel Case Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Character.AI Spreadsheet With Dependent Cells Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Clay Hierarchical In-Memory File System Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Clay Workspace File System With Folders and Tables Coding Practice ๐Ÿ”ฅ Sep 25, 2026
LiveKit AI Support Agent with Guarded Refunds System design Practice ๐Ÿ”ฅ Sep 25, 2026
Alpaca Large-Scale Messaging Application System design Practice ๐Ÿ”ฅ Sep 25, 2026
Hudson River Trading Sort Matrix Borders Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Hudson River Trading Rearrange String by Alternating Ends Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Hudson River Trading Rectangle Fit Queries Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Hudson River Trading Round-Robin WDL Order Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Visa Distinct Chapters Missed During a Cyclic Absence Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Visa Minimum Values with Even Powers of Two Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Visa Maximum Non-Decreasing Array Length Coding Practice ๐Ÿ”ฅ Sep 25, 2026
TikTok Lowest Number in an Open Range Coding Practice ๐Ÿ”ฅ Sep 25, 2026
TikTok Count One-Swap Number Pairs Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Meta / Amazon Design Real-Time Chatbot Training and Evaluation System design Practice ๐Ÿ”ฅ Sep 25, 2026
Amazon Group-Relative Policy Advantages Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Amazon Grouped-Query Attention with a KV Cache Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Mercor Minimum Friend API Calls Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Mercor Park Train Cars by Preference Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Strava Climb Detection with Recoverable Dips Coding Practice ๐Ÿ”ฅ Sep 25, 2026
UiPath New 21 Game Probability Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Mercor / Salesforce / Nuro / Rippling Design a Durable Work Orchestration Platform System design Practice ๐Ÿ”ฅ Sep 25, 2026
Micro1 / Amazon Design an In-Memory Action Rate Limiter Low-level design Practice ๐Ÿ”ฅ Sep 25, 2026
OpenAI Design In-Store Merchant Payment Reconciliation System design Practice ๐Ÿ”ฅ Sep 25, 2026
Amazon / Omnissa / Deloitte Design an Extensible Multi-Channel Alerting Platform Low-level design Practice ๐Ÿ”ฅ Sep 25, 2026
Zscaler / Amazon / Walmart / Stripe / ByteDance / Bloomberg LP Design a Global Service Metrics Monitoring and Alerting Platform System design Practice ๐Ÿ”ฅ Sep 25, 2026
PayPay / Fox Corporation Design a Payment Transaction State Machine Low-level design Practice ๐Ÿ”ฅ Sep 25, 2026
Zomato / Eternal / Amazon / Tekion / Motive / Capgemini Design an Online Ordering Platform System design Practice ๐Ÿ”ฅ Sep 25, 2026
Salesforce / The Trade Desk Design an Elevator Control System Low-level design Practice ๐Ÿ”ฅ Sep 25, 2026
Goldman Sachs / Meesho Design a Brokerage Order Processing Domain Low-level design Practice ๐Ÿ”ฅ Sep 25, 2026
Capgemini Design a Job Application Portal System design Practice ๐Ÿ”ฅ Sep 25, 2026
Capgemini Design a Learning Management Platform System design Practice ๐Ÿ”ฅ Sep 25, 2026
Bloomberg LP Currency Conversion Rate Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Agoda Shortest Subarray With the Full Degree Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Agoda Disk Space Window Analyzer Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Bloomberg LP Running Stream Aggregates Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Capgemini Contains Duplicate Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Capgemini Detect a Linked-List Cycle Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Capgemini Longest Substring Without Repeating Characters Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Capgemini Merge Overlapping Intervals Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Capgemini Merge Two Sorted Arrays Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Capgemini Product of Array Except Self Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Capgemini Search in Rotated Sorted Array Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Capgemini Top K Frequent Elements Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Fox Corporation Merge Overlapping Intervals Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Fox Corporation S-Shaped Matrix Traversal Coding Practice ๐Ÿ”ฅ Sep 25, 2026
JP Morgan Chase Maximize Minimum Deployment Difficulty Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Kaseya Best Stock Profit With a Sell Fee Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Moveworks Underline Shortest Unique Substrings Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Odoo Same Binary Tree Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Salesforce Construct a Tree from Level-Order and Inorder Traversals Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Salesforce Maximize Monsters Defeated Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Zomato / Eternal Friend Circles and Redundant Connections Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Groww Design a Good-Till-Trade Order Service System design Practice ๐Ÿ”ฅ Sep 25, 2026
Fox Corporation Design Payment-Gateway Outage Alerting System design Practice ๐Ÿ”ฅ Sep 25, 2026
Moveworks Design Read-Only Review Keyword Search System design Practice ๐Ÿ”ฅ Sep 25, 2026
Salesforce Design Movie Subscription Pricing Low-level design Practice ๐Ÿ”ฅ Sep 25, 2026
Eightfold Design Recurring Meeting-Room Booking Low-level design Practice ๐Ÿ”ฅ Sep 25, 2026
Odoo Build FIFO Inventory Costing AI coding Practice ๐Ÿ”ฅ Sep 25, 2026
Groww Build an Extensible Brokerage Charge Calculator AI coding Practice ๐Ÿ”ฅ Sep 25, 2026
Microsoft Grid Paths with Override Passes Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Microsoft Weighted LFU Cache Coding Practice ๐Ÿ”ฅ Sep 25, 2026
Walmart House Robber Coding Practice ๐Ÿ”ฅ Sep 24, 2026
FalconX Longest Low-Slippage Execution Window Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Capital One Distinct Values on Maximum-Sum Frames Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Capital One Wait Until the Next Bus Coding Practice ๐Ÿ”ฅ Sep 24, 2026
OpenAI GPU Credit Ledger with a Negative-Balance Failure State Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Visa Longest Increasing Path in a Matrix Coding Practice ๐Ÿ”ฅ Sep 24, 2026
DoorDash Simulate an Idempotent Refund Service Flow Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Oracle Merge One List Between Two Positions Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Oracle TTL Cache Operations Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Reddit Filter Undesired Comments and Their Descendants Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Meta Multi-Head Attention Forward Pass Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Oracle Valid Parentheses Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Oracle Valid Parenthesis String Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Pylon Render SQL with a Query Builder Coding Practice ๐Ÿ”ฅ Sep 24, 2026
OpenAI Evaluate Noisy Annotators Coding Practice ๐Ÿ”ฅ Sep 24, 2026
OpenAI One-Nearest-Neighbor Classification with Manhattan Distance Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Airbnb Task Management System Coding Practice ๐Ÿ”ฅ Sep 24, 2026
New Relic Basic String Compression with Length Guard Coding Practice ๐Ÿ”ฅ Sep 24, 2026
New Relic Longest Increasing Path in a Matrix Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Microsoft Count Digit Replacements with No Equal Adjacent Digits Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Microsoft Maximize Pipeline Throughput Under a Scaling Budget Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Visa Top Mutual-Friend Recommendations Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Visa Minimum Power-of-Two Removal Operations Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Visa Optimal Transfer Coding Practice ๐Ÿ”ฅ Sep 24, 2026
JP Morgan Chase Same Substring Within Budget Coding Practice ๐Ÿ”ฅ Sep 24, 2026
JP Morgan Chase Minimum Digit Changes Between String Halves Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Intuit Amend a Git Commit from Bash AI coding Practice ๐Ÿ”ฅ Sep 24, 2026
Amazon / The Trade Desk / Tekion Design an In-Memory Publish-Subscribe Library Low-level design Practice ๐Ÿ”ฅ Sep 24, 2026
Citadel / ByteDance / Microsoft / Walmart / ZipRecruiter Design an Authenticated Shopping Platform System design Practice ๐Ÿ”ฅ Sep 24, 2026
Amazon / Goldman Sachs / Wayfair / Walmart Design a Multi-Floor Parking Lot Low-level design Practice ๐Ÿ”ฅ Sep 24, 2026
OpenAI Design a Cloud Coding Workspace System design Practice ๐Ÿ”ฅ Sep 24, 2026
New Relic Design Long-Running Trace Event Grouping System design Practice ๐Ÿ”ฅ Sep 24, 2026
OpenAI Design a Distributed Video Generation Platform System design Practice ๐Ÿ”ฅ Sep 24, 2026
Tesla Design an Electric-Vehicle Charging Platform System design Practice ๐Ÿ”ฅ Sep 24, 2026
Pinterest / Instacart / Amazon / Coupa Software / Visa Design an Inventory Management Service System design Practice ๐Ÿ”ฅ Sep 24, 2026
Reddit Design a Comment-Likelihood Prediction Platform System design Practice ๐Ÿ”ฅ Sep 24, 2026
Harvey Design a Long-Horizon Agent Training Environment Platform System design Practice ๐Ÿ”ฅ Sep 24, 2026
Tekion / Amazon / Oracle Design a Configurable Logging Framework Low-level design Practice ๐Ÿ”ฅ Sep 24, 2026
Airbnb Progressive Banking System Coding Practice ๐Ÿ”ฅ Sep 24, 2026
OpenAI Sparse Plant Infection Simulation Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Harvey Spreadsheet Formula Evaluator Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Capital One Sort Adjacent Pairs Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Capital One Count Subarrays Matching a Comparison Pattern Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Capital One Brightest Position on a Street Coding Practice ๐Ÿ”ฅ Sep 24, 2026
OpenAI Poker Deal and Hand-Winner Simulation Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Capital One Alternate String Ends Coding Practice ๐Ÿ”ฅ Sep 24, 2026
DoorDash / Robinhood / Snowflake / Postman / Figma / LinkedIn / Airbnb / Nextdoor / Decagon / Amazon / Cursor / Temporal / Sumo Logic / Zip Design a Scheduled Job Execution System System design Practice ๐Ÿ”ฅ Sep 24, 2026
SentinelOne / PhonePe Design a Thread-Safe Queryable Logger Library Low-level design Practice ๐Ÿ”ฅ Sep 24, 2026
Amazon Capacity To Ship Packages Within D Days Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Amazon Minimum Cost for Roads and Hospitals Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Amazon Select K Paired Indices for Maximum Score Coding Practice ๐Ÿ”ฅ Sep 24, 2026
GoodScore Counting Bits Coding Practice ๐Ÿ”ฅ Sep 24, 2026
GoodScore Minimum Jumps to Reach Home Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Groww Sliding Window Maximum Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Morgan Stanley Generate Strings of Length at Least Three Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Morgan Stanley Three-Resource 0/1 Knapsack Coding Practice ๐Ÿ”ฅ Sep 24, 2026
PhonePe Identify Two Failing Tests From an Oracle Transcript Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Amazon Get Minimum Amount Coding Practice ๐Ÿ”ฅ Sep 24, 2026
Salesforce Minimum Unique-Character Segments After Deletion Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Microsoft Copy File Bytes with Partial Writes Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Microsoft Longest Repeating Character Replacement Coding Practice ๐Ÿ”ฅ Sep 23, 2026
StackAdapt Build a Tree from Preorder and Inorder Traversals Coding Practice ๐Ÿ”ฅ Sep 23, 2026
StackAdapt Maximum Bananas Delivered by a Camel Coding Practice ๐Ÿ”ฅ Sep 23, 2026
StackAdapt Reservoir Sampling with Recorded Draws Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Vercel Order DAG Nodes from Leaves to Roots Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Amazon Minimum Edge Moves to Connect a Network Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Amazon Simplify a Binary Expression Tree Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Mercor Currency Conversion Rate Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Google Universal Exit Command Sequence Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Pinterest Shortest Pin Path Through Topics Coding Practice ๐Ÿ”ฅ Sep 23, 2026
LinkedIn Find the Intersection Node of Two Linked Lists Coding Practice ๐Ÿ”ฅ Sep 23, 2026
LinkedIn Permutations II Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Remitly Rebalance Bank Accounts to a Minimum Balance Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Circle Banking System with Pending Transfer Acceptance Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Apple Design Authentication Manager Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Ramp Retryable URL Maze Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Decagon Batch API Requests with Retry Delays Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Apple Unit Conversion Across Independent Families Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Google Best Anagram Match Coding Practice ๐Ÿ”ฅ Sep 23, 2026
ByteDance Tic-Tac-Toe Game Over Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Amazon Environment Variable Store and Substitution Coding Practice ๐Ÿ”ฅ Sep 23, 2026
NinjaTrader Server Log Summary and Minute Anomalies Coding Practice ๐Ÿ”ฅ Sep 23, 2026
eBay Maximum Size Subarray Sum Equals K Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Netflix Capacity-Limited Timed Cache Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Amazon / Postman Social News Feed With Live Engagement System design Practice ๐Ÿ”ฅ Sep 23, 2026
Amazon / Groww Design and Implement a Shopping Cart Price Calculator Low-level design Practice ๐Ÿ”ฅ Sep 23, 2026
Apple / OneTrust Design an Analytical Data Dashboard System design Practice ๐Ÿ”ฅ Sep 23, 2026
Globalization Partners / Coupa Software Design and Repair a Thread-Safe Configuration Singleton Low-level design Practice ๐Ÿ”ฅ Sep 23, 2026
ByteDance / Groww Design an Event Booking and Analytics Platform System design Practice ๐Ÿ”ฅ Sep 23, 2026
Coupa Software Design and Implement an Immutable Customer Profile Low-level design Practice ๐Ÿ”ฅ Sep 23, 2026
Visa Total Server Downtime Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Microsoft Maximum Escape Game Score Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Microsoft K Most Recent Unique Request IDs Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Superhuman Longest Distinct String Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Superhuman Minimum Time on Two Processors Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Superhuman Top Mutual-Friend Recommendations Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Visa Longest String Chain Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Visa Maximum Three-Server Difficulty Score Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Visa Minimize Malware Spread by Removing a Node Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Microsoft Nearby Restaurant Search Service System design Practice ๐Ÿ”ฅ Sep 23, 2026
Scribd / PostHog / Vanta / Attentive Design a Product Feature Event Analytics Platform System design Practice ๐Ÿ”ฅ Sep 23, 2026
Microsoft Design a Desktop Application Notification System System design Practice ๐Ÿ”ฅ Sep 23, 2026
Google Design a Smile-Detection Evaluation Platform System design Practice ๐Ÿ”ฅ Sep 23, 2026
Abnormal Security / Apple Evolve a Read-Write Record Service System design Practice ๐Ÿ”ฅ Sep 23, 2026
Pinterest Design a Feedback-Aware Cluster Workload Scheduler System design Practice ๐Ÿ”ฅ Sep 23, 2026
Amazon Design a Large-Model Inference Serving Platform System design Practice ๐Ÿ”ฅ Sep 23, 2026
Atlassian Design a Searchable Emoji Picker System design Practice ๐Ÿ”ฅ Sep 23, 2026
Amazon Design a Pizza Ordering Domain Low-level design Practice ๐Ÿ”ฅ Sep 23, 2026
Instacart Evaluate Formulas with Cycle Detection Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Instacart Product Total With the Cheapest Promotion Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Instacart Process Shopping Records, Promotions, and Display Order Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Optiver Power Cell Bank Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Perplexity AI In-Memory Filesystem Commands Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Instacart Sort Products by Aisle With Frozen Items Last Coding Practice ๐Ÿ”ฅ Sep 23, 2026
Harvey Design Human-Governed File Review Agents System design Practice ๐Ÿ”ฅ Sep 22, 2026
Anthropic / Snap Inc. / Lyft / Fivetran / Temporal One-to-One Chat Service System design Practice ๐Ÿ”ฅ Sep 22, 2026
PayPay Design a Coupon Generation and Redemption Service System design Practice ๐Ÿ”ฅ Sep 22, 2026
Postman Design an API Request Workspace System design Practice ๐Ÿ”ฅ Sep 22, 2026
Mercor Design Context Window Management for an AI Assistant System design Practice ๐Ÿ”ฅ Sep 22, 2026
Snowflake Design Memory for an AI Assistant System design Practice ๐Ÿ”ฅ Sep 22, 2026
Mercor Design Prompt Injection Defenses for an AI Agent System design Practice ๐Ÿ”ฅ Sep 22, 2026
PayPay Design a Pluggable Random Value Library Low-level design Practice ๐Ÿ”ฅ Sep 22, 2026
Verkada Build a Camera Communication API AI coding Practice ๐Ÿ”ฅ Sep 22, 2026
Cresta Build a Conversational Flight Booking Agent AI coding Practice ๐Ÿ”ฅ Sep 22, 2026
Intuit Oldest and Youngest Employees SQL Practice ๐Ÿ”ฅ Sep 22, 2026
Intuit Pressure-Isolation Shutdown Order Coding Practice ๐Ÿ”ฅ Sep 22, 2026
Intuit Submask Sum Queries Coding Practice ๐Ÿ”ฅ Sep 22, 2026
Google Minimize Absolute Difference of Server Loads Coding Practice ๐Ÿ”ฅ Sep 22, 2026
Google Decreasing Subsequences Coding Practice ๐Ÿ”ฅ Sep 22, 2026
Hudson River Trading Product Minus Sum of Digits Coding Practice ๐Ÿ”ฅ Sep 22, 2026
Hudson River Trading Rightmost Longest Character Run Coding Practice ๐Ÿ”ฅ Sep 22, 2026
Hudson River Trading Dynamic Sum Pair Queries Coding Practice ๐Ÿ”ฅ Sep 22, 2026
Cursor Filesystem Hash Tree Coding Practice ๐Ÿ”ฅ Sep 22, 2026
Amazon Path Through an O/X Grid Using Only Right and Down Coding Practice ๐Ÿ”ฅ Sep 22, 2026
Capital One Count One-Swap Number Pairs Coding Practice ๐Ÿ”ฅ Sep 22, 2026
Cursor Diff Two Filesystem Hash Trees Coding Practice ๐Ÿ”ฅ Sep 22, 2026
Ease Linear-Probing Key-Value Store Coding Practice ๐Ÿ”ฅ Sep 22, 2026
Fivetran Execute In-Memory SQL Storage Operations Coding Practice ๐Ÿ”ฅ Sep 22, 2026
Google Most Active Caller by Distinct Contacts Coding Practice ๐Ÿ”ฅ Sep 22, 2026
Google Top K Users by Distinct Contacts Coding Practice ๐Ÿ”ฅ Sep 22, 2026
Harvey Retrieve Vectors by Cosine Similarity Coding Practice ๐Ÿ”ฅ Sep 22, 2026
Mercor Process Refunds with Bounded Retries Coding Practice ๐Ÿ”ฅ Sep 22, 2026
Netflix Convert Sparse Records to a Filled Table Coding Practice ๐Ÿ”ฅ Sep 22, 2026
Netflix Sparse Matrix Multiplication Coding Practice ๐Ÿ”ฅ Sep 22, 2026
OpenAI Iterate Canonical IPv6 Addresses Coding Practice ๐Ÿ”ฅ Sep 22, 2026
Physical Intelligence LRU Cache Operations Coding Practice ๐Ÿ”ฅ Sep 22, 2026
Snowflake Sliding-Window Rate Limiter Coding Practice ๐Ÿ”ฅ Sep 22, 2026
Stripe Validate Six-Column Business CSV Rows Coding Practice ๐Ÿ”ฅ Sep 22, 2026
Visa Shortest Digit Prefix for Target Multisets Coding Practice ๐Ÿ”ฅ Sep 22, 2026
Pinterest / Slack / Motive Design a Typeahead Suggestion Service System design Practice ๐Ÿ”ฅ Sep 21, 2026
JP Morgan Chase / Google / Decagon Internal AI Assistant for Employees System design Practice ๐Ÿ”ฅ Sep 21, 2026
Tesla Monorepo Build and Vehicle Software Rollout System design Practice ๐Ÿ”ฅ Sep 21, 2026
Pinterest Implement a Product Read-Through Cache AI coding Practice ๐Ÿ”ฅ Sep 21, 2026
Abnormal Security / Ninja Van Concurrent Worker Processing Platform System design Practice ๐Ÿ”ฅ Sep 21, 2026
Pinterest In-Memory Typeahead Trie Service System design Practice ๐Ÿ”ฅ Sep 21, 2026
Tekion Design and Implement a TTL Cache Library Low-level design Practice ๐Ÿ”ฅ Sep 21, 2026
Amazon Edit Distance Coding Practice ๐Ÿ”ฅ Sep 21, 2026
Amazon Word Ladder Coding Practice ๐Ÿ”ฅ Sep 21, 2026
Amazon Trapping Rain Water Coding Practice ๐Ÿ”ฅ Sep 21, 2026
Amazon Allocate Minimum Pages Coding Practice ๐Ÿ”ฅ Sep 21, 2026
Amazon Longest Subarray with K Distinct Values Coding Practice ๐Ÿ”ฅ Sep 21, 2026
Tekion Largest Rectangle in Histogram Coding Practice ๐Ÿ”ฅ Sep 21, 2026
Tekion Next Greater Element to the Right Coding Practice ๐Ÿ”ฅ Sep 21, 2026
Visa Sum of Index-Ordered Pair Differences Coding Practice ๐Ÿ”ฅ Sep 21, 2026
Tesla Flatten a Branched List into a Doubly Linked List Coding Practice ๐Ÿ”ฅ Sep 21, 2026
Oscar Health Longest Name Chain in a Directed Acyclic Graph Coding Practice ๐Ÿ”ฅ Sep 21, 2026
OpenAI GPU Credit Ledger Coding Practice ๐Ÿ”ฅ Sep 21, 2026
Cresta Dynamic Least-Loaded Job Dispatcher Coding Practice ๐Ÿ”ฅ Sep 21, 2026
Decagon Versioned Recipe Shopping Cart Coding Practice ๐Ÿ”ฅ Sep 21, 2026
OpenAI Determine the Winner of Three-Card Hands Coding Practice ๐Ÿ”ฅ Sep 21, 2026
Apple First Successful Concurrent API Result Before a Timeout Coding Practice ๐Ÿ”ฅ Sep 21, 2026
Waymo Vehicle Maintenance Event Readiness Coding Practice ๐Ÿ”ฅ Sep 21, 2026
Pinterest Shortest Way to Form a Target String Coding Practice ๐Ÿ”ฅ Sep 21, 2026
Pinterest Escape Room Leaderboard Coding Practice ๐Ÿ”ฅ Sep 21, 2026
Pinterest Policy Violation Set Checks Coding Practice ๐Ÿ”ฅ Sep 21, 2026
Affirm Assign Sequential Loan Identifiers Coding Practice ๐Ÿ”ฅ Sep 21, 2026
Affirm Normalize Loan Merchants to Root Businesses Coding Practice ๐Ÿ”ฅ Sep 21, 2026
Mercury Sliding Window Rate Limiter Coding Practice ๐Ÿ”ฅ Sep 20, 2026
Amazon / Meta / ByteDance / Harvey / Clio / Microsoft Design a Cloud File Storage System System design Practice ๐Ÿ”ฅ Sep 20, 2026
Harvey / Nike, Inc. / GEP / Microsoft Grounded Document-Vault Question Answering System design Practice ๐Ÿ”ฅ Sep 20, 2026
Google Offline Multi-Device Data Sync System design Practice ๐Ÿ”ฅ Sep 20, 2026
Amazon Repair MovieDB Follows and Notifications AI coding Practice ๐Ÿ”ฅ Sep 20, 2026
Google Count Score Categories Coding Practice ๐Ÿ”ฅ Sep 20, 2026
Google Book Reading Evenings Coding Practice ๐Ÿ”ฅ Sep 20, 2026
Capital One Obstacle Placement Queries Coding Practice ๐Ÿ”ฅ Sep 20, 2026
Google Minimum Number of Chairs Coding Practice ๐Ÿ”ฅ Sep 20, 2026
Harvey Highlight and Rank Overlapping Citations Coding Practice ๐Ÿ”ฅ Sep 20, 2026
BlackRock Lowest Common Ancestor in a Parent Tree Coding Practice ๐Ÿ”ฅ Sep 20, 2026
BlackRock Valid Parentheses Coding Practice ๐Ÿ”ฅ Sep 20, 2026
Capital One Circular High-Low Pattern Coding Practice ๐Ÿ”ฅ Sep 20, 2026
Capital One Find a Symbolic Matrix Pattern Coding Practice ๐Ÿ”ฅ Sep 20, 2026
Citadel Merge Price-Delta Feeds Coding Practice ๐Ÿ”ฅ Sep 20, 2026
Harvey Evaluate an Expression Map Coding Practice ๐Ÿ”ฅ Sep 20, 2026
Harvey Find Duplicate Files in a Filesystem Coding Practice ๐Ÿ”ฅ Sep 20, 2026
Harvey Highlight Matching Phrases Coding Practice ๐Ÿ”ฅ Sep 20, 2026
Harvey In-Memory Vault File System Coding Practice ๐Ÿ”ฅ Sep 20, 2026
Rippling Numeric Poker Operations Coding Practice ๐Ÿ”ฅ Sep 20, 2026
Snap Inc. Render an Org Chart and Find Skip-Level Pairs Coding Practice ๐Ÿ”ฅ Sep 20, 2026
Kotak Mahindra Bank Course Schedule Coding Practice ๐Ÿ”ฅ Sep 20, 2026
Kotak Mahindra Bank House Robber II Coding Practice ๐Ÿ”ฅ Sep 20, 2026
Kotak Mahindra Bank Trapping Rain Water Coding Practice ๐Ÿ”ฅ Sep 20, 2026
LinkedIn Inverse-Depth Nested List Sum Coding Practice ๐Ÿ”ฅ Sep 20, 2026
GoodScore Design and Implement a Thread-Safe In-Memory Task Queue Low-level design Practice ๐Ÿ”ฅ Sep 19, 2026
GoodScore Count Divisible Power Sums Coding Practice ๐Ÿ”ฅ Sep 19, 2026
Stripe Incident Monitor Coding Practice ๐Ÿ”ฅ Sep 19, 2026
Databricks Chat API and Database System System design Practice ๐Ÿ”ฅ Sep 19, 2026
Microsoft AI Receptionist Voice Chat System design Practice ๐Ÿ”ฅ Sep 19, 2026
Airbnb Customer Support Resolution Assistant System design Practice ๐Ÿ”ฅ Sep 19, 2026
Walleye Capital Equity Research Decision Intelligence System design Practice ๐Ÿ”ฅ Sep 19, 2026
Microsoft Global One-to-One Voice Calling System design Practice ๐Ÿ”ฅ Sep 19, 2026
Atlassian Social Post Comments System design Practice ๐Ÿ”ฅ Sep 19, 2026
Airbnb Vacation Rental Candidate Ranking System design Practice ๐Ÿ”ฅ Sep 19, 2026
Capital One Rank Flights by Airline and Destination Frequency SQL Practice ๐Ÿ”ฅ Sep 19, 2026
Hudson River Trading Sorted Absolute-Difference Sums Across Cyclic Shifts Coding Practice ๐Ÿ”ฅ Sep 19, 2026
Hudson River Trading Minimize Expression Value with Parentheses Coding Practice ๐Ÿ”ฅ Sep 19, 2026
Hudson River Trading Obstacle Placement Queries Coding Practice ๐Ÿ”ฅ Sep 19, 2026
Amazon Maximize Adjacent Difference With One Reversal Coding Practice ๐Ÿ”ฅ Sep 19, 2026
Amazon Shortest Grid Path With One Wall Break Coding Practice ๐Ÿ”ฅ Sep 19, 2026
Databricks Rectangular K-in-a-Row Coding Practice ๐Ÿ”ฅ Sep 19, 2026
Airbnb Print Sentences as Table Coding Practice ๐Ÿ”ฅ Sep 19, 2026
Atlassian Music Player Operation Sequence Coding Practice ๐Ÿ”ฅ Sep 19, 2026
Databricks Customer Revenue with Direct Referrals Coding Practice ๐Ÿ”ฅ Sep 19, 2026
Indeed Insert into an Unrolled Linked List Coding Practice ๐Ÿ”ฅ Sep 19, 2026
Microsoft First Duplicate Value Coding Practice ๐Ÿ”ฅ Sep 19, 2026
Microsoft Keyed Bounded Executor Schedule Coding Practice ๐Ÿ”ฅ Sep 19, 2026
Microsoft 3Sum Coding Practice ๐Ÿ”ฅ Sep 19, 2026
Oracle Island Count and Maximum Area Coding Practice ๐Ÿ”ฅ Sep 19, 2026
Oracle Retry with an Attempt Limit Coding Practice ๐Ÿ”ฅ Sep 19, 2026
Tata Consultancy Services Maximum Gap After Sorting Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Tata Consultancy Services EV Charging Cost Optimization Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Amazon Inventory Allocation Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Waymo Obstacle-Aware Return to Origin Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Waymo Dictionary Matches from Repeated Letters Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Amazon Design File-System Search with Symlink Safety Low-level design Practice ๐Ÿ”ฅ Sep 18, 2026
Amazon Design a Large-Scale File Change Watcher System design Practice ๐Ÿ”ฅ Sep 18, 2026
Amazon Design Robot-Assisted Restaurant Orchestration System design Practice ๐Ÿ”ฅ Sep 18, 2026
Amazon LRU Cache for Query Results Coding Practice ๐Ÿ”ฅ Sep 18, 2026
AMD K Largest Elements with Quickselect Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Google Sliding Window Average Excluding the Largest K Values Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Instacart Timed Task Management Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Instacart Worker Management with Promotions and Double-Paid Time Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Microsoft Convert Hexadecimal to Dotted IPv4 Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Microsoft Parse a Signed Integer in Any Base Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Microsoft Reconstruct Digits from Jumbled English Words Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Microsoft Stable Unique Column Renames Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Reddit Straight-Line Word Search Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Render Top-K IP Addresses Across Log Files Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Robinhood Fractional Share Inventory Flattening Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Robinhood Unique Transitive Dependent Counts Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Roblox Candy Crush Grid Matching and Gravity Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Roblox Count and Score Distinct Hat Assignments Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Snowflake Connect Four from the Last Move Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Together AI Balanced File Partitions Without Splitting Lines Coding Practice ๐Ÿ”ฅ Sep 18, 2026
The Voleon Group Words with Repeated Anagrams Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Wayfair UCB1 Multi-Armed Bandit Trace Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Amazon Course Order and Cycle Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Rippling Corporate Card Expense Rules Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Amazon Design an Employee Directory and Organization Hierarchy System design Practice ๐Ÿ”ฅ Sep 18, 2026
JioStar Design Streaming Home Personalization System design Practice ๐Ÿ”ฅ Sep 18, 2026
JioStar Design and Implement a Parameterized Configuration Library Low-level design Practice ๐Ÿ”ฅ Sep 18, 2026
Amazon Minimum Stick Connection Cost Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Capital One Format a Newspaper Page Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Capital One Compare Counts Around Pivot Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Capital One Reconstruct Landmark Journey Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Capital One Linear Warehouse Drone Delivery Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Two Sigma Sewer Drainage Partition Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Uber Large Structured Data Filesystem System design Practice ๐Ÿ”ฅ Sep 18, 2026
Intuit Longest Uninterrupted Work Block Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Uber Shortest Increasing Path to a Target Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Uber Zigzag Board Adjacent Swaps Coding Practice ๐Ÿ”ฅ Sep 18, 2026
IBM Customer Resource Usage Analysis SQL Practice ๐Ÿ”ฅ Sep 18, 2026
IBM Tool Changer Coding Practice ๐Ÿ”ฅ Sep 18, 2026
Unattributed Filter and Batch Concurrent Logs AI coding Practice ๐Ÿ”ฅ Sep 17, 2026
Citadel Top Ten Trades by Notional Value Coding Practice ๐Ÿ”ฅ Sep 17, 2026
Citadel Reconcile Unmatched Trades with Timestamp Tolerance Coding Practice ๐Ÿ”ฅ Sep 17, 2026
Uber First Unique IP Hitting the Server Coding Practice ๐Ÿ”ฅ Sep 17, 2026
Microsoft Design Distributed LLM Embedding and Output Sharding System design Practice ๐Ÿ”ฅ Sep 17, 2026
Postman / Uber Freight / LinkedIn Design a Calendar Event Collaboration System System design Practice ๐Ÿ”ฅ Sep 17, 2026
Amazon / Airwallex / Apple / Wex / Confluent / Oracle / Motive / Grab Design a Ticket Booking System System design Practice ๐Ÿ”ฅ Sep 17, 2026
Confluent / Oracle Design a Durable Disposable Email Service System design Practice ๐Ÿ”ฅ Sep 17, 2026
Susquehanna International Group (SIG) Leftmost Memory Block Allocator Coding Practice ๐Ÿ”ฅ Sep 17, 2026
Susquehanna International Group (SIG) Sort Matrix Borders Coding Practice ๐Ÿ”ฅ Sep 17, 2026
Fox Corporation Design a Model-Version-Aware Derived-Data Cache System design Practice ๐Ÿ”ฅ Sep 17, 2026
Oracle Design Data-Loss Prevention and Recovery for a Distributed Store System design Practice ๐Ÿ”ฅ Sep 17, 2026
Oracle Design Stable API and Database Pagination System design Practice ๐Ÿ”ฅ Sep 17, 2026
Kotak Mahindra Bank Design a Food Delivery Order Domain Low-level design Practice ๐Ÿ”ฅ Sep 17, 2026
Kotak Mahindra Bank Design a Showroom Vehicle Booking and Loan Workflow Low-level design Practice ๐Ÿ”ฅ Sep 17, 2026
Fox Corporation Design and Implement a Structured Content Query Library Low-level design Practice ๐Ÿ”ฅ Sep 17, 2026
LinkedIn Binary Tree Zigzag Level Order Traversal Coding Practice ๐Ÿ”ฅ Sep 17, 2026
LinkedIn LRU Cache with Hit and Miss Counters Coding Practice ๐Ÿ”ฅ Sep 17, 2026
LinkedIn Max Points on a Line Coding Practice ๐Ÿ”ฅ Sep 17, 2026
LinkedIn Maximum Depth of Binary Tree Coding Practice ๐Ÿ”ฅ Sep 17, 2026
Stripe Rule-Driven Transaction Fraud Detection Coding Practice ๐Ÿ”ฅ Sep 17, 2026
Applied Intuition Compilation Order with Topological Sort Coding Practice ๐Ÿ”ฅ Sep 17, 2026
LinkedIn Minimum Window Substring Coding Practice ๐Ÿ”ฅ Sep 17, 2026
Meta Values Exclusive to the Current User Coding Practice ๐Ÿ”ฅ Sep 17, 2026
Plaid Validate and Resolve Evaluation Chains Coding Practice ๐Ÿ”ฅ Sep 17, 2026
Plaid Total Pipeline Completion Time Coding Practice ๐Ÿ”ฅ Sep 17, 2026
Snowflake Minimum Bus Fleet Across Stations Coding Practice ๐Ÿ”ฅ Sep 17, 2026
SpaceX Timestamped Telemetry Stream Differences Coding Practice ๐Ÿ”ฅ Sep 17, 2026
Together AI Time-Indexed Key-Value Store Coding Practice ๐Ÿ”ฅ Sep 17, 2026
Waymo Cyclic Fuel Command Simulation Coding Practice ๐Ÿ”ฅ Sep 17, 2026
Zip Maximum Survival Time in a Graph Pursuit Coding Practice ๐Ÿ”ฅ Sep 17, 2026
Zip Cache Ticket Alerts for Approval AI coding Practice ๐Ÿ†• Sep 16, 2026
IBM Repair Event Pre-Save Validation AI coding Practice ๐Ÿ†• Sep 16, 2026
Tesla Swap Even and Odd Bits Coding Practice ๐Ÿ†• Sep 16, 2026
Stripe Split Tender Transactions Part 1 - Basic Split Tendering Coding Practice ๐Ÿ†• Sep 16, 2026
Anthropic Design a Communication-Efficient Distributed Median Aggregation System design Practice ๐Ÿ†• Sep 16, 2026
Anthropic Design a Communication-Efficient Distributed Mode Aggregation System design Practice ๐Ÿ†• Sep 16, 2026
DoorDash Build a Refund DAG with Local HTTP Services AI coding Practice ๐Ÿ†• Sep 16, 2026
DoorDash Debug Two Routing Strategies AI coding Practice ๐Ÿ†• Sep 16, 2026
DoorDash Integrate Three Profile Services AI coding Practice ๐Ÿ†• Sep 16, 2026
Gatik AI Design a Configurable Point-Cloud Transformation Pipeline Low-level design Practice ๐Ÿ†• Sep 16, 2026
Airbnb Design a Booking-Lifecycle Metrics Model System design Practice ๐Ÿ†• Sep 16, 2026
Amazon Design a Music Click-Through Prediction Platform System design Practice ๐Ÿ†• Sep 16, 2026
Latent Design a Prior-Authorization Worklist and Digest System design Practice ๐Ÿ†• Sep 16, 2026
ByteDance Design Multi-Tenant Agent Quota Accounting System design Practice ๐Ÿ†• Sep 16, 2026
LinkedIn Malicious IP Traffic Filtering Platform System design Practice ๐Ÿ†• Sep 16, 2026
OpenAI / Baseten / Amazon Design a Stateless Generative AI Chat Service System design Practice ๐Ÿ†• Sep 16, 2026
IBM Minimum Additions to Make a Valid ABC String Coding Practice ๐Ÿ†• Sep 16, 2026
IBM Social Network Relationship Statistics SQL Practice ๐Ÿ†• Sep 16, 2026
Salesforce Design Coffee-Shop Ordering and Fulfillment System design Practice ๐Ÿ†• Sep 16, 2026
Amazon / Goldman Sachs / Salesforce / Harness Design an In-Memory Job Scheduler Low-level design Practice ๐Ÿ†• Sep 16, 2026
Netflix / Amazon Design a Parking Lot with Flexible Fees Low-level design Practice ๐Ÿ†• Sep 16, 2026
Amazon Design a Continental Temperature Heatmap System design Practice ๐Ÿ†• Sep 16, 2026
DocuSign Design a Live Location Tracking Service System design Practice ๐Ÿ†• Sep 16, 2026
ThoughtSpot Design a Priority-Aware Database Request Gateway System design Practice ๐Ÿ†• Sep 16, 2026
DocuSign Design a Resilient E-Commerce Checkout System design Practice ๐Ÿ†• Sep 16, 2026
Rubrik Design Cross-Region Versioned Map Reconciliation System design Practice ๐Ÿ†• Sep 16, 2026
Harness Design Rolling Top-N Movie Recommendations System design Practice ๐Ÿ†• Sep 16, 2026
Rubrik Design a Thread-Safe One-Dimensional Parking Lot Low-level design Practice ๐Ÿ†• Sep 16, 2026
Walmart Repair Movie Watchlist Synchronization AI coding Practice ๐Ÿ†• Sep 16, 2026
Robinhood Top Ten Most Frequent Words in a Book Coding Practice ๐Ÿ†• Sep 16, 2026
Salesforce LFU Cache Coding Practice ๐Ÿ†• Sep 16, 2026
DoorDash Random Dasher Set Operations Coding Practice ๐Ÿ†• Sep 16, 2026
Salesforce Run-Length String Compression Coding Practice ๐Ÿ†• Sep 16, 2026
Anthropic Profiling Events from Consecutive Stack Samples Coding Practice ๐Ÿ†• Sep 16, 2026
Pinterest Time-Ordered Elevator Dispatch Coding Practice ๐Ÿ†• Sep 16, 2026
Agoda Count Values Appearing Exactly Once Coding Practice ๐Ÿ†• Sep 16, 2026
Agoda Longest All-Present Attendance Streak Coding Practice ๐Ÿ†• Sep 16, 2026
Airbnb Median Home Price by City Coding Practice ๐Ÿ†• Sep 16, 2026
Airbnb Superhost Eligibility Coding Practice ๐Ÿ†• Sep 16, 2026
Anthropic Confirmed Profiling Events with First-Observed Starts Coding Practice ๐Ÿ†• Sep 16, 2026
Anthropic Convert Stack Samples to Trace Events Coding Practice ๐Ÿ†• Sep 16, 2026
Apple Canonical N-Ary Tree Codec Coding Practice ๐Ÿ†• Sep 16, 2026
Apple Implement Hit Counter Coding Practice ๐Ÿ†• Sep 16, 2026
Decagon Rolling CSAT Tracker Coding Practice ๐Ÿ†• Sep 16, 2026
Google Trim a Binary Search Tree to a Range Coding Practice ๐Ÿ†• Sep 16, 2026
LinkedIn Users with a Short Sign-In Session Coding Practice ๐Ÿ†• Sep 16, 2026
Meta First Bad Version in a Monotone Array Coding Practice ๐Ÿ†• Sep 16, 2026
Meta Parenthesized String Calculator Coding Practice ๐Ÿ†• Sep 16, 2026
Netflix Custom Record and Free-Form Field Parser Coding Practice ๐Ÿ†• Sep 16, 2026
Otter.ai Versioned Key-Value Store with Commits Coding Practice ๐Ÿ†• Sep 16, 2026
Pinterest Minimum Bus Routes to a Destination Coding Practice ๐Ÿ†• Sep 16, 2026
Pinterest Shortest Sequence of Source Subsequences Coding Practice ๐Ÿ†• Sep 16, 2026
Rippling Common Ancestors in a Directed Acyclic Graph Coding Practice ๐Ÿ†• Sep 16, 2026
Robinhood Friendship and Balance Tracker Coding Practice ๐Ÿ†• Sep 16, 2026
Robinhood Service Dependency Load Factors Coding Practice ๐Ÿ†• Sep 16, 2026
Salesforce Flatten Nested Map Paths with a Stack Coding Practice ๐Ÿ†• Sep 16, 2026
Siemens Padded Vector Batch Pipeline Coding Practice ๐Ÿ†• Sep 16, 2026
Squarepoint Capital Mutable Record Store with Error Results Coding Practice ๐Ÿ†• Sep 16, 2026
Stripe Monthly Latest-Balance Reconciliation Coding Practice ๐Ÿ†• Sep 16, 2026
Tesla Reduce-Based Map and Filter Pipeline Coding Practice ๐Ÿ†• Sep 16, 2026
Walmart Maximum Points by Deleting Elements Coding Practice ๐Ÿ†• Sep 16, 2026
Mercor Repair a Concurrent Read-Through Cache AI coding Practice ๐Ÿ†• Sep 15, 2026
Pinterest Design Merchant Product Catalog Ingestion System design Practice ๐Ÿ†• Sep 15, 2026
Hadrian / DigitalOcean Design a Live Relational Database Migration System design Practice ๐Ÿ†• Sep 15, 2026
Meta Design a Social Game Score Leaderboard System design Practice ๐Ÿ†• Sep 15, 2026
Amazon Repair Django Ticket Creation and Replies AI coding Practice ๐Ÿ†• Sep 15, 2026
Concentric AI Design an Institute Attendance Management Platform System design Practice ๐Ÿ†• Sep 15, 2026
Hudson River Trading Tiered Expiring Item Store Coding Practice ๐Ÿ†• Sep 15, 2026
Vercel Recent Metrics by Name and Tags Coding Practice ๐Ÿ†• Sep 15, 2026
Pinterest Nearest Eligible Elevator Coding Practice ๐Ÿ†• Sep 15, 2026
DigitalOcean Maximum Value from Circular Houses Coding Practice ๐Ÿ†• Sep 15, 2026
DigitalOcean Longest Repeating Character Replacement Coding Practice ๐Ÿ†• Sep 15, 2026
Meta Mutual-Friend Recommendations Coding Practice ๐Ÿ†• Sep 15, 2026
Meta Partition a Card Deck into Fifteens Coding Practice ๐Ÿ†• Sep 15, 2026
OpenAI Dependency-Aware Agent Task Scheduler Coding Practice ๐Ÿ†• Sep 15, 2026
OpenAI Durable Work Queue Operations Coding Practice ๐Ÿ†• Sep 15, 2026
Robinhood Transitive Employee Referral Counts Coding Practice ๐Ÿ†• Sep 15, 2026
Amazon Design Usage Billing for One Account Low-level design Practice ๐Ÿ†• Sep 14, 2026
Amazon Root-to-Leaf Paths with a Target Sum Coding Practice ๐Ÿ†• Sep 14, 2026
Amazon First Non-Repeating Character Coding Practice ๐Ÿ†• Sep 14, 2026
Unattributed Design and Implement a Concurrency-Safe Wallet Low-level design Practice ๐Ÿ†• Sep 14, 2026
Akuna Capital Count Server Replacements Coding Practice ๐Ÿ†• Sep 14, 2026
Akuna Capital Maximum Remaining Drone Power Coding Practice ๐Ÿ†• Sep 14, 2026
Two Sigma Online No-Intercept Linear Regression Coding Practice ๐Ÿ†• Sep 14, 2026
Two Sigma Linear Interpolator Coding Practice ๐Ÿ†• Sep 14, 2026
Two Sigma Daily Temperature By Town SQL Practice ๐Ÿ†• Sep 14, 2026
Akuna Capital Vowel Substring Game Coding Practice ๐Ÿ†• Sep 14, 2026
Rippling Filter, Sort, and Deduplicate Scheduled Tasks Coding Practice ๐Ÿ†• Sep 14, 2026
Goldman Sachs Design a Pastebin Text Sharing Service System design Practice ๐Ÿ†• Sep 14, 2026
OpenAI Payment Hold, Charge, and Settlement System design Practice ๐Ÿ†• Sep 14, 2026
Airwallex Design an Authoritative Grid Chase Game System design Practice ๐Ÿ†• Sep 14, 2026
Stripe Financial Account Ledger Coding Practice ๐Ÿ†• Sep 14, 2026
Goldman Sachs Staircase Search In A Sorted Matrix Coding Practice ๐Ÿ†• Sep 14, 2026
Goldman Sachs Insert, Delete, And Get Random In Constant Time Coding Practice ๐Ÿ†• Sep 14, 2026
Goldman Sachs Dungeon Health Coding Practice ๐Ÿ†• Sep 14, 2026
Goldman Sachs Least Recently Used Cache Coding Practice ๐Ÿ†• Sep 14, 2026
Vanta Implement uniq: Unique Lines Coding Practice ๐Ÿ†• Sep 14, 2026
Airwallex Paginated K-Way Unique Merge Coding Practice ๐Ÿ†• Sep 14, 2026
Applied Intuition Merge Overlapping Closed Intervals Coding Practice ๐Ÿ†• Sep 14, 2026
Citadel Exchange BBO and Market-Wide NBBO Coding Practice ๐Ÿ†• Sep 14, 2026
LinkedIn Restricted Decimal Number Validator Coding Practice ๐Ÿ†• Sep 14, 2026
LinkedIn Second Minimum in a Tournament Tree Coding Practice ๐Ÿ†• Sep 14, 2026
The Walt Disney Company Resizable Array-Backed Integer Set Coding Practice ๐Ÿ†• Sep 14, 2026
Rippling Design a Personalized News Aggregation Platform System design Practice ๐Ÿ†• Sep 13, 2026
Google Determine Whether Two Horses Are Genetically Related Coding Practice ๐Ÿ†• Sep 13, 2026
JP Morgan Chase Spark Cluster Sizing for a 100 GB Workload System design Practice ๐Ÿ†• Sep 13, 2026
Tekion / JP Morgan Chase Design a Resilient Multi-Table ETL Pipeline System design Practice ๐Ÿ†• Sep 13, 2026
JPMorgan Chase Employees Above Average Salary SQL Practice ๐Ÿ†• Sep 13, 2026
JPMorgan Chase Highest-Earning Employees By Department SQL Practice ๐Ÿ†• Sep 13, 2026
Juspay Sum Dynamic Weighted Tree Distances Coding Practice ๐Ÿ†• Sep 13, 2026
Juspay Minimum of Fixed-Window Maxima Coding Practice ๐Ÿ†• Sep 13, 2026
Lenskart Most Recent Active User Per Department SQL Practice ๐Ÿ†• Sep 13, 2026
Lenskart Test Execution Success Rate SQL Practice ๐Ÿ†• Sep 13, 2026
Lenskart First Duplicate Transaction Within Ten Minutes SQL Practice ๐Ÿ†• Sep 13, 2026
Amazon / Postman / Mintlify / Walmart / Vercel Design a Collaborative Document Editor System design Practice ๐Ÿ†• Sep 13, 2026
Cursor / Amazon Design a Versioned IDE Settings Sync System System design Practice ๐Ÿ†• Sep 13, 2026
Amazon Design a Return Drop-Store Booking System Low-level design Practice ๐Ÿ†• Sep 13, 2026
Amazon Design a Playlist Source Mixer Low-level design Practice ๐Ÿ†• Sep 13, 2026
Amazon Global Music Streaming Platform System design Practice ๐Ÿ†• Sep 13, 2026
Amazon Design an Amazon Locker System System design Practice ๐Ÿ†• Sep 13, 2026
Amazon Design a Scalable Artifact Repository System design Practice ๐Ÿ†• Sep 13, 2026
Amazon Design Device Backup and Restore System design Practice ๐Ÿ†• Sep 13, 2026
Amazon Design an Extensible Shipping Cost Calculator Low-level design Practice ๐Ÿ†• Sep 13, 2026
Google Split and Sort Array Coding Practice ๐Ÿ†• Sep 13, 2026
Google Minimum Number Of Moves to Obtain Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Reorganize a String Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Count Stepping Numbers In Range Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Container With Most Water Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Cheapest Flights Within K Stops Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Find Median from Data Stream Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Basic Calculator Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Distance Between Two Tree Nodes Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Course Schedule Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Longest Increasing Subsequence With Bounded Adjacent Difference Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Search in a Rotated Sorted Array Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Task Scheduler Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Merge Intervals Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon K Closest Elements in a Sorted Array Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Fare Between Stops on a Train Route Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Find the Safest Path in a Grid Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Stack with Constant-Time Middle Queries Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Decode an Encoded String Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Minimum Moves for Two Knights to Meet Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Bit at an Index After Repeated Binary Expansion Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Minimum Window Substring Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon First Unique Character in a Stream Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Maximize Distance to the Closest Occupied Seat Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Validate a Two-Color Chessboard Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Longest Common Subsequence Length Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Count Uni-Valued Subtrees Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Next Palindromic Time Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Kth Smallest Sum from Sorted Matrix Rows Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Meeting Room Scheduler Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Aggressive Cows Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon E-commerce Notification Router Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Unique String Permutations Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Three Sum Closest Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Course Schedule II Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Product of Array Except Self Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Maximum Sum BST in a Binary Tree Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Initial and Final Accounts in a Transfer Chain Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Minimize Malware Spread in a Facility Network Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Running Delivery Time Medians Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Maximum Non-Adjacent House Value Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Employee Ratings Management System Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Binary Tree Cameras Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Remove Duplicate Letters for the Largest Result Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Merge k Sorted Lists Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Nodes at a Given N-ary Tree Level Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Max Consecutive Ones III Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Maximum Profit in Job Scheduling Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon All Anagram Start Indices Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Count Islands with Eight-Direction Adjacency Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Maximum Saw Height for At Least M Cut Length Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Unique Pairs in a 2D Matrix Summing to Target Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon First Missing Positive Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Word Break II Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Word Break Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Binary Tree Right View Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Next Permutation Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Construct a Tree from Level-Order and Inorder Traversals Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Longest Happy Prefix Coding Practice ๐Ÿ†• Sep 13, 2026
Google Balanced Parentheses with Sequential Left Deletions Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Calculate Beauty Values Coding Practice ๐Ÿ†• Sep 13, 2026
Scribd Build a Reliable Event Write Handler AI coding Practice ๐Ÿ†• Sep 13, 2026
Scribd Design an External-Model Document Enrichment Pipeline System design Practice ๐Ÿ†• Sep 13, 2026
ByteDance / Google Design a Multimedia Content Moderation Platform System design Practice ๐Ÿ†• Sep 13, 2026
Citadel Maximize Workday Earnings Coding Practice ๐Ÿ†• Sep 13, 2026
Scribd Most Popular Actor by Movie Views Coding Practice ๐Ÿ†• Sep 13, 2026
Amazon Design Burst-Tolerant Notification Ingestion System design Practice ๐Ÿ†• Sep 13, 2026
Morgan Stanley Maximum Concurrent Processes Coding Practice ๐Ÿ†• Sep 12, 2026
Google Lexicographically Smallest K-Step Return Walk Coding Practice ๐Ÿ†• Sep 12, 2026
Tekion Dungeon Game Coding Practice ๐Ÿ†• Sep 12, 2026
Tekion IPO Coding Practice ๐Ÿ†• Sep 12, 2026
Hudson River Trading Lowest Number in an Open Range Coding Practice ๐Ÿ†• Sep 12, 2026
Hudson River Trading Catch Fish with Reusable Baits Coding Practice ๐Ÿ†• Sep 12, 2026
Hudson River Trading Maximum Rhombic Area Sum Coding Practice ๐Ÿ†• Sep 12, 2026
Hudson River Trading Count One-Swap Number Pairs Coding Practice ๐Ÿ†• Sep 12, 2026
Apple Merge Two Strings by Maximum Boundary Overlap Coding Practice ๐Ÿ†• Sep 12, 2026
SquadStack.ai Minimum-Cost Digit String Decoding Coding Practice ๐Ÿ†• Sep 12, 2026
SquadStack.ai Minimum Seats for One-Way Car Pooling Coding Practice ๐Ÿ†• Sep 12, 2026
SquadStack.ai Find the Dominant Seller SQL Practice ๐Ÿ†• Sep 12, 2026
Amazon / Goldman Sachs Repair recurring payments in the Wallet backend AI coding Practice ๐Ÿ†• Sep 12, 2026
Bobyard Design an Ordered Canvas Operation Coordinator Low-level design Practice ๐Ÿ†• Sep 12, 2026
Google Design and Implement a Highway Toll Session Domain Low-level design Practice ๐Ÿ†• Sep 12, 2026
ByteDance Design an Advertiser Campaign Configuration Platform System design Practice ๐Ÿ†• Sep 12, 2026
Bobyard Design an Asynchronous Random Image Generation Service System design Practice ๐Ÿ†• Sep 12, 2026
Amazon Word Search II Coding Practice ๐Ÿ†• Sep 12, 2026
Amazon Interleaving String Coding Practice ๐Ÿ†• Sep 12, 2026
Amazon Dynamic Prefix Search Collection Coding Practice ๐Ÿ†• Sep 12, 2026
Google Read-Optimized Duplicate Windows Coding Practice ๐Ÿ†• Sep 12, 2026
LinkedIn Max Stack Coding Practice ๐Ÿ†• Sep 12, 2026
Agoda Design a Flight Search and Booking Aggregator System design Practice ๐Ÿ†• Sep 11, 2026
Blinkit Design a Food Delivery Order Tracking System System design Practice ๐Ÿ†• Sep 11, 2026
The D.E. Shaw Group Design a Ride-Hailing Class Model Low-level design Practice ๐Ÿ†• Sep 11, 2026
FlexTrade Extract Error Log Context Coding Practice ๐Ÿ†• Sep 11, 2026
Blinkit LRU Cache Coding Practice ๐Ÿ†• Sep 11, 2026
Blinkit Search in Rotated Sorted Array Coding Practice ๐Ÿ†• Sep 11, 2026
Brex Concurrent Discounted Card Purchases Coding Practice ๐Ÿ†• Sep 11, 2026
The D. E. Shaw Group Decode Ways Coding Practice ๐Ÿ†• Sep 11, 2026
The D. E. Shaw Group Remove K Digits Coding Practice ๐Ÿ†• Sep 11, 2026
Kickdrum Students and Instructors for Database Systems SQL Practice ๐Ÿ†• Sep 11, 2026
Kickdrum Undo/Redo Timeline State Engine Coding Practice ๐Ÿ†• Sep 11, 2026
Kickdrum Wormhole Spacecraft Overtakes Coding Practice ๐Ÿ†• Sep 11, 2026
Replit Compress Editor Actions into Operational Transform Operations Coding Practice ๐Ÿ†• Sep 11, 2026
Toptal Valid Times on a Digital Clock Coding Practice ๐Ÿ†• Sep 11, 2026
FlexTrade Design Fault Localization for a Large Function Graph System design Practice ๐Ÿ†• Sep 11, 2026
FlexTrade Diagnose a Three-Stage Data Pipeline Latency Regression System design Practice ๐Ÿ†• Sep 11, 2026
FlexTrade Diagnose Memory Growth in a Long-Running Process System design Practice ๐Ÿ†• Sep 11, 2026
Goldman Sachs Repair Event Pre-Save Validation AI coding Practice ๐Ÿ†• Sep 11, 2026
Goldman Sachs Minimum Distinct Prefix Cost Coding Practice ๐Ÿ†• Sep 11, 2026
Anthropic Design a Gang-Scheduled GPU Inference Pool System design Practice ๐Ÿ†• Sep 11, 2026
Wayfair Design an Audio Fingerprint Recognition Service System design Practice ๐Ÿ†• Sep 11, 2026
Wayfair Design a Rental Product Circulation Domain Low-level design Practice ๐Ÿ†• Sep 11, 2026
Charta Health Concurrent Token-Bucket Rate Limiter Coding Practice ๐Ÿ†• Sep 11, 2026
Lyft Minimum Window Substring Coding Practice ๐Ÿ†• Sep 11, 2026
Arista Networks First Missing Number in a Consecutive Array Coding Practice ๐Ÿ†• Sep 11, 2026
ByteDance Delete K Values to Balance Index Sums Coding Practice ๐Ÿ†• Sep 11, 2026
Capital One Digit-Coded Card Validation Coding Practice ๐Ÿ†• Sep 11, 2026
Charta Health Inorder Successor in a Binary Search Tree Coding Practice ๐Ÿ†• Sep 11, 2026
Coinbase Task Management System Coding Practice ๐Ÿ†• Sep 11, 2026
Fireworks AI Mutual-Friend Referral Recommendations Coding Practice ๐Ÿ†• Sep 11, 2026
LinkedIn Uniform 0-6 from an Unknown Biased Bit Coding Practice ๐Ÿ†• Sep 11, 2026
Lyft Globally Versioned Key-Value Store Coding Practice ๐Ÿ†• Sep 11, 2026
Nextdoor In-Memory Database with Transactions and Savepoints Coding Practice ๐Ÿ†• Sep 11, 2026
Pure Storage Rasterize a Circle with Integer Pixels Coding Practice ๐Ÿ†• Sep 11, 2026
Pure Storage One-Shot Callback Event Dispatch Coding Practice ๐Ÿ†• Sep 11, 2026
Snorkel AI Snapshot Map with Sparse Version History Coding Practice ๐Ÿ†• Sep 11, 2026
Wayfair Container With Most Water Coding Practice ๐Ÿ†• Sep 11, 2026
Wayfair Assign Distinct Letter Values to Minimize XOR Coding Practice ๐Ÿ†• Sep 11, 2026
Wayfair Moving Cost by Volume and Category Coding Practice ๐Ÿ†• Sep 11, 2026
Waymo Shortest Paths to Multiple Targets Coding Practice ๐Ÿ†• Sep 11, 2026
Amazon Repair MovieDB Search and Recommendations AI coding Practice ๐Ÿ†• Sep 11, 2026
Ambience Healthcare Design a Medical Case ICD-10 Suggestion System System design Practice ๐Ÿ†• Sep 11, 2026
Ambience Healthcare Autoregressive Token Generation Coding Practice ๐Ÿ†• Sep 11, 2026
Ambience Healthcare Dynamic Batch Completion Times Coding Practice ๐Ÿ†• Sep 11, 2026
Amazon Page Referrer Reachability Coding Practice ๐Ÿ†• Sep 10, 2026
IBM Alphabetically Smallest Palindrome Coding Practice ๐Ÿ†• Sep 10, 2026
Akuna Capital Items Sort Coding Practice ๐Ÿ†• Sep 10, 2026
Akuna Capital Two Sum Coding Practice ๐Ÿ†• Sep 10, 2026
Akuna Capital Longest Substring Without Repeating Characters Coding Practice ๐Ÿ†• Sep 10, 2026
OnePay / Razorpay / Infosys Durable Messaging Chat System System design Practice ๐Ÿ†• Sep 10, 2026
Atlassian / Abnormal Security Audit a Service Architecture for Reliability System design Practice ๐Ÿ†• Sep 10, 2026
Attentive / Oracle / Amperity / Snap Inc. / Waabi Design a Time Series Metrics Database System design Practice ๐Ÿ†• Sep 10, 2026
Apple Design Multi-Data-Center Storage Demand Forecasting System design Practice ๐Ÿ†• Sep 10, 2026
Apple Design Predictive File Storage-Tier Placement System design Practice ๐Ÿ†• Sep 10, 2026
Snap Inc. Build a Persistent Chat Backend AI coding Practice ๐Ÿ†• Sep 10, 2026
Snap Inc. Design a Pre-Login Risk Challenge Service System design Practice ๐Ÿ†• Sep 10, 2026
LinkedIn / Rippling Design a Recent User-Activity Query System System design Practice ๐Ÿ†• Sep 10, 2026
Anthropic Implement Concurrent Image Transformations AI coding Practice ๐Ÿ†• Sep 10, 2026
Salesforce / American Express / Booking.com Design a Goal-Driven Tool-Using Agent System design Practice ๐Ÿ†• Sep 10, 2026
TikTok Catch Fish with Reusable Baits Coding Practice ๐Ÿ†• Sep 10, 2026
TikTok Maximum Rhombic Area Sum Coding Practice ๐Ÿ†• Sep 10, 2026
Akuna Capital Delivery Management System Coding Practice ๐Ÿ†• Sep 10, 2026
Akuna Capital Binary Circuit Coding Practice ๐Ÿ†• Sep 10, 2026
Akuna Capital K Smallest Substring Coding Practice ๐Ÿ†• Sep 10, 2026
Stripe Build a Task and Subtask Hierarchy Coding Practice ๐Ÿ†• Sep 10, 2026
Snap Inc. Sort Characters by Frequency Coding Practice ๐Ÿ†• Sep 10, 2026
Reddit Shortest Word Transformation Sequence Coding Practice ๐Ÿ†• Sep 10, 2026
Reddit Validate a Single-Letter Word Sequence Coding Practice ๐Ÿ†• Sep 10, 2026
Oracle Maximum of Window Minimums Coding Practice ๐Ÿ†• Sep 10, 2026
Oracle Classify Tree Nodes with SQL SQL Practice ๐Ÿ†• Sep 10, 2026
OpenAI Aggregate Machine Topology Coding Practice ๐Ÿ†• Sep 10, 2026
LinkedIn Thread-Safe LRU Cache with TTL Coding Practice ๐Ÿ†• Sep 10, 2026
LinkedIn Find Leaves of a Binary Tree Coding Practice ๐Ÿ†• Sep 10, 2026
Google Shortest Round Trip Through All Deliveries Coding Practice ๐Ÿ†• Sep 10, 2026
Google Real-Time Temperature Window Statistics Coding Practice ๐Ÿ†• Sep 10, 2026
Google Out-of-Order Logger Rate Limiter Coding Practice ๐Ÿ†• Sep 10, 2026
Google Lowest Common Manager for Employee Groups Coding Practice ๐Ÿ†• Sep 10, 2026
Epic Minimum Adjacent Transpositions Coding Practice ๐Ÿ†• Sep 10, 2026
Epic Telephone Keypad String Encoding Coding Practice ๐Ÿ†• Sep 10, 2026
Epic First Completed Mingo Line Coding Practice ๐Ÿ†• Sep 10, 2026
Epic Character Frequencies in First-Appearance Order Coding Practice ๐Ÿ†• Sep 10, 2026
ByteDance Path Existence in an Undirected Graph Coding Practice ๐Ÿ†• Sep 10, 2026
ByteDance Binary Tree Target-Sum Paths Coding Practice ๐Ÿ†• Sep 10, 2026
Booking.com Project JSON Fields into a Target Format Coding Practice ๐Ÿ†• Sep 10, 2026
Anthropic Find Duplicate File Groups Coding Practice ๐Ÿ†• Sep 10, 2026
Amazon Sliding-Window Rate Limiter Coding Practice ๐Ÿ†• Sep 10, 2026
Amazon Longest Substring Without Repeating Characters Coding Practice ๐Ÿ†• Sep 10, 2026
Amazon Most Frequent Consecutive Website Pattern Coding Practice ๐Ÿ†• Sep 10, 2026
Amazon Recent Advertisement Click Counts Coding Practice ๐Ÿ†• Sep 10, 2026
Blinkit Find a Peak Element Coding Practice ๐Ÿ†• Sep 10, 2026
Blinkit LFU Cache Coding Practice ๐Ÿ†• Sep 10, 2026
IBM Count Strictly Increasing Contiguous Windows Coding Practice ๐Ÿ†• Sep 10, 2026
Infosys Count Reachable Values by Halving and Decrementing Coding Practice ๐Ÿ†• Sep 10, 2026
Infosys Minimum Paid Swaps to Group Ones and Twos Coding Practice ๐Ÿ†• Sep 10, 2026
MakeMyTrip.com Bounded Producerโ€“Consumer Queue Coding Practice ๐Ÿ†• Sep 10, 2026
MakeMyTrip.com Detect a Cycle in a Directed Graph Coding Practice ๐Ÿ†• Sep 10, 2026
MakeMyTrip.com Parallel Workers with a Per-Phase Barrier Coding Practice ๐Ÿ†• Sep 10, 2026
MakeMyTrip.com Count Subarrays with Sum K Coding Practice ๐Ÿ†• Sep 10, 2026
Salesforce Kth Largest Element in an Array Coding Practice ๐Ÿ†• Sep 10, 2026
Salesforce LRU Cache Coding Practice ๐Ÿ†• Sep 10, 2026
Salesforce Rotting Oranges Coding Practice ๐Ÿ†• Sep 10, 2026
Salesforce Maximum Stock Profit with Unlimited Transactions Coding Practice ๐Ÿ†• Sep 10, 2026
Get My Parking Remove Duplicates From Sorted Array In Place Coding Practice ๐Ÿ†• Sep 09, 2026
Infosys Assign Cookies With Matching Parity Coding Practice ๐Ÿ†• Sep 09, 2026
Infosys Count Equal Code Pairs Within Distance K Coding Practice ๐Ÿ†• Sep 09, 2026
Infosys Detect Substring In Any Rotation Coding Practice ๐Ÿ†• Sep 09, 2026
Infosys Enumerate All Subsequences Coding Practice ๐Ÿ†• Sep 09, 2026
Infosys Daily Successful Transactions Per Department SQL Practice ๐Ÿ†• Sep 09, 2026
Infosys Product Of Array Except Self Coding Practice ๐Ÿ†• Sep 09, 2026
Infosys Longest Substring Without Repeating Characters Coding Practice ๐Ÿ†• Sep 09, 2026
ZS Top Salaries By Department SQL Practice ๐Ÿ†• Sep 09, 2026
ZS Fifth Highest Salary In A Department SQL Practice ๐Ÿ†• Sep 09, 2026
ZS Find Duplicate Email Addresses SQL Practice ๐Ÿ†• Sep 09, 2026
Commvault Missing and Repeated Number Coding Practice ๐Ÿ†• Sep 09, 2026
JPMorgan Chase Minimum Meeting Rooms Coding Practice ๐Ÿ†• Sep 09, 2026
JPMorgan Chase Maximum Game Board Score Coding Practice ๐Ÿ†• Sep 09, 2026
Capital One Sorted Extended Matrix Diagonals Coding Practice ๐Ÿ†• Sep 09, 2026
Amazon Find Minimum Cost Coding Practice ๐Ÿ†• Sep 09, 2026
Millennium Debug the Tape Cleaner SQL Practice ๐Ÿ†• Sep 09, 2026
Millennium Regression Hedge SQL Practice ๐Ÿ†• Sep 09, 2026
Millennium Client Markout Analysis SQL Practice ๐Ÿ†• Sep 09, 2026
Millennium Clean the Tape SQL Practice ๐Ÿ†• Sep 09, 2026
Millennium Measure Liquidity SQL Practice ๐Ÿ†• Sep 09, 2026
Millennium Debug Fair-Value Lookup SQL Practice ๐Ÿ†• Sep 09, 2026
Millennium Calculate the Half Spread Coding Practice ๐Ÿ†• Sep 09, 2026
Millennium Quote One Request Coding Practice ๐Ÿ†• Sep 09, 2026
Millennium Debug the Impact Model Coding Practice ๐Ÿ†• Sep 09, 2026
Millennium Track the Book and Mark Final PnL SQL Practice ๐Ÿ†• Sep 09, 2026
Millennium Risk Limits and Inventory Skew Coding Practice ๐Ÿ†• Sep 09, 2026
Millennium Debug the Risk-Limit Quoter Coding Practice ๐Ÿ†• Sep 09, 2026
Millennium Hedge Inventory with Return Covariance SQL Practice ๐Ÿ†• Sep 09, 2026
Walmart Distinct Bitwise-OR Scores of Increasing Subsequences Coding Practice ๐Ÿ†• Sep 09, 2026
Google Maximum Coins With Moving Tokens Coding Practice ๐Ÿ†• Sep 09, 2026
Google Maximum Elements With a Common Digit Coding Practice ๐Ÿ†• Sep 09, 2026
Perplexity AI Design Durable Long-Running Agentic Query Execution System design Practice ๐Ÿ†• Sep 09, 2026
Syfe Design A Token-Limited Multi-Profile Chat System design Practice ๐Ÿ†• Sep 09, 2026
Syfe Design Flash-Sale Notification Fanout System design Practice ๐Ÿ†• Sep 09, 2026
Syfe Allocate And Release Brokerage Inventory Low-level design Practice ๐Ÿ†• Sep 09, 2026
Commvault Design a Chess Move Validation Model Low-level design Practice ๐Ÿ†• Sep 09, 2026
Get My Parking List Failed And TTL-Expired Pending Payments Low-level design Practice ๐Ÿ†• Sep 09, 2026
Waymo / Nuro Design a Distributed Simulation Platform System design Practice ๐Ÿ†• Sep 09, 2026
OpenAI Design a Device Demand-Response Control System System design Practice ๐Ÿ†• Sep 09, 2026
LinkedIn Design a High-Throughput Single-Node Key-Value Store System design Practice ๐Ÿ†• Sep 09, 2026
Tesla Design a Content Delivery Network System design Practice ๐Ÿ†• Sep 09, 2026
Nuro / Motive Design a Vehicle Sensor and Obstacle Data Platform System design Practice ๐Ÿ†• Sep 09, 2026
Nuro Design Petabyte-Scale Range Search for Large Rows System design Practice ๐Ÿ†• Sep 09, 2026
Verkada Build SQLite-Backed GET and POST Endpoints AI coding Practice ๐Ÿ†• Sep 09, 2026
Tekion Open Lockers After Toggle Passes Coding Practice ๐Ÿ†• Sep 09, 2026
Tekion Coin Game From The Ends Coding Practice ๐Ÿ†• Sep 09, 2026
Tesla Resilient Fake API Client Coding Practice ๐Ÿ†• Sep 09, 2026
Stripe Rank Linked Merchants by Weighted Shared Attributes Coding Practice ๐Ÿ†• Sep 09, 2026
Stripe Project and Filter Structured Records Coding Practice ๐Ÿ†• Sep 09, 2026
Strala Evaluate Live Spreadsheet Expressions Coding Practice ๐Ÿ†• Sep 09, 2026
Square Map Black Cells to Covering 2x2 Blocks Coding Practice ๐Ÿ†• Sep 09, 2026
Runloop In-Memory Meeting Room Manager Coding Practice ๐Ÿ†• Sep 09, 2026
Roblox Track Received Byte Ranges Coding Practice ๐Ÿ†• Sep 09, 2026
Roblox Robot Navigation Around Lasers Coding Practice ๐Ÿ†• Sep 09, 2026
Reducto Recover Document Hierarchy from Indentation Coding Practice ๐Ÿ†• Sep 09, 2026
OpenAI Online Chess Move Validation Coding Practice ๐Ÿ†• Sep 09, 2026
OpenAI Count Friend Circles Coding Practice ๐Ÿ†• Sep 09, 2026
Nuro Versioned Key-Value Store with Suffix Truncation Coding Practice ๐Ÿ†• Sep 09, 2026
Nuro Trapping Rain Water Coding Practice ๐Ÿ†• Sep 09, 2026
Nuro Thread-Safe Task Storage and Worker Dispatch Coding Practice ๐Ÿ†• Sep 09, 2026
Nuro Group Sparse Points by Distance Threshold Coding Practice ๐Ÿ†• Sep 09, 2026
Nuro Course Ordering with Concurrent Updates Coding Practice ๐Ÿ†• Sep 09, 2026
LinkedIn Schedule Tasks with an Interval Tree Coding Practice ๐Ÿ†• Sep 09, 2026
LinkedIn Explore an Unknown Grid and Find a Path Coding Practice ๐Ÿ†• Sep 09, 2026
Google Minimum Root-to-Leaf Cut Cost Coding Practice ๐Ÿ†• Sep 09, 2026
Google Longest Consecutive Same-Color Line Coding Practice ๐Ÿ†• Sep 09, 2026
DoorDash Dasher Active Time Coding Practice ๐Ÿ†• Sep 09, 2026
Databricks Rolling Hit Counter Coding Practice ๐Ÿ†• Sep 09, 2026
Citadel Reference-Counted Deduplicating File System Coding Practice ๐Ÿ†• Sep 09, 2026
Apple Palindrome Match Percentage Coding Practice ๐Ÿ†• Sep 09, 2026
Anthropic Crawl Same-Hostname URLs Concurrently Coding Practice ๐Ÿ†• Sep 09, 2026
Amazon Meeting Rooms II Coding Practice ๐Ÿ†• Sep 08, 2026
Nvidia Check Endianness Of A Byte Array Coding Practice ๐Ÿ†• Sep 08, 2026
Nvidia Reverse A String Coding Practice ๐Ÿ†• Sep 08, 2026
Nvidia Implement Malloc Coding Practice ๐Ÿ†• Sep 08, 2026
Nvidia Middle Node Of A Linked List Coding Practice ๐Ÿ†• Sep 08, 2026
Nvidia Merge Two Arrays Into Sorted Order Coding Practice ๐Ÿ†• Sep 08, 2026
Amazon Remove K Digits Coding Practice ๐Ÿ†• Sep 08, 2026
Amazon Next Smaller Ticket Price Coding Practice ๐Ÿ†• Sep 08, 2026
Uber Per-Element Hit Counter Coding Practice ๐Ÿ†• Sep 08, 2026
Uber My Calendar I Coding Practice ๐Ÿ†• Sep 08, 2026
Wex Longest Substring Without Repeating Characters Coding Practice ๐Ÿ†• Sep 08, 2026
Wex Word Break II Coding Practice ๐Ÿ†• Sep 08, 2026
Freshworks LFU Cache Coding Practice ๐Ÿ†• Sep 08, 2026
Freshworks Product Of Array Except Self Coding Practice ๐Ÿ†• Sep 08, 2026
Microsoft Count Numbers with the Same Set-Bit Count Coding Practice ๐Ÿ†• Sep 08, 2026
Microsoft Equalize Arrays with Prefix and Suffix Increments Coding Practice ๐Ÿ†• Sep 08, 2026
Amazon Maximum System Memory Capacity Coding Practice ๐Ÿ†• Sep 08, 2026
Stripe Asynchronous Payment Event Processing Coding Practice ๐Ÿ†• Sep 08, 2026
Capital One Count Good Tuples Coding Practice ๐Ÿ†• Sep 08, 2026
Capital One Diagonal Robot Path Sum Coding Practice ๐Ÿ†• Sep 08, 2026
Capital One Rectangle Fit Queries Coding Practice ๐Ÿ†• Sep 08, 2026
Capital One Round-Robin WDL Order Coding Practice ๐Ÿ†• Sep 08, 2026
IBM Plus Mult Array Coding Practice ๐Ÿ†• Sep 08, 2026
IBM Get Maximum Amount Coding Practice ๐Ÿ†• Sep 08, 2026
TikTok Analyze Taxi Driver and Ride Metrics SQL Practice ๐Ÿ†• Sep 08, 2026
DRW Largest Number With Even Digit Frequencies Coding Practice ๐Ÿ†• Sep 08, 2026
DRW Count Balanced Nodes in a Rooted Tree Coding Practice ๐Ÿ†• Sep 08, 2026
TikTok Reverse Letters in Pairs Coding Practice ๐Ÿ†• Sep 08, 2026
TikTok Count Alternating Tile Groups Coding Practice ๐Ÿ†• Sep 08, 2026
TikTok Build Blocks from a Starting Position Coding Practice ๐Ÿ†• Sep 08, 2026
TikTok Find Local Maxima in Sensor Data Coding Practice ๐Ÿ†• Sep 08, 2026
TikTok Gradient Descent Linear Regression from Scratch Coding Practice ๐Ÿ†• Sep 08, 2026
TikTok Decision Tree Classifier from Scratch Coding Practice ๐Ÿ†• Sep 08, 2026
HSBC Distinct Products After Removing One Element Coding Practice ๐Ÿ†• Sep 08, 2026
HSBC Minimum Cleaning Robot Runs Coding Practice ๐Ÿ†• Sep 08, 2026
Optiver Overheat Prevention Controller Coding Practice ๐Ÿ†• Sep 08, 2026
Amazon Repair Workflow Issue and Sub-Issue Creation AI coding Practice ๐Ÿ†• Sep 08, 2026
Jane Street Design a Cross-Exchange Arbitrage Engine Low-level design Practice ๐Ÿ†• Sep 08, 2026
Wex Design a Threshold Logging and Alerting Model Low-level design Practice ๐Ÿ†• Sep 08, 2026
Salesforce Ludo Game Object Model Low-level design Practice ๐Ÿ†• Sep 08, 2026
OpenAI Design an Offline-Capable IoT Log Platform System design Practice ๐Ÿ†• Sep 08, 2026
ByteDance Design Observability for AI Agent Tool Calls System design Practice ๐Ÿ†• Sep 08, 2026
Waymo Shortest Distance from All Buildings Coding Practice ๐Ÿ†• Sep 08, 2026
Waymo Deterministic Depth-First Graph Traversal Coding Practice ๐Ÿ†• Sep 08, 2026
OpenAI In-Memory Key-Value Store Operations Coding Practice ๐Ÿ†• Sep 08, 2026
Microsoft Count Binary Substrings Coding Practice ๐Ÿ†• Sep 08, 2026
IBM Tree Pythagorean Triples Coding Practice ๐Ÿ†• Sep 08, 2026
IBM Flight Delay Propagation Coding Practice ๐Ÿ†• Sep 08, 2026
ByteDance Enumerate Directed Paths and Cycles Coding Practice ๐Ÿ†• Sep 08, 2026
Airbnb In-Memory File System Coding Practice ๐Ÿ†• Sep 08, 2026
Visa Planning Production Coding Practice ๐Ÿ†• Sep 08, 2026
Visa Subarray Sum Coding Practice ๐Ÿ†• Sep 08, 2026
Visa Minimum Anagram Period Coding Practice ๐Ÿ†• Sep 08, 2026
Snowflake Generating Login Codes Coding Practice ๐Ÿ†• Sep 07, 2026
Snowflake String Formation (Also for AI/ML Software Engineer Intern :) Coding Practice ๐Ÿ†• Sep 07, 2026
Nubank Design Chargeback Ingestion and Eligible-Record Export System design Practice ๐Ÿ†• Sep 07, 2026
Wells Fargo Event Statistics Aggregator Coding Practice ๐Ÿ†• Sep 07, 2026
Wells Fargo Ordered Deployment Configuration Validator Coding Practice ๐Ÿ†• Sep 07, 2026
Stripe Evolving Merchant Clusters and Persistent Pins Coding Practice ๐Ÿ†• Sep 06, 2026
Rippling Delivery Cost Tracker with Effective-Dated Rates Coding Practice ๐Ÿ†• Sep 06, 2026
Medallion Design an Automated Achievement Certificate System System design Practice ๐Ÿ†• Sep 06, 2026
Anthropic Design Telemetry Name Reconciliation System design Practice ๐Ÿ†• Sep 06, 2026
Oracle Top-K URLs Overall and in the Last 24 Hours Coding Practice ๐Ÿ†• Sep 05, 2026
Oracle Maximum Subarray Sum with Length at Most K Coding Practice ๐Ÿ†• Sep 05, 2026
ByteDance Least Recently Used Cache Coding Practice ๐Ÿ†• Sep 05, 2026
Capital One Count Digits 0, 2, and 4 Coding Practice ๐Ÿ†• Sep 05, 2026
Capital One Inventory Discount Tracker Coding Practice ๐Ÿ†• Sep 05, 2026
Capital One Count Alternating Tile Groups Coding Practice ๐Ÿ†• Sep 05, 2026
Amazon Get Distinct Pairs Coding Practice ๐Ÿ†• Sep 05, 2026
Oracle Design a Rolling Top Error-Services Monitor System design Practice ๐Ÿ†• Sep 05, 2026
Oracle Design a Rolling Top-Users Event Leaderboard System design Practice ๐Ÿ†• Sep 05, 2026
Rippling Design a Publisher News Feed System design Practice ๐Ÿ†• Sep 05, 2026
Paytm Design a Live Market Tick Brokerage Platform System design Practice ๐Ÿ†• Sep 05, 2026
Attentive Design a Third-Party Data Pull Platform System design Practice ๐Ÿ†• Sep 05, 2026
Edge Design a Website Content Parsing Service System design Practice ๐Ÿ†• Sep 05, 2026
Twilio Design an Idempotent Multi-Source Event Store System design Practice ๐Ÿ†• Sep 05, 2026
Roblox Design Shared To-Do List Synchronization System design Practice ๐Ÿ†• Sep 05, 2026
Tekion Design an Inventory Stock Control Domain Low-level design Practice ๐Ÿ†• Sep 05, 2026
Rippling Maximum Currency Conversion Along a Simple Path Coding Practice ๐Ÿ†• Sep 05, 2026
FlexTrade Best Time to Buy and Sell Stock Coding Practice ๐Ÿ†• Sep 04, 2026
ByteDance Restore Addresses with K Segments Coding Practice ๐Ÿ†• Sep 04, 2026
LinkedIn Flowerbed Capacity Queries Coding Practice ๐Ÿ†• Sep 04, 2026
Microsoft Maximum Decrypted Score Coding Practice ๐Ÿ†• Sep 04, 2026
Microsoft Minimum Team Size From Every Start Coding Practice ๐Ÿ†• Sep 04, 2026
Google Min Absolute Sum Coding Practice ๐Ÿ†• Sep 04, 2026
World Wide Technology Design a Prompt-Aware RAG Query Service System design Practice ๐Ÿ†• Sep 04, 2026
The Walt Disney Company Design an Authentication Session Lifecycle Low-level design Practice ๐Ÿ†• Sep 04, 2026
Snowflake Minimum Clicks Between Wiki Pages Coding Practice ๐Ÿ†• Sep 04, 2026
Commure Design Monthly Stream Royalties and Artist Payouts System design Practice ๐Ÿ†• Sep 04, 2026
David AI Design an Audio AI Processing Backend System design Practice ๐Ÿ†• Sep 04, 2026
Abridge Clone a Connected Graph Coding Practice ๐Ÿ†• Sep 03, 2026
Astrotalk Design a Cached Astrologer Listing Service System design Practice ๐Ÿ†• Sep 03, 2026
Verkada Design a Live A-or-B Survey System design Practice ๐Ÿ†• Sep 03, 2026
eBay Design a Shopping Search Bar System design Practice ๐Ÿ†• Sep 03, 2026
Astrotalk Design an Idempotent Action API System design Practice ๐Ÿ†• Sep 03, 2026
Oracle Design GPU Host Health Monitoring and Repair System design Practice ๐Ÿ†• Sep 03, 2026
SentinelOne Design and Implement a Concurrent Web Crawler Library Low-level design Practice ๐Ÿ†• Sep 03, 2026
Amazon Design and Implement a Train Route Fare Calculator Low-level design Practice ๐Ÿ†• Sep 03, 2026
Amazon Design and Implement a Sliding Window Maximum API Low-level design Practice ๐Ÿ†• Sep 03, 2026
Roblox Rate Limiter Sliding Window With Per-Entity Limits Coding Practice ๐Ÿ†• Sep 02, 2026
DoorDash Build a Dasher Payout Service AI coding Practice ๐Ÿ†• Sep 02, 2026
Amazon Repair Blog Post Creation AI coding Practice ๐Ÿ†• Sep 02, 2026
Rivian Design Autonomous-Vehicle Sensor Health and Diagnostics System design Practice ๐Ÿ†• Sep 02, 2026
DRW Shortest Path Around Rectangular Obstacles Coding Practice ๐Ÿ†• Sep 02, 2026
Amazon Minimum Adjacent Swaps to Group Binary Values Coding Practice ๐Ÿ†• Sep 02, 2026
ByteDance Weighted Round-Robin Seller Task Scheduler Coding Practice ๐Ÿ†• Sep 02, 2026
Google Most-Frequent Next-Word Predictor Coding Practice ๐Ÿ†• Sep 02, 2026
Google Shortest Path Node Count Avoiding Broken Nodes Coding Practice ๐Ÿ†• Sep 02, 2026
Reddit Billing Log with Undo and Redo Coding Practice ๐Ÿ†• Sep 02, 2026
Salesforce Implement Merge Sort Coding Practice ๐Ÿ†• Sep 02, 2026
Salesforce Sorted Doubly Linked List to Balanced BST In Place Coding Practice ๐Ÿ†• Sep 02, 2026
Salesforce Top K Frequent Elements After Each Stream Update Coding Practice ๐Ÿ†• Sep 02, 2026
Uber Find File Paths in a Directory Tree Coding Practice ๐Ÿ†• Sep 02, 2026
Verkada Common Camera Motion Intervals Coding Practice ๐Ÿ†• Sep 02, 2026
ByteDance Alien Dictionary Coding Practice ๐Ÿ†• Sep 02, 2026
ByteDance Minimum Removals for Non-Overlapping Intervals Coding Practice ๐Ÿ†• Sep 02, 2026
Airbnb Progressive Banking System with Cashback Coding Practice ๐Ÿ†• Sep 01, 2026
Goldman Sachs Maximize Element Frequency Coding Practice ๐Ÿ†• Sep 01, 2026
Goldman Sachs Notification Deduplication Window Coding Practice ๐Ÿ†• Sep 01, 2026
Amazon Maximum Frequency Stack Coding Practice ๐Ÿ†• Sep 01, 2026
Goldman Sachs The Maze Coding Practice ๐Ÿ†• Sep 01, 2026
JPMorgan Chase Top K Frequent Values Across Key-Partitioned Shards Coding Practice ๐Ÿ†• Sep 01, 2026
Mercor Shortest Path in a Grid with Obstacles Elimination Coding Practice ๐Ÿ†• Sep 01, 2026
Microsoft Arithmetic Expression Evaluator Coding Practice ๐Ÿ†• Sep 01, 2026
Microsoft Employee Hierarchy Cycle and Depth Analysis Coding Practice ๐Ÿ†• Sep 01, 2026
Microsoft Most Visited String Sectors Coding Practice ๐Ÿ†• Sep 01, 2026
IMC Trading Design Heterogeneous Compute Workload Allocation System design Practice ๐Ÿ†• Sep 01, 2026
Google Design a Bookshelf with Reading Progress Low-level design Practice ๐Ÿ†• Sep 01, 2026
Akuna Capital Minimum Swaps Coding Practice ๐Ÿ†• Sep 01, 2026
Akuna Capital Minimum Absolute Difference Pairs Coding Practice ๐Ÿ†• Sep 01, 2026
Google Filesystem Entity Total Size Coding Practice ๐Ÿ†• Sep 01, 2026
LinkedIn Largest Number Coding Practice ๐Ÿ†• Sep 01, 2026
Snap Inc. Most Stones Removed with Same Row or Column Coding Practice ๐Ÿ†• Sep 01, 2026
LinkedIn Repeated Shortest Word Distance Queries Coding Practice ๐Ÿ†• Sep 01, 2026
Snowflake Design an Interactive SQL Notebook System design Practice ๐Ÿ†• Aug 31, 2026
Nubank Design an Online Coding Competition Platform System design Practice ๐Ÿ†• Aug 31, 2026
Mercor Design a Project-to-Contractor Matching Platform System design Practice ๐Ÿ†• Aug 31, 2026
OpenAI Design a Multi-Channel Bot Notification Service Low-level design Practice ๐Ÿ†• Aug 31, 2026
Visa Collect Branches for a Bird Nest Coding Practice ๐Ÿ†• Aug 31, 2026
Visa Count Reverse-Digit Pairs Coding Practice ๐Ÿ†• Aug 31, 2026
Salesforce Diameter of an Acyclic Undirected Graph Coding Practice ๐Ÿ†• Aug 31, 2026
Scale AI Four-Player Trick-Taking Card Game Simulation Coding Practice ๐Ÿ†• Aug 31, 2026
Snowflake Design In-Memory File System Coding Practice ๐Ÿ†• Aug 31, 2026
MongoDB Recursive Nested JSON Key Search Coding Practice ๐Ÿ†• Aug 31, 2026
Salesforce Path Sum Coding Practice ๐Ÿ†• Aug 31, 2026
Google Earliest Time of Full Connection Coding Practice ๐Ÿ†• Aug 31, 2026
Google Parent-Child Deletion Order Coding Practice ๐Ÿ†• Aug 31, 2026
Lyft Rotten Oranges / Grid Infection BFS Coding Practice ๐Ÿ†• Aug 31, 2026
Amazon Linked-List Queue with Delete and Deduplication Coding Practice ๐Ÿ†• Aug 31, 2026
Databricks Minimize Commute Coding Practice ๐Ÿ†• Aug 31, 2026
Google Maximize Two Endpoint Values Coding Practice ๐Ÿ†• Aug 31, 2026
Pinterest Expression Add Operators Coding Practice ๐Ÿ†• Aug 31, 2026
Pinterest Nested JSON Schema Validator Coding Practice ๐Ÿ†• Aug 31, 2026
Amazon Design and Implement a Streaming Median API Low-level design Practice ๐Ÿ†• Aug 31, 2026
Stripe Design an Idempotent Ledger Service System design Practice ๐Ÿ†• Aug 30, 2026
ByteDance Design a Top Songs by Country Leaderboard System design Practice ๐Ÿ†• Aug 30, 2026
Airwallex Design an Asynchronous File Analysis and Reporting System System design Practice ๐Ÿ†• Aug 30, 2026
Anthropic Design Opaque-GPU Inference Capacity System design Practice ๐Ÿ†• Aug 30, 2026
Verkada Design a Camera Heartbeat Health Dashboard System design Practice ๐Ÿ†• Aug 30, 2026
Verkada Design a Distributed Matrix Transpose Service System design Practice ๐Ÿ†• Aug 30, 2026
Matroid Count Good Tuples Coding Practice ๐Ÿ†• Aug 30, 2026
Matroid Validate 3x3 Digit Windows Coding Practice ๐Ÿ†• Aug 30, 2026
Matroid Diagonal Robot Path Sum Coding Practice ๐Ÿ†• Aug 30, 2026
Matroid Count House Segments After Destruction Coding Practice ๐Ÿ†• Aug 30, 2026
Wolverine Trading Market Share Ticker with Imbalance SQL Practice ๐Ÿ†• Aug 30, 2026
Wolverine Trading Hedges Outperforming Their Trades SQL Practice ๐Ÿ†• Aug 30, 2026
Rippling Stateful Log Transform and Search Coding Practice ๐Ÿ†• Aug 30, 2026
Hadrian Process Graph Rule Validation Coding Practice ๐Ÿ†• Aug 30, 2026
Capital One Queue Check-in Simulation with Capacity Limit Coding Practice ๐Ÿ†• Aug 30, 2026
Capital One Dynamic Wall Building and Range Query Coding Practice ๐Ÿ†• Aug 30, 2026
Capital One Count Key Changes Coding Practice ๐Ÿ†• Aug 30, 2026
Capital One Longest Common Prefix of Number Pairs Coding Practice ๐Ÿ†• Aug 30, 2026
Microsoft Maximum String Operations Coding Practice ๐Ÿ†• Aug 29, 2026
Microsoft Authentication System Coding Practice ๐Ÿ†• Aug 29, 2026
Capital One Product of Digits Minus Sum Coding Practice ๐Ÿ†• Aug 29, 2026
Capital One Minimize Expression Value with Parentheses Coding Practice ๐Ÿ†• Aug 29, 2026
Capital One Leftmost Memory Block Allocator Coding Practice ๐Ÿ†• Aug 29, 2026
Capital One Optimal Lamp Coordinate Coding Practice ๐Ÿ†• Aug 29, 2026
Roblox Event ID Check Completion Times Coding Practice ๐Ÿ†• Aug 29, 2026
Roblox Count House Segments After Destruction Coding Practice ๐Ÿ†• Aug 29, 2026
Google Design a Massive Geospatial Data Visualization Platform System design Practice ๐Ÿ†• Aug 29, 2026
Google Design an Embeddable Streaming Chat Agent System design Practice ๐Ÿ†• Aug 29, 2026
OpenAI Power Plant Operations Platform System design Practice ๐Ÿ†• Aug 29, 2026
Uber Design and Implement Ride Dispatch and Trip Lifecycle Low-level design Practice ๐Ÿ†• Aug 29, 2026
ClearTax Design a Railway Search and Booking Platform System design Practice ๐Ÿ†• Aug 29, 2026
ClearTax / Motive / Meesho Design a Movie Ticket Booking System Low-level design Practice ๐Ÿ†• Aug 29, 2026
Goldman Sachs Palindrome Counter Coding Practice ๐Ÿ†• Aug 29, 2026
WeRide Drawing Edge Coding Practice ๐Ÿ†• Aug 29, 2026
WeRide Paint the Ceiling Coding Practice ๐Ÿ†• Aug 29, 2026
WeRide Unequal Block Structure Coding Practice ๐Ÿ†• Aug 29, 2026
Airbnb In-Memory Database Coding Practice ๐Ÿ†• Aug 28, 2026
Snowflake / Amperity / Fivetran Design a Unified SaaS Analytics Platform System design Practice ๐Ÿ†• Aug 28, 2026
NVIDIA Autonomous-Driving Camera Perception Pipeline System design Practice ๐Ÿ†• Aug 28, 2026
Oracle Design a Software Load Balancer System design Practice ๐Ÿ†• Aug 28, 2026
Tesla Design an E-commerce Order Fulfillment System System design Practice ๐Ÿ†• Aug 28, 2026
Oracle Design and Implement an Active-Passive Key-Value Store Low-level design Practice ๐Ÿ†• Aug 28, 2026
Amazon Minimum Grid Inconvenience Coding Practice ๐Ÿ†• Aug 28, 2026
Indeed Redesign a Production Spam Classifier System design Practice ๐Ÿ†• Aug 28, 2026
IMC Grid Paths with Override Passes Coding Practice ๐Ÿ†• Aug 28, 2026
Walmart Minimum Stress Path Coding Practice ๐Ÿ†• Aug 27, 2026
Microsoft Roll the String Coding Practice ๐Ÿ†• Aug 27, 2026
Microsoft Minimum Length Good Subarray Coding Practice ๐Ÿ†• Aug 27, 2026
LinkedIn Design a Job Listing Freshness Platform System design Practice ๐Ÿ†• Aug 27, 2026
Amazon Repair Event Listing Filters, Pagination, and Caching AI coding Practice ๐Ÿ†• Aug 27, 2026
Maven Securities Prime Factor Visitation Coding Practice ๐Ÿ†• Aug 26, 2026
Maven Securities Resource Allocation Coding Practice ๐Ÿ†• Aug 26, 2026
TikTok Event ID Check Completion Times Coding Practice ๐Ÿ†• Aug 26, 2026
TikTok Find Sum Pairs (for mle also :) Coding Practice ๐Ÿ†• Aug 26, 2026
Superhuman / Grammarly Design an Ephemeral Messaging Service System design Practice ๐Ÿ†• Aug 26, 2026
Amazon Customer Support Chat Platform System design Practice ๐Ÿ†• Aug 26, 2026
ElevenLabs AI-Assisted Commerce Platform System design Practice ๐Ÿ†• Aug 26, 2026
ByteDance Match Consecutive Word Boundaries (for mle also :) Coding Practice ๐Ÿ†• Aug 25, 2026
ByteDance Minimize Expression Value with Parentheses (for mle also :) Coding Practice ๐Ÿ†• Aug 25, 2026
ByteDance Leftmost Memory Block Allocator (for mle also :) Coding Practice ๐Ÿ†• Aug 25, 2026
ByteDance Find Sum Pairs (for mle also :) Coding Practice ๐Ÿ†• Aug 25, 2026
Netflix / Google Design a Grounded Recommendation Chatbot System design Practice ๐Ÿ†• Aug 25, 2026
Rippling / Apple / Oracle / Confluent Design a Centralized Log Ingestion and Search Platform System design Practice ๐Ÿ†• Aug 25, 2026
Tekion Design a Continuous Table Merge into NoSQL System design Practice ๐Ÿ†• Aug 25, 2026
Apple Design a Multi-Version Configuration Service System design Practice ๐Ÿ†• Aug 25, 2026
Microsoft Design a Ticket Context and System Status Platform System design Practice ๐Ÿ†• Aug 25, 2026
Waymo Design an Autonomous-Vehicle Cloud Command System System design Practice ๐Ÿ†• Aug 25, 2026
Cerebras Dense Vector Dot Product Coding Practice ๐Ÿ†• Aug 24, 2026
IBM Expiring Authentication Token Manager Coding Practice ๐Ÿ†• Aug 24, 2026
Goldman Sachs Maximum Ones After K Operations Coding Practice ๐Ÿ†• Aug 24, 2026
TikTok Repeated Grouped Digit Sum Coding Practice ๐Ÿ†• Aug 24, 2026
Amazon / Microsoft Design a Marketplace Product Search Service System design Practice ๐Ÿ†• Aug 24, 2026
JP Morgan Chase Design a Multimodal RAG Retrieval Platform System design Practice ๐Ÿ†• Aug 24, 2026
JP Morgan Chase Design a Region-Aware User Record Store System design Practice ๐Ÿ†• Aug 24, 2026
JP Morgan Chase Design a Reliable Endpoint File Transfer Service System design Practice ๐Ÿ†• Aug 24, 2026
JP Morgan Chase Design a Role-Based Token Authorization Platform System design Practice ๐Ÿ†• Aug 24, 2026
Amazon Design a Seller Product-Image Upload Service System design Practice ๐Ÿ†• Aug 24, 2026
Visa Design an E-Commerce Top-Spender Query System design Practice ๐Ÿ†• Aug 24, 2026
Amazon Design an Online Coding Practice Platform System design Practice ๐Ÿ†• Aug 24, 2026
Goldman Sachs Repair the Held-Ticket Confirmation Lifecycle AI coding Practice ๐Ÿ†• Aug 24, 2026
Alpaca Return Distinct Elements Coding Practice ๐Ÿ†• Aug 23, 2026
Alpaca Make a Sorted Array Unique In Place Coding Practice ๐Ÿ†• Aug 23, 2026
Citadel Minimum Changes for Palindromic Blocks Coding Practice ๐Ÿ†• Aug 23, 2026
Google Assign Locker Coding Practice ๐Ÿ†• Aug 23, 2026
Microsoft Minimum Fuel Cost Between Cities Coding Practice ๐Ÿ†• Aug 23, 2026
Microsoft Design a Multi-Tenant One-Time Password Service System design Practice ๐Ÿ†• Aug 23, 2026
Salesforce Design a Real-Time Direct Messaging System System design Practice ๐Ÿ†• Aug 23, 2026
Oracle Design a Scheduled Fan-Out Delivery Platform System design Practice ๐Ÿ†• Aug 23, 2026
Microsoft Design a Web Crawler and Inverted Index System design Practice ๐Ÿ†• Aug 23, 2026
Walmart / Crowdstrike Design Multi-Cloud Blob Malware Scanning System design Practice ๐Ÿ†• Aug 23, 2026
Salesforce Design a Connect Four Game Low-level design Practice ๐Ÿ†• Aug 23, 2026
Walmart Design a Job Marketplace Domain Low-level design Practice ๐Ÿ†• Aug 23, 2026
Tekion Design a Workflow Orchestrator Domain Low-level design Practice ๐Ÿ†• Aug 23, 2026
Barclays Allocate Workers for a Production Ratio Coding Practice ๐Ÿ†• Aug 22, 2026
Anthropic Cloud Storage System Coding Practice ๐Ÿ†• Aug 22, 2026
Uber Design a Price Movement Alert Platform System design Practice ๐Ÿ†• Aug 22, 2026
Citadel / Goldman Sachs Design a Course Registration Platform System design Practice ๐Ÿ†• Aug 22, 2026
LinkedIn Design a Rolling Shared-Article Leaderboard System design Practice ๐Ÿ†• Aug 22, 2026
Google Directed Graph Reachability Queries Coding Practice ๐Ÿ†• Aug 21, 2026
Pinterest Phone Spam Report Counter Coding Practice ๐Ÿ†• Aug 21, 2026
Pinterest Minimize the Longest Hike Between Rest Stops Coding Practice ๐Ÿ†• Aug 21, 2026
Netflix Undo and Redo Command History Coding Practice ๐Ÿ†• Aug 21, 2026
Pinterest Count Ordered Combination Sums with Negative Values Coding Practice ๐Ÿ†• Aug 21, 2026
Pinterest Count Ordered Combination Sums Coding Practice ๐Ÿ†• Aug 21, 2026
Pinterest Fixed-Length Combination Sum Coding Practice ๐Ÿ†• Aug 21, 2026
Pinterest Combination Sum with Single-Use Values Coding Practice ๐Ÿ†• Aug 21, 2026
Pinterest Combination Sum with Reusable Values Coding Practice ๐Ÿ†• Aug 21, 2026
Apple Design Hash Map Coding Practice ๐Ÿ†• Aug 21, 2026
ByteDance Search in a Rotated Sorted Array with Duplicates Coding Practice ๐Ÿ†• Aug 21, 2026
OpenAI One-Nearest-Neighbor Classification Coding Practice ๐Ÿ†• Aug 21, 2026
OpenAI Plant Infection Simulation, Part 4: Death Countdown Coding Practice ๐Ÿ†• Aug 21, 2026
Illumio Least Recently Used Cache Coding Practice ๐Ÿ†• Aug 21, 2026
Google Minimum Racks for Server Resources Coding Practice ๐Ÿ†• Aug 21, 2026
Meta First Common Ancestor with Parent Pointers Coding Practice ๐Ÿ†• Aug 21, 2026
Meta Minimum Removal for Balanced Parentheses Coding Practice ๐Ÿ†• Aug 21, 2026
Google Count Prefix Paths in a Character Graph Coding Practice ๐Ÿ†• Aug 21, 2026
Airbnb Cloud Storage with User Backup and Restore Coding Practice ๐Ÿ†• Aug 21, 2026
Anthropic Task Management System Coding Practice ๐Ÿ†• Aug 21, 2026
General Motors Per-Client Sliding-Window Rate Limiter Coding Practice ๐Ÿ†• Aug 21, 2026
Netflix Timed Cache with Sidecar Cleanup Coding Practice ๐Ÿ†• Aug 21, 2026
ByteDance Count Numbers with an Even Digit Count Coding Practice ๐Ÿ†• Aug 21, 2026
ByteDance Sorted Absolute-Difference Sums Across Cyclic Shifts Coding Practice ๐Ÿ†• Aug 21, 2026
ByteDance Sort Concentric Matrix Borders Clockwise Coding Practice ๐Ÿ†• Aug 21, 2026
ByteDance Count House Segments After Sequential Destruction Coding Practice ๐Ÿ†• Aug 21, 2026
Quince Minimum Sprinklers to Cover an Interval Coding Practice ๐Ÿ†• Aug 21, 2026
Quince Check a Repeated String as a Subsequence Coding Practice ๐Ÿ†• Aug 21, 2026
Temu Merge Two Sorted Collections Without Duplicates Coding Practice ๐Ÿ†• Aug 21, 2026
Anthropic Design a Model-Weight Deployment Platform System design Practice ๐Ÿ†• Aug 21, 2026
ByteDance Cache Avalanche Resilience System design Practice ๐Ÿ†• Aug 21, 2026
ByteDance Cache-Aside Consistency Recovery System design Practice ๐Ÿ†• Aug 21, 2026
Netflix Design a Competitive Ad Exclusion Service System design Practice ๐Ÿ†• Aug 21, 2026
General Motors Design a Composable AI Function Platform System design Practice ๐Ÿ†• Aug 21, 2026
Cursor Hash-Tree Client/Server Synchronization System design Practice ๐Ÿ†• Aug 21, 2026
ByteDance Relational Query Index Design System design Practice ๐Ÿ†• Aug 21, 2026
ByteDance SQL Index Eligibility Analysis System design Practice ๐Ÿ†• Aug 21, 2026
IBM Drawing Edge Coding Practice ๐Ÿ†• Aug 20, 2026
IBM Increasing-Value Triplets Under a Threshold Coding Practice ๐Ÿ†• Aug 20, 2026
Meta Maximum Unique-Character Word Subset Coding Practice ๐Ÿ†• Aug 20, 2026
Meta Validate a Palindrome After Limited Deletions Coding Practice ๐Ÿ†• Aug 20, 2026
Meta Minimum-Sum Root-to-Leaf Path Coding Practice ๐Ÿ†• Aug 20, 2026
Nuro Schedule Buffered Video Playback Coding Practice ๐Ÿ†• Aug 20, 2026
Nuro Reveal a Minesweeper Region Coding Practice ๐Ÿ†• Aug 20, 2026
Meta Design a Boolean Status Search Index System design Practice ๐Ÿ†• Aug 20, 2026
Amazon Design and Implement Movie Theater Ticket Pricing Low-level design Practice ๐Ÿ†• Aug 20, 2026
Oracle Design a Healthcare Data Ingestion Pipeline System design Practice ๐Ÿ†• Aug 19, 2026
eBay Design a Top-Selling Items and Categories Dashboard System design Practice ๐Ÿ†• Aug 19, 2026
eBay Design a Workplace Lunch Ordering Platform System design Practice ๐Ÿ†• Aug 19, 2026
Micro1 Design an In-Memory Read-Through Cache Low-level design Practice ๐Ÿ†• Aug 19, 2026
Meta Build an In-Memory Cloud Storage System AI coding Practice ๐Ÿ†• Aug 19, 2026
IBM Count Invalid Log Groups Coding Practice ๐Ÿ†• Aug 18, 2026
IBM Count Paginated Medical Records in a Range Coding Practice ๐Ÿ†• Aug 18, 2026
Pinterest Design an Asynchronous Bulk Record Update Service System design Practice ๐Ÿ†• Aug 18, 2026
Axon Design a Nearest-Timestamp Device Status Service System design Practice ๐Ÿ†• Aug 17, 2026
Uber Freight Design a Rolling Restaurant Analytics Dashboard System design Practice ๐Ÿ†• Aug 17, 2026
Capital One Highest Version B Viewing Week SQL Practice ๐Ÿ†• Aug 17, 2026
Airtable / Meta / Microsoft Design a Backend Search Engine System design Practice Aug 16, 2026
Zoox / Uber Design a Nearby Autonomous Vehicle Search Service System design Practice Aug 16, 2026
Amazon Design a Multi-Branch Library Management System System design Practice Aug 16, 2026
LinkedIn Design a Ranked Hybrid Social Feed System design Practice Aug 16, 2026
Microsoft Design a Distributed Expiring LRU Cache System design Practice Aug 16, 2026
Salesforce Design a Multi-Tenant Order-Statistics Index System design Practice Aug 16, 2026
DoorDash Design a Sliding-Window Restaurant Leaderboard System design Practice Aug 16, 2026
Adobe Design a Versioned Localization Resource Platform System design Practice Aug 16, 2026
Salesforce Design an Enterprise Multi-Tenant Messaging Platform System design Practice Aug 16, 2026
Adobe Design an Extensible Tree Traversal Toolkit System design Practice Aug 16, 2026
Apple Design Cross-Device Wallpaper Synchronization System design Practice Aug 16, 2026
Snowflake Design Calendar Client State and Recurrence System design Practice Aug 15, 2026
Microsoft Desktop Notification Center Low-level design Practice Aug 15, 2026
Microsoft Design Grounded Local Sports Recommendations System design Practice Aug 15, 2026
Giga Design a Browser-Automated Customer Support Agent System design Practice Aug 14, 2026
Rippling / Amazon Design an Event Ingestion Platform System design Practice Aug 14, 2026
Spotify Design a Personalized Session Playlist Ranking System System design Practice Aug 14, 2026
Wells Fargo Cursor-Paginated Records Service System design Practice Aug 14, 2026
Rippling Delivery Cost Tracker Coding Practice Aug 14, 2026
Adobe Count Parent Nodes With a Target Sum Coding Practice Aug 14, 2026
Adobe Largest Binary Number by Concatenation Coding Practice Aug 14, 2026
Anthropic Design Peer-to-Peer Model Distribution System design Practice Aug 13, 2026
OpenAI Design a Distributed Crossword Solver System design Practice Aug 13, 2026
Meta Design a Multimodal Public-Content Safety Platform System design Practice Aug 13, 2026
Databricks Online Bookseller Platform System design Practice Aug 13, 2026
Agoda Resilient Hotel Search Frontend System design Practice Aug 13, 2026
IMC Rock Jumping Coding Practice Aug 13, 2026
IMC Stack Batch Removal Coding Practice Aug 13, 2026
Anthropic Inference Engine (Fellow Program :D AI coding Practice Aug 12, 2026
Anthropic Debug Extremely Randomized Trees (Fellow Program :) AI coding Practice Aug 12, 2026
Figma Design Comments for a Collaborative Canvas System design Practice Aug 12, 2026
Goldman Sachs Design a Live-Stream Chat System System design Practice Aug 12, 2026
Coinbase / Goldman Sachs Design a Brokerage Order Processing System System design Practice Aug 12, 2026
Mercor Design a Unique Username Registration System System design Practice Aug 12, 2026
Shopify Design an Extensible Text Editor Low-level design Practice Aug 12, 2026
Amazon Design Smart-Device Feature Announcement Delivery System design Practice Aug 12, 2026
Amazon Design a Multi-Stage Audio Buffer Pipeline Low-level design Practice Aug 12, 2026
Apple Design a Mobile Application Event Collection API System design Practice Aug 11, 2026
Rippling / Retool Design a Room-Type Hotel Booking System System design Practice Aug 11, 2026
Databricks Design an LLM Content Safety Service System design Practice Aug 11, 2026
Microsoft / Bloomberg LP Design a Library Circulation System Low-level design Practice Aug 11, 2026
Capital One Highest-Spend Advertisement SQL Practice Aug 11, 2026
Visa Maximum Server Processing Time Coding Practice Aug 11, 2026
Visa Binary Sorting Rounds After Flips Coding Practice Aug 11, 2026
Amazon / Oracle Design a Netflix-Style Streaming Platform System design Practice Aug 10, 2026
Uber Design a Driver Review Leaderboard System design Practice Aug 10, 2026
Oracle Design a Remote Browser Isolation Service System design Practice Aug 10, 2026
Pinterest / Bloomberg LP Design a Blackjack Table Game Low-level design Practice Aug 10, 2026
Spotify Design a Weekly User Activity Prediction System System design Practice Aug 10, 2026
Anthropic Design Production ML Serving Observability System design Practice Aug 10, 2026
Amazon Design Group Purchase Contributions and Settlement System design Practice Aug 10, 2026
Abridge Streaming Transcription Service System design Practice Aug 10, 2026
Adobe Hall of Shifting Tiles Coding Practice Aug 09, 2026
Apple Design an On-Prem Media Transfer for Cloud GPU Training System design Practice Aug 09, 2026
IBM Maximize Consecutive XOR Coding Practice Aug 09, 2026
IBM Count Digit Holes Coding Practice Aug 09, 2026
Adobe Design Infinite Scroll for Mutable Data Low-level design Practice Aug 09, 2026
Adobe Design a Promotion Display Decision Engine Low-level design Practice Aug 09, 2026
Adobe Minimum Numeric Code Transformation Coding Practice Aug 09, 2026
Adobe K-th Ancestor Subtree Preorder Query Coding Practice Aug 09, 2026
Adobe Number-Character Bijective Mapping Coding Practice Aug 09, 2026
Adobe Trapped Characters in a Grid Coding Practice Aug 09, 2026
Zoox Design a Real-Time Fleet Location Display System design Practice Aug 07, 2026
Figma Design Trending Design Files System design Practice Aug 07, 2026
Bloomberg LP Merge Intervals Coding Practice Aug 07, 2026
Bloomberg LP Valid Palindrome II Coding Practice Aug 07, 2026
Anthropic Repair an Agent and Reduce Its Turn Count AI coding Practice Aug 06, 2026
Rippling Design a Frontend News Feed with Offline Virtualization System design Practice Aug 06, 2026
Amazon Design an ML Training and Deployment Platform System design Practice Aug 06, 2026
Pinterest Design Viral Comment Notification Aggregation System design Practice Aug 06, 2026
Infosys Design Offline-First Document Autosave and Synchronization System design Practice Aug 06, 2026
Otter.ai Design a Meeting Bot Allocation and Status Platform System design Practice Aug 06, 2026
Headway Design Vacation Rental Listing Search System design Practice Aug 06, 2026
Headway Fixed-Window Rate Limiter Middleware AI coding Practice Aug 06, 2026
Headway Repair Insurance Eligibility Status Projection AI coding Practice Aug 06, 2026
TikTok Distribution Center Package Allocation Coding Practice Aug 05, 2026
Netflix Design Advertising Order Lifecycle Tracking System design Practice Aug 05, 2026
Netflix Design an Advertising Frequency-Capping Service System design Practice Aug 05, 2026
TikTok Concatenate Digit-wise Sums Coding Practice Aug 05, 2026
TikTok Count 2x2 Submatrices by Black Cells Coding Practice Aug 05, 2026
TikTok Count House Segments After Destruction Coding Practice Aug 05, 2026
TikTok Debugger Breakpoint Actions Coding Practice Aug 05, 2026
TikTok Find All Local Peaks Coding Practice Aug 05, 2026
TikTok Minimum Height Difference Between Distant Peaks Coding Practice Aug 05, 2026
TikTok Minimum Operations for Stepwise Structures Coding Practice Aug 05, 2026
TikTok Rating Level After Changes Coding Practice Aug 05, 2026
TikTok Space Station Shuttle Missions Coding Practice Aug 05, 2026
Apple Design a Multi-Device Photo Storage System System design Practice Aug 05, 2026
JP Morgan Chase Design a Fleet Insurance Registration Platform System design Practice Aug 05, 2026
IMC Weighted LFU Cache Coding Practice Aug 05, 2026
TikTok Count Case-Insensitive Triplets Coding Practice Aug 04, 2026
TikTok Linear Warehouse Drone Delivery Coding Practice Aug 04, 2026
Figma Design Access-Aware Design-File Retrieval and Ranking System design Practice Aug 04, 2026
TikTok Product Minus Sum of Digits Coding Practice Aug 04, 2026
Adyen Design a Campaign Milestone Visitor Reward System design Practice Aug 04, 2026
IMC Chain of Command Coding Practice Aug 04, 2026
IMC Choose Containers Coding Practice Aug 04, 2026
HSBC Minimum Satellite Data Transfer Iterations Coding Practice Aug 03, 2026
HSBC Organization Reputation After Employee Departures Coding Practice Aug 03, 2026
DoorDash Design a Downstream-Service Alert Notification System System design Practice Aug 03, 2026
Anthropic Design a Prompt Playground System design Practice Aug 03, 2026
Amazon Repair the Wallet Loan Marketplace AI coding Practice Aug 03, 2026
Gusto Design a Restaurant Staff Scheduling System System design Practice Aug 03, 2026
HSBC Remove Vowels from a String Coding Practice Aug 03, 2026
Infosys Count Valid A-B-C Sequences Under a Modulo-Four Rule Coding Practice Aug 02, 2026
Infosys Maximum Product of a Strictly Increasing Contiguous Subarray Coding Practice Aug 02, 2026
Infosys Minimum Cost to Assign Candidates to Two Cities Coding Practice Aug 02, 2026
OpenAI Design a Declarative Infrastructure Orchestrator System design Practice Aug 02, 2026
Baseten Build a Durable Single-Server Key-Value Store AI coding Practice Aug 02, 2026
Baseten Parallelize API Calls with a Thread Pool AI coding Practice Aug 02, 2026
Asana Design a Rectangular Jigsaw Puzzle Low-level design Practice Aug 02, 2026
Decagon Design a Multi-Tenant AI Gateway System design Practice Aug 01, 2026
Scale AI Design an Embedding and Classification API System design Practice Aug 01, 2026
Apple Design an Online Voting Service System design Practice Aug 01, 2026
Scale AI Build a CSV-to-JSON LLM Categorization Service AI coding Practice Aug 01, 2026
Adobe Minimum Snapshots for a Version Tree Coding Practice Jul 31, 2026
Superhuman Reverse a Singly Linked List Coding Practice Jul 31, 2026
Superhuman Recover a Tree from Preorder Depth Encoding Coding Practice Jul 31, 2026
Superhuman Deep Copy a Singly Linked List Coding Practice Jul 31, 2026
Superhuman Deep Copy a Random-Pointer List Coding Practice Jul 31, 2026
Chicago Trading Company Design a Pre-Trade Risk Checking System System design Practice Jul 31, 2026
Plaid Design an Embedded Pay-by-Bank Checkout System design Practice Jul 31, 2026
OpenAI Repair a Deployed Django Rate Limiter AI coding Practice Jul 31, 2026
Microsoft Maximum Score with Prime Jumps Coding Practice Jul 30, 2026
Visa Connected Groups Coding Practice Jul 30, 2026
Visa Perfect Substrings Coding Practice Jul 30, 2026
Oracle Alphabetically Maximum Substring Coding Practice Jul 30, 2026
StackAdapt Nested Recipe Inventory Manager Coding Practice Jul 30, 2026
Snowflake Distributed Tree Counting State Machine Coding Practice Jul 30, 2026
Snowflake Maximum Number of Events That Can Be Attended Coding Practice Jul 30, 2026
Amazon Single Element in a Sorted Array Coding Practice Jul 30, 2026
eBay K Smallest Elements from Sorted Arrays Coding Practice Jul 30, 2026
eBay Single-Pass Search in a Rotated Sorted Array Coding Practice Jul 30, 2026
Opendoor Finite Same-Origin Web Crawler Coding Practice Jul 30, 2026
Oracle Enumerate Right-and-Down Matrix Paths Coding Practice Jul 30, 2026
Oracle Maximize Movie Ratings Without Consecutive Skips Coding Practice Jul 30, 2026
Databricks Key-Value Store with Hit Counter Coding Practice Jul 30, 2026
Oracle Best Time to Buy and Sell Stock Coding Practice Jul 30, 2026
IBM String-Pair Frequency Similarity Coding Practice Jul 30, 2026
Pinterest / Amazon / Zoom / Goldman Sachs Design a Following News Feed Service System design Practice Jul 30, 2026
Opendoor Map-Based Home Search Backend System design Practice Jul 30, 2026
Databricks / Highspot Music Playlist System System design Practice Jul 30, 2026
Susquehanna International Group (SIG) Design a Cash Register with Inventory and Profit Tracking Low-level design Practice Jul 30, 2026
Amazon Design a Database Partition Split-and-Merge Manager Low-level design Practice Jul 30, 2026
Walmart Design a Marketplace Product Catalog Platform System design Practice Jul 30, 2026
Amazon Design and Implement a Streaming Log Handler Low-level design Practice Jul 30, 2026
DoorDash Design a Three-Day Charity Event System System design Practice Jul 30, 2026
Mercury Insurance Build a Python CRUD API AI coding Practice Jul 30, 2026
Google Linked List Cycle Entry Node Coding Practice Jul 29, 2026
Cognitiv Word Search Coding Practice Jul 29, 2026
Reddit Chatter Message Window Coding Practice Jul 29, 2026
Amazon Count the Number of Complete Components Coding Practice Jul 29, 2026
Amazon Cousins in Binary Tree II Coding Practice Jul 29, 2026
Squarepoint Evaluating Circuit Expressions Coding Practice Jul 29, 2026
Rippling Filter and Sort Scheduled Tasks Coding Practice Jul 29, 2026
Google Longest Subarray with Sum at Most K Coding Practice Jul 29, 2026
Google Maximum Sum Path Between Two Leaf Nodes Coding Practice Jul 29, 2026
Amazon Minimum Operations to Make an Array Continuous Coding Practice Jul 29, 2026
Netflix Movie Billboard Rotation Coding Practice Jul 29, 2026
Airbnb Recipe Management System Coding Practice Jul 29, 2026
Amazon Vertical Order Traversal of a Binary Tree Coding Practice Jul 29, 2026
Databricks Bookstore Batch Book-Price API System design Practice Jul 29, 2026
Rippling Design an Exact-Room Hotel Reservation System System design Practice Jul 29, 2026
Amazon Design Offline Reading-Progress Synchronization System design Practice Jul 29, 2026
Databricks WAL-Backed Batched Log-Writing System System design Practice Jul 29, 2026
Databricks / ZipRecruiter Design a Locking Key-Value Store with Batch Writes Low-level design Practice Jul 29, 2026
Databricks Design a WAL-Backed Batch Log Writer Low-level design Practice Jul 29, 2026
Bilt Rewards Configurable Reward Points Service System design Practice Jul 29, 2026
Remitly IP Address Filtering Service System design Practice Jul 29, 2026
Harness Streaming Ingredient Dishes Coding Practice Jul 28, 2026
Oracle Add One to a Number Represented as Digits Coding Practice Jul 28, 2026
Oracle Top K Frequent Elements with Larger-Value Tie Break Coding Practice Jul 28, 2026
Virtu Financial Profit Analysis Coding Practice Jul 28, 2026
Virtu Financial Banking Transaction Exceptions Coding Practice Jul 28, 2026
Virtu Financial FIX Message Reconciliation Coding Practice Jul 28, 2026
Amazon HTTP Request Redirection Coding Practice Jul 28, 2026
Google Split a Log Outside Quotes Coding Practice Jul 28, 2026
Stripe Group Linked Merchant Records Coding Practice Jul 28, 2026
Apple Insert Interval Coding Practice Jul 28, 2026
Google Decode String Coding Practice Jul 28, 2026
Lyft Minimum Workers with Job Assignments Coding Practice Jul 28, 2026
Databricks Blocking Keyed Cache with Waiting Readers Coding Practice Jul 28, 2026
Google Phone Keypad Letter Combinations Coding Practice Jul 28, 2026
Google Count Prefix Matches in a Sorted Array Coding Practice Jul 28, 2026
Uber Minimum Refueling Stops Coding Practice Jul 28, 2026
OpenAI Segmented Durable Key-Value Store Coding Practice Jul 28, 2026
Cresta Particle Moves to Target Coding Practice Jul 28, 2026
Cresta Top Three Companies by Profit Coding Practice Jul 28, 2026
Cresta Rightward Bacteria Consumption Coding Practice Jul 28, 2026
Google Distributed Quoted-Log Tokenization System design Practice Jul 28, 2026
Lyft Donation Platform System design Practice Jul 28, 2026
Uber Rolling Stock Price Alert System System design Practice Jul 28, 2026
Bloomberg LP Refactor a Cache for Pluggable Eviction Policies Low-level design Practice Jul 28, 2026
Wells Fargo Longest Subsequence That Is a Substring Coding Practice Jul 28, 2026
Wells Fargo Overloaded Game Account Inventories SQL Practice Jul 28, 2026
Spotnana Optimal Card Game Score Coding Practice Jul 27, 2026
Zomato / Eternal Maximum Production Within Power Coding Practice Jul 27, 2026
Zomato / Eternal Rearrange Songs by Author Coding Practice Jul 27, 2026
Kikoff JSON Identity Verification Coding Practice Jul 27, 2026
The Allen Institute for AI Streaming Step Progress Hierarchy Coding Practice Jul 27, 2026
Airbnb Parcel Event Tracking Coding Practice Jul 27, 2026
Apple Group Transitive String Aliases Coding Practice Jul 27, 2026
Nooks Majority Labels over Audio Intervals Coding Practice Jul 27, 2026
Coinbase In-Memory Database Coding Practice Jul 27, 2026
Shopify Deterministic Secret Santa Assignment Coding Practice Jul 27, 2026
OpenAI Durable String Key-Value Store Coding Practice Jul 27, 2026
Confluent Match a Variadic Function Signature Coding Practice Jul 27, 2026
Google Ad Score Scheduler With Delay Coding Practice Jul 27, 2026
Google Alternating-Color Binary Tree Roots Coding Practice Jul 27, 2026
Spotnana Minimize Maximum Pilot Workload Coding Practice Jul 27, 2026
Amazon Resolve Task Dependencies Coding Practice Jul 27, 2026
Optiver Design a News Subscription Processing Engine System design Practice Jul 27, 2026
Brex Design a Peer-to-Peer Money Transfer System System design Practice Jul 27, 2026
Distyl AI Design an Iterative Compound-LLM Defense Generator System design Practice Jul 27, 2026
Hudson River Trading Design Shared NFS Read Acceleration System design Practice Jul 27, 2026
Coinbase / Airbnb In-Memory Database AI coding Practice Jul 27, 2026
Airbnb Worker Management, Part 1: Office Registration Coding Practice Jul 26, 2026
Airbnb Worker Management, Part 2: Top Workers Coding Practice Jul 26, 2026
Airbnb Worker Management, Part 3: Promotions and Salary Coding Practice Jul 26, 2026
Stripe Merchant Fraud Risk Scoring Coding Practice Jul 26, 2026
Boston Consulting Group Dynamic Pair Sum Queries Coding Practice Jul 26, 2026
Boston Consulting Group Find a Submatrix Matching a Pattern Coding Practice Jul 26, 2026
Boston Consulting Group Longest Contiguous Character Run Coding Practice Jul 26, 2026
Boston Consulting Group Even-Position Monotonicity Coding Practice Jul 26, 2026
Airbnb Worker Management with Full-Shift Double Pay Coding Practice Jul 26, 2026
Hudson River Trading Count 2x2 Submatrices by Black Cells Coding Practice Jul 26, 2026
Hudson River Trading Cumulative Unique Bytes Coding Practice Jul 26, 2026
Upstart Minimum Absolute Pair Difference Coding Practice Jul 26, 2026
Upstart Lexicographic Word Frequencies Coding Practice Jul 26, 2026
Upstart Sum Multiples of 3, 5, or 7 Below N Coding Practice Jul 26, 2026
Upstart Add Drama to Text Groups Coding Practice Jul 26, 2026
DE Shaw Maximum L1 Distance Between Equal-Length Subarrays Coding Practice Jul 26, 2026
Airbnb Nested List Iterator with Remove Coding Practice Jul 26, 2026
Citadel Limit Order Book Matching Engine Coding Practice Jul 26, 2026
Hudson River Trading Market Data Signal Watcher Coding Practice Jul 26, 2026
Amazon Shortest Distance on a Circular Bus Route Coding Practice Jul 26, 2026
Databricks Design a Durable Local Event Writer System design Practice Jul 26, 2026
Databricks Design a Chat Application Cache Architecture System design Practice Jul 25, 2026
Salesforce Optimal Account Balancing Coding Practice Jul 25, 2026
Google Count Sortable Splits Coding Practice Jul 25, 2026
Pinterest Nested Set Structural Equivalence Coding Practice Jul 25, 2026
TikTok Bubble Explosion Coding Practice Jul 25, 2026
TikTok Reconstruct Landmark Journey Coding Practice Jul 25, 2026
TikTok Reverse the Interior of Vowel-Bounded Words Coding Practice Jul 25, 2026
TikTok Uppercase-Lowercase Difference Coding Practice Jul 25, 2026
Salesforce Longest Increasing Subsequence Coding Practice Jul 24, 2026
Salesforce Maximal Square Coding Practice Jul 24, 2026
MathWorks Beautiful Arrangement Coding Practice Jul 24, 2026
MathWorks Find Minimum Cost to Remove Array Elements Coding Practice Jul 24, 2026
Apple Design Task Manager Coding Practice Jul 24, 2026
Apple Unit Conversion II Coding Practice Jul 24, 2026
Cresta Feature Flag Evaluation Engine Coding Practice Jul 24, 2026
MathWorks Group Shifted Strings Coding Practice Jul 24, 2026
MathWorks Longest Valid Parentheses Coding Practice Jul 24, 2026
LinkedIn / Confluent / Shield AI CI/CD Pipeline Orchestration System System design Practice Jul 24, 2026
Tekion Design a Car Service-Center Booking System System design Practice Jul 24, 2026
MathWorks Design a Product Authentication Platform System design Practice Jul 24, 2026
Shopify Design a Production-Ready URL Cache Service System design Practice Jul 24, 2026
Google Ranked Deals Discovery and Claim Service System design Practice Jul 24, 2026
Capillary Technologies Design a Loyalty-Data Insight Platform System design Practice Jul 24, 2026
Akuna Profitable Project Pairs Coding Practice Jul 23, 2026
Goldman Sachs Validate Binary Search Tree Coding Practice Jul 23, 2026
Visa Signal Pings Coding Practice Jul 23, 2026
OnePay Design a Community Chat Platform System design Practice Jul 23, 2026
Roblox Design a Like/Unlike Service System design Practice Jul 23, 2026
Bloomberg LP Word Break II Coding Practice Jul 22, 2026
Microsoft Binary String Swap Time Coding Practice Jul 22, 2026
Microsoft Minimum Effort Task Schedule Coding Practice Jul 22, 2026
Tekion Longest Balanced Substring After One Swap Coding Practice Jul 22, 2026
Amazon Sort an Array with Rotate and Flip Coding Practice Jul 22, 2026
Akuna Calculate Portfolio Rebalancing Deltas Coding Practice Jul 22, 2026
Akuna Maximum Label Difference in a Connected Component Coding Practice Jul 22, 2026
Akuna Minimize Malware Spread by Removing a Node Coding Practice Jul 22, 2026
TikTok Count Access Code Pairs Coding Practice Jul 22, 2026
TikTok Count Key Changes Coding Practice Jul 22, 2026
TikTok Travel Distance on Scooters Coding Practice Jul 22, 2026
TikTok Validate 3x3 Digit Windows Coding Practice Jul 22, 2026
DRW Last Round for Each Player Coding Practice Jul 22, 2026
DRW Shortest Compressed Length After Removal Coding Practice Jul 22, 2026
Amazon / Goldman Sachs Design a Financial Portfolio Dashboard System design Practice Jul 22, 2026
Databricks Design a Chat Application with Message and Thread Deletion System design Practice Jul 22, 2026
Amazon Loyal Customers Across Two Days Coding Practice Jul 21, 2026
Amazon Smallest Number With a Given Digit Sum Coding Practice Jul 21, 2026
Oracle Merge k Sorted Lists Coding Practice Jul 21, 2026
Amazon Design a Distributed Recurring Workflow Scheduler System design Practice Jul 21, 2026
Amazon Design Music Search, Playlists, and Playback Low-level design Practice Jul 21, 2026
Airbnb Most Frequent Reduced Digit Coding Practice Jul 20, 2026
Airbnb Rectangle Fit Queries Coding Practice Jul 20, 2026
Airbnb Robot Final Direction Coding Practice Jul 20, 2026
Airbnb Robot Inventory Tracking Coding Practice Jul 20, 2026
Akuna Communications Handler Coding Practice Jul 20, 2026
Akuna Maximum K-Star Sum Coding Practice Jul 20, 2026
Microsoft Maximum Pipeline Throughput Coding Practice Jul 20, 2026
Microsoft Maximum Strong Team Subarray Coding Practice Jul 20, 2026
PhonePe Luna and the Colorful Socks Coding Practice Jul 20, 2026
Ramp Design a Real-Time Payment Count Dashboard System design Practice Jul 20, 2026
Meta Design and Implement an In-Memory Tally Service Low-level design Practice Jul 20, 2026
Assort Health Design a Conversational Flight Search and Booking Agent System design Practice Jul 20, 2026
Capital One Sort Every Matrix Border Layer Coding Practice Jul 19, 2026
Waymo Average or Zero Coding Practice Jul 19, 2026
Google Maximum Programmer-Problem Matching Coding Practice Jul 19, 2026
Visa Minimum Score of a Path Between Cities Coding Practice Jul 18, 2026
IDFC Smallest Adjacent Concatenation Coding Practice Jul 18, 2026
IDFC Minimum Cake Cuts Coding Practice Jul 18, 2026
Apple Design a Large JSON Transformation Service System design Practice Jul 18, 2026
Pinterest Design a Real-Time Category Leaderboard System design Practice Jul 18, 2026
Cursor Design and Implement a Pluggable Notification Rate Limiter Low-level design Practice Jul 18, 2026
Goldman Sachs Inherited Role Permissions Coding Practice Jul 17, 2026
Goldman Sachs Root of the Largest Tree Coding Practice Jul 17, 2026
Uber Design a Driver Payout System System design Practice Jul 17, 2026
Microsoft Design a Real-Time Multiplayer Game System design Practice Jul 17, 2026
Adobe Design Network-Backed Search Suggestions Low-level design Practice Jul 17, 2026
Amazon Customer Package Delivery Report SQL Practice Jul 16, 2026
Microsoft Alphabetically Smallest Palindrome Coding Practice Jul 16, 2026
Zomato / Eternal Robot Warehouse Optimization Coding Practice Jul 16, 2026
Google Count Good Numbers Coding Practice Jul 15, 2026
Google Count Element Symbol Decompositions Coding Practice Jul 15, 2026
Google Convert Snake Case to Camel Case Coding Practice Jul 15, 2026
Uber Last Truck to Leave the Lane Coding Practice Jul 15, 2026
Citadel Minimum Image Processing Cost Coding Practice Jul 15, 2026
IBM Count Strictly Increasing Subsequences of Length 3 Coding Practice Jul 15, 2026
Goldman Sachs Alternating Parity Permutations Coding Practice Jul 15, 2026
Arcesium Ordered Payload Release Coding Practice Jul 15, 2026
ByteDance Most Frequent Integer with Smaller Tie-Break Coding Practice Jul 15, 2026
Uber Chain of Command Coding Practice Jul 14, 2026
Waymo Design a Global Small-Image Cache System design Practice Jul 14, 2026
Waymo Design a Matchmaking Service System design Practice Jul 14, 2026
Salesforce / Retool Design a Rental Car Reservation System System design Practice Jul 14, 2026
Salesforce / Slack / Ironclad Design a Third-Party SaaS Integration Platform System design Practice Jul 14, 2026
Sesame Transcript Window Metrics Coding Practice Jul 14, 2026
New Relic Product of Array Except Self Coding Practice Jul 13, 2026
OpenAI CIDR IPv4 Range Iterator Coding Practice Jul 12, 2026
OpenAI IPv4 Forward Iterator Coding Practice Jul 12, 2026
OpenAI IPv4 Reverse Iterator Coding Practice Jul 12, 2026
OpenAI Convert an IPv4 Range to Minimal CIDR Blocks Coding Practice Jul 12, 2026
OpenAI Toy Language Generic Return-Type Inference Coding Practice Jul 12, 2026
OpenAI Count Matching Regions in Two Binary Grids Coding Practice Jul 12, 2026
OpenAI Largest Square Subgrid Under a Sum Limit Coding Practice Jul 12, 2026
OpenAI Backpropagation Through Sort and Median Coding Practice Jul 12, 2026
Anthropic Repair the Bootloader Program Coding Practice Jul 12, 2026
Anthropic Normalize a DNS Domain Name Coding Practice Jul 12, 2026
Anthropic Worker Management, Part 1: Office Registration Coding Practice Jul 12, 2026
Anthropic Worker Management, Part 2: Top Workers Coding Practice Jul 12, 2026
Anthropic Worker Management, Part 3: Promotions and Salary Coding Practice Jul 12, 2026
Anthropic Worker Management, Part 4: Double-Paid Intervals Coding Practice Jul 12, 2026
Anthropic Cloud Storage Compression and Decompression Coding Practice Jul 12, 2026
Anthropic In-Memory Database Historical Lookup Coding Practice Jul 12, 2026
Anthropic Banking Pending Transfer Acceptance Coding Practice Jul 12, 2026
Anthropic Cloud Storage File Versioning Coding Practice Jul 12, 2026
Anthropic Cloud Storage Prefix Trash and Restore Coding Practice Jul 12, 2026
Amazon Number of Islands II Coding Practice Jul 12, 2026
Amazon Maximum Sum of Heights Coding Practice Jul 12, 2026
Amazon Longest Palindromic Subsequence Coding Practice Jul 12, 2026
Amazon Group Anagrams Coding Practice Jul 12, 2026
Amazon Maximal Square Coding Practice Jul 12, 2026
Amazon Sliding Window Maximum Coding Practice Jul 12, 2026
Agoda 3Sum Coding Practice Jul 12, 2026
JP Morgan Bitwise XOR Subsequences Coding Practice Jul 12, 2026
TikTok Obstacle Placement Queries Coding Practice Jul 12, 2026
Upstart Coordinate Bounding Box Coding Practice Jul 12, 2026
Upstart Increase Exclamations and Convert Periods Coding Practice Jul 12, 2026
Upstart Interleave Equal-Length Strings by Column Coding Practice Jul 12, 2026
Upstart Scale Ingredient Quantities Coding Practice Jul 12, 2026
IDFC Find All People With Secret Coding Practice Jul 12, 2026
DRW Doctor Appointment Slot Assignment Coding Practice Jul 12, 2026
DRW Maximum Even-Sum Neighboring Pairs Coding Practice Jul 12, 2026
DRW Minimize Maximum Group Difference Coding Practice Jul 12, 2026
Goldman Sachs Cheapest Flights Within K Stops Coding Practice Jul 12, 2026
Goldman Sachs Word Ladder Coding Practice Jul 12, 2026
Rippling Camel Cards Coding Practice Jul 12, 2026
Rippling Article Vote Tracker Coding Practice Jul 12, 2026
Rippling Employee Resource Access Management Coding Practice Jul 12, 2026
Rippling Limit an Organization Tree's Height Coding Practice Jul 12, 2026
Rippling Distributed System Recovery Coding Practice Jul 12, 2026
Rippling Server Upgrade Planning Coding Practice Jul 12, 2026
Rippling Shortest Substring Coding Practice Jul 12, 2026
Rippling Lexicographically Minimum Stack Encryption Coding Practice Jul 12, 2026
Rippling Minimum Account Settlements Coding Practice Jul 12, 2026
Rippling Matrix Region Sum Coding Practice Jul 12, 2026
Rippling Maximum XOR Elimination Score Coding Practice Jul 12, 2026
Rippling Prime Tree City Labelings Coding Practice Jul 12, 2026
Zomato / Eternal Jump Game IV Coding Practice Jul 12, 2026
IndiaMART Reverse a String Coding Practice Jul 12, 2026
Moody's Longest Subarray with At Most Two Distinct Values Coding Practice Jul 12, 2026
MulticoreWare Minimum Coin Change Coding Practice Jul 12, 2026

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