khushibhadange / blind75-dsa-questions

Dive into Blind75 LeetCode Questions with comprehensive Java approaches and solutions. Challenge yourself, explore solutions, correct mistakes, and elevate your skills for coding interviews!

Blind75 Leetcode DSA Questions

Curated List of Top 75 LeetCode

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Problem	Difficulty	Category	Tags	LeetCode
[Two Sum]		Array	Array, Hash Table	🔗
[Best Time to Buy and Sell Stock]		Array	Array, Dynamic Programming	🔗
[Contains Duplicate]		Array	Array, Hash Table, Sorting	🔗
[Product of Array Except Self]		Array	Array, Prefix Sum	🔗
[Maximum Subarray]		Array	Array, Divide and Conquer, Dynamic Programming	🔗
[Maximum Product Subarray]		Array	Array, Dynamic Programming	🔗
[Find Minimum in Rotated Sorted Array]		Array	Array, Binary Search	🔗
[Search in Rotated Sorted Array]		Array	Array, Binary Search	🔗
[3Sum]		Array	Array, Two Pointers, Sorting	🔗
[Container With Most Water]		Array	Array, Two Pointers, Greedy	🔗
[Sum of Two Integers]		Binary	Math, Bit Manipulation	🔗
[Number of 1 Bits]		Binary	Divide and Conquer, Bit Manipulation	🔗
[Counting Bits]		Binary	Dynamic Programming, Bit Manipulation	🔗
[Missing Number]		Binary	Array, Hash Table, Math, Binary Search, Bit Manipulation, Sorting	🔗
[Reverse Bits]		Binary	Divide and Conquer, Bit Manipulation	🔗
[Climbing Stairs]		Dynamic Programming	Math, Dynamic Programming, Memorization	🔗
[Coin Change]		Dynamic Programming	Array, Dynamic Programming, Breadth-First-Search	🔗
[Longest Increasing Subsequence]		Dynamic Programming	Array, Binary Search, Dynamic Programming	🔗
[Longest Common Subsequence]		Dynamic Programming	String, Dynamic Programming	🔗
[Word Break Problem]		Dynamic Programming	Array, Hash Table, String, Dynamic Programming, Trie, Memorization	🔗
[Combination Sum IV]		Dynamic Programming	Array, Dynamic Programming	🔗
[House Robber]		Dynamic Programming	Array, Dynamic Programming	🔗
[House Robber II]		Dynamic Programming	Array, Dynamic Programming	🔗
[Decode Ways]		Dynamic Programming	String, Dynamic Programming	🔗
[Unique Paths]		Dynamic Programming	Math, Dynamic Programming, Combinatorics	🔗
[Jump Game]		Dynamic Programming	Array, Dynamic Programming, Greedy	🔗
[Clone Graph]		Graph	Hash Table, Depth-First-Search, Breadth-First-Search, Graph	🔗
[Course Schedule]		Graph	Depth-First-Search, Breadth-First-Search, Graph, Topological Sort	🔗
[Pacific Atlantic Water Flow]		Graph	Array, Depth-First-Search, Breadth-First-Search, Matrix	🔗
[Number of Islands]		Graph	Array, Depth-First-Search, Breadth-First-Search, Union Find, Matrix	🔗
[Longest Consecutive Sequence]		Graph	Array, Hash Table, Union Find	🔗
[Alien Dictionary (Leetcode Premium)]		Graph		🔗
[Graph Valid Tree (Leetcode Premium)]		Graph		🔗
[Number of Connected Components in an Undirected Graph (Leetcode Premium)]		Graph		🔗
[Insert Interval]		Interval	Array	🔗
[Merge Intervals]		Interval	Array, Sorting	🔗
[Non-overlapping Intervals]		Interval	Array, Dynamic Programming, Greedy, Sorting	🔗
[Meeting Rooms (Leetcode Premium)]		Interval		🔗
[Meeting Rooms II (Leetcode Premium)]		Interval		🔗
[Reverse a Linked List]		Linked List	Linked List, Recursion	🔗
[Detect Cycle in a Linked List]		Linked List	Hash Table, Linked List, Two Pointers	🔗
[Merge Two Sorted Lists]		Linked List	Linked List, Recursion	🔗
[Merge K Sorted Lists]		Linked List	Linked List, Divide and Conquer, Heap(Priority Queue), Merge Sort	🔗
[Remove Nth Node From End Of List]		Linked List	Linked List, Two Pointers	🔗
[Reorder List]		Linked List	Linked List, Two Pointers, Stack, Recursion	🔗
[Set Matrix Zeroes]		Matrix	Array, Hash Table, Matrix	🔗
[Spiral Matrix]		Matrix	Array, Matrix, Simulation	🔗
[Rotate Image]		Matrix	Array, Math, Matrix	🔗
[Word Search]		Matrix	Array, Backtracking, Matrix	🔗
[Longest Substring Without Repeating Characters]		String	Hash Table, String, Sliding Window	🔗
[Longest Repeating Character Replacement]		String	Hash Table, String, Sliding Window	🔗
[Minimum Window Substring]		String	Hash Table, String, Sliding Window	🔗
[Valid Anagram]		String	Hash Table, String, Sorting	🔗
[Group Anagrams]		String	Array, Hash Table, String, Sorting	🔗
[Valid Parentheses]		String	String, Stack	🔗
[Valid Palindrome]		String	Two Pointer, String	🔗
[Longest Palindromic Substring]		String	String, Dynamic Programming	🔗
[Palindromic Substrings]		String	String, Dynamic Programming	🔗
[Encode and Decode Strings (Leetcode Premium)]		String		🔗
[Maximum Depth of Binary Tree]		Tree	Tree, Depth-First-Search, Breadth-First-Search, Binary Tree	🔗
[Same Trees]		Tree	Tree, Depth-First-Search, Breadth-First-Search, Binary Tree	🔗
[Invert/Flip Binary Tree]		Tree	Depth-First-Search, Breadth-First-Search, Binary Tree	🔗
[Binary Tree Maximum Path Sum]		Tree	Dynamic Programming, Tree, Depth-First-Search, Binary Tree	🔗
[Binary Tree Level Order Traversal]		Tree	Tree, Breadth-First-Search, Binary Tree	🔗
[Serialize and Deserialize Binary Tree]		Tree	String, Tree, Depth-First-Seaarch, Breadth-First-Search, Design, Binary Tree	🔗
[Subtree of Another Tree]		Tree	Tree, Depth-First-Search, String Matching, Binary Tree, Hash Function	🔗
[Construct Binary Tree from Preorder and Inorder Traversal]		Tree	Array, Hash Table, Divide and Conquer, Tree, Binary Tree	🔗
[Validate Binary Search Tree]		Tree	Tree, Depth-First-Search, Binary Search Tree, Binary Tree	🔗
[Kth Smallest Element in a BST]		Tree	Tree, Depth-First-Search, Binary Search Tree, Binary Tree	🔗
[Lowest Common Ancestor of BST]		Tree	Tree, Depth-First-Search, Binary Search Tree, Binary Tree	🔗
[Implement Trie (Prefix Tree)]		Tree	Hash Table, String, Design, Trie	🔗
[Add and Search Word]		Tree	String, Depth-First Search, Design, Trie	🔗
[Word Search II]		Tree	Array, String, Backtracking, Trie, Matrix	🔗
[Merge K Sorted Lists]		Heap	Linked List, Divide and Conquer, Heap(Priority Queue), Merge Sort	🔗
[Top K Frequent Elements]		Heap	Array, Hash Table, Divide and Conquer, Bucket Sort, Counting	🔗
[Find Median from Data Stream]		Heap	Two Pointers, Design, Sorting, Heap, Data Stream	🔗