suketsingh / coding-challenges

Coding challenges from Codility, CodeEval, mostly written in Java

Coding challenges

CodeEval

Easy

• Fizz Buzz

• String Mask

• Chardonnay Or Cabernet

• File Size

• Sum of Digits

• Clean Up The Words

• Bit Positions

• Set Intersection

• Fibonacci Series

• Sum of Primes

• Reverse Words

• Swap Case

• Find a Writer

• Beautiful Strings

• Multiply Lists

• Capitalize Words

• Lettercase Percentage Ratio

• Lowest Unique Number

• Longest Words

• Multiples of a Number

Moderate

• Longest Lines

• Detecting Cycles

• Lowest Common Ancestor

• Sum Of Integers

• First Non-Repeated Character

• Remove Characters

• Beat or Bit

• Cash Register

• Meet Comb Sort

• Suggest Groups

• Trailing String

• Car Race

• Endianness

• Number Of Ones

• Data recovery

• Number Pairs

• Meet Cocktail Sort

• Organizational Hierarchy

• Decode Numbers

• Try To Solve It

• Alternative Reality

• Interrupted Bubble Sort

• Column Names

• Number Operations

• Stack Implementation

• Decimal To Binary

• Email Validation

• Double Trouble

• Minimum Coins

• Locks

• Pangrams

• Find a Square

• Broken LCD

• Card Number Validation

• Overlapping Rectangles

• String Rotation

• Valid Parentheses

• MTH To Last Element

• Array Absurdity

• Reverse Groups

Hard

• String Permutations

• Repeated Substring

• Climbing Stairs

• String List

• String Searching

Codility

• Binary sum of ones

• Max element array

Prerequisites

• Java 8

• Maven

Coding Sites

• Topcoder

• Codeeval

• Hackerrank

• Codility

• GeeksforGeeks

• Project Euler

• Hacker Earth

• Code Forces

• Hired in Tech

Learning

• Coursera

• Udacity

• edX

• Udemy

• Khan Academy

• MIT