hackerrank / CodeChef Solutions to HackerRank and CodeChef problems that were written in Java & Python. See also my profiles: HackerRank profile CodeChef profile HackerRank Problems Searching Problems Pairs Find the Median Lonely Integer Missing Numbers Service Lane Flowers Encryption Machine Learning Problems Basic Statistics Warmup Laptop Battery Life Dynamic Programming Problems Stock Maximize Candies Play Game Math Problems BDay Gift Codesprint 5 Is Fibo Matrix Tracing Special Multiple 20/20 Hack November 2013 Utopian Tree BDay Gift Power of Large Numbers 20/20 Hack February 2014 Sherlock and Watson Make it Anagram Cutting Boards Bike Racers Library Query 20/20 Hack March 2014 Sherlock and Squares Manasa loves Math XORing Ninja The Indian Job Traveling Salesman in a Grid Weekly Challenges - Week 1 Maximizing XOR Volleyball Match Randomness BST Maintenance Weekly Challenges - Week 4 Palindrome Index Algorithmic Crush Lucy and Flowers Roy and Alpha-Beta Trees Weekly Challenges - Week 7 Die Hard 3 Chocolate in Box String Function Calculation The crazy helix Multiple 101 Hacks Filling Jars Harry Potter and the Floating Rocks Cube Summation Cut the Sticks Sherlock and Pairs Service Lane Dorsey Thief HackerRank ProjectEuler+ #1 #2 CodeChef Chef and Digit Jumps Chef and Subarray Forgot Password Guessing Game Bytelandian Gold Coins Little Elephant and Strings Racing Horses Subanagrams Copy-Paste SumQueries Count Substrings Dish Owner Chef and Frogs Reach the Point Chef and Left-Right Fun with Rotation and many more...