hackerrank / CodeChef

Solutions to HackerRank and CodeChef problems that were written in Java & Python

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

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