Some of the solutions of the challenges on http://www.hackerrank.com
Currently solved challenges:
- A Very Big Sum
- Diagonal Difference
- Plus Minus
- Simple Array Sum
- Solve Me First
- Staircase
- Time Conversion
- Angry Professor
- Sherlock and The Beast
- Utopian Tree
- Find digits
- Sherlock and squares
- Service Lane
- Cut the sticks
- Chocolate Feast
- Cavity Map
- Library Fine
- ACM ICPC Team
- Extra Long Factorials
- Taum and B'day
- The Time in Words
- Modified Kaprekar Numbers
- Encryption
- [Algo] Matrix Rotation
- Alternating Characters
- Angry children
- Changing Bits
- Counter Game
- Filling jars
- Game of thrones 1
- Halloween party
- Is Fibo
- Maximizing XOR
- The Love-Letter Mystery
- Insertion Sort - Part 1
- Insertion Sort - Part 2
- Correctness and the Loop invariant
- Running time of Algorithms
- Quick Sort 1 - Partition
- Find HackerRank
- HackerRank Language
- HackerRank Tweets
- IP Address Validation
- Saying Hi
- Split Phone Numbers
- Utopian Identification Number
- Detecting Valid Latitude Longitude Pairs
- Valid PAN Numbers
- Arithmetic Operations
- A personalized echo
- Comparing Numbers
- Compute the Average
- Getting started with conditionals
- Looping and Skipping
- Looping with numbers
- More on conditionals
- The world of numbers
- The cut command #1
- The cut command #2
- The cut command #3
- The cut command #4
- The cut command #5
- The cut command #6
- The cut command #7
- The cut command #8
- The cut command #9
- The head of a text file #1
- The head of a text file #2
- The middle of a text file
- The tail of a text file #1
- The tail of a text file #2
- The 'Tr' command #1
- The 'Tr' command #2
- The 'Tr' command #3
- Java 1D Array (Easy)
- Java 1D Array (Hard) 2 solutions provided
- Java Stack
- Java Hashset
- Java Arraylist