Programming problems and Competitions :: HackerRank

CounterCode 2015

The War has begun, and Code will flow!

Starts in



Complete 8 challenges on Algorithmic Programming within 24 hours.
Practice within our coding environment.


Starts -
Ends -


This contest is open to all countries, and to both students and working professionals.

Code plagiarism results in disqualification.


Prize 1

Rank 1

Apple iPhone 6

Prize 2

Rank 2

Sony PS4 500GB Console

Prize 3

Rank 3

Bose SoundLink Bluetooth Headphones

Rank 4

Fitbit Charge

Rank 5

My Passport 1 TB HardDisk

Prize 6

Rank 1 - 25th

HackerRank T-Shirts


All participants completing one challenge will receive $100 AWS credits + $780 worth of online courses and business support.


Meet Our Past Champions


Rank #2 ZenHacks

"By competing, you’ll do really well in all standard interview questions. You won’t need to memorize questions & you’ll be able to think on the fly."


Rank #4 SpringSprint

"How far you get depends on your dedication... Practicing with friends can be more productive than training in isolation because of shared insights. "


Rank #1 SpringSprint

"Solve whatever you can and have fun. Afterwards, think about how to solve the problems you didn't get. That way you'll do better next time!"

About HackerRank

Competitive programming challenges and contests.

Hone your coding skills on hundreds of computer science challenges and code your way to the top. HackerRank is built for programmers, by programmers, to be engaging and fun no matter your background or skill level.