Live Code Challenges?

[IndigoIdentity]

I have recently found https://codegolf.stackexchange.com/ which has been consuming a bit of my time these days.

Could anyone suggest any similar websites or applications that are available out there that pit users against each other to solve coding relating questions or challenges?

 

[cguy]

Topcoder is very prominent in the competitive programming space. If you really want a coding challenge though, try a career in algorithmic trading.

 

[gkm]

You can also try:
https://www.hackerearth.com/practice/algorithms/searching/linear-search/tutorial/
https://www.hackerrank.com/
https://projecteuler.net/