Project Euler for homework

Does anyone know of a project euler-like website for homework problems?

I work on long term projects too much, sometimes it's refreshing to have a couple easily accomplished brain teasers.

If not, maybe we could make a quick list of the most unique/challenging/fun homework puzzles?
www.hackerrank.com
Mmmm I dig it- obviously if anyone hasn't seen it, https://projecteuler.net/ was the original reference
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This link might be useful:

http://www.cplusplus.com/forum/beginner/175575/
https://www.reddit.com/r/dailyprogrammer is for programming challenges of various difficulties.
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