14 Coding Challenges to Help You Train Your Brain

Coding is a lot about creativity, your ability to come up with new and interesting ideas; but sometimes, due to the large amount of time spent tackling common problems, we forget about creativity. I’m not quite sure whether that is the reason coding challenges were made, but they certainly help with the part where you need to think of your own stuff to program.

http://codecondo.com/coding-challenges/