I’m a believer in learning by doing. Programming exercises are a useful tool to practice and improve your coding skills. After all, practice makes one, if not perfect, at least pretty darn good. (Yes, I know competitive programming differs from real-world programming.)
Below is a list of high-quality sites for programming exercises. This is not a comprehensive list since there are countless sites dedicated to coding exercises.
Nevertheless, these 12 sites alone could keep you busy for quite a while.
- Project Euler
- Reddit /r/dailyprogrammer
- Top Coder
- Code Forces
Three honorable mentions
These three are not full-blown automated judge sites or competitive sites, but they are certainly worth mentioning as valuable resources for problem and project ideas.
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