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Programming competitions and contests, programming community.
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A computer science portal for geeks.
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Learn to code. Eat Bananas. Save the World.
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py.CheckiO - Python practice online. Improve your coding skills by solving coding challenges and exercises online with your friends in a fun way. Exchanges experience with other users online through fun coding activities.
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URI Online Judge is a project developed for you! Our goal is to provide a platform where you can learn, practice and sharpen your skills in algorithms and programming languages.
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Boost your full stack development skills with free interactive coding quizzes and programming games. Practice coding online with fun challenges.
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Learn JavaScript, React and CSS with fun puzzles and challenges.