CodeChef | CodeChef: Practical coding for everyone

hackerrank is the market-leading technical assessment and remote interview solution for hiring developers. learn how to hire technical talent from anywhere!

Join the world's most widely adopted, AI-powered developer platform where millions of developers, businesses, and the largest open source community build software that advances humanity.

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well organized and easy to understand web building tutorials with lots of examples of how to use html, css, javascript, sql, python, php, bootstrap, java, xml and more.

evaluate candidates quickly, affordably, and accurately for assessments, interviews, and take-home projects. prepare for interviews on the #1 platform for 1m+ developers that want to level up their careers.

Your All-in-One Learning Portal. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions.

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Stack Overflow | The World’s Largest Online Community for Developers