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HackerRank - Advance Your Coding Through Problem Solving

This is very interesting proposition in the "learn to code" e-learning field. HackerRank uses a variety of methods to reinforce learning: hands-on problem solving through trial and error, gamification with points, ranking and awards and constructive competition through contests and hackathons, all combined combined into a single package.

HackerRank's mission objectives are to help students improve their coding, make personal connections through interest sharing and team working, and, for high achievers, even the opportunity of job offers. 
There is no restriction as to where you start or what you can do concurrently and students can jump in from one of three potential entry points, depending on their level of experience in programming.

full article on i-programmer

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