Practice smart by starting with easier problems to build confidence, recognizing common coding patterns, and managing your time well during tests. Focus on making your code run fast and fixing it when ...

Overview: Consistent SQL practice across varied platforms builds real job-ready confidence.Guided lessons help beginners, while timed challenges sharpen intervi ...

HackerRank is a social platform for fun coding challenges that launched at TechCrunch SF Disrupt in 2012. It grew out of Interviewstreet, a technical recruiting platform that’s being used by companies ...

Everybody wants to hire data scientists — or at least that’s what it feels like these days. Problem is, data science isn’t just a basic set of skills, but an interdisciplinary skill set that attracts ...