Java, Python, SQL, C++, and JavaScript programming skills are most in demand in the workplace, says the HackerRank developer skills report. When it comes to the programming language skills employers ...

A self-challenge started in 2025 to solve 5000 problems on AI (HackerRank), Data Structures & Algorithms (LeetCode, GeeksforGeeks), and SQL database problems. Solutions are in Java, Python, JavaScript ...