Data Structures Solutions (DSA) from HackerRank

 

We’ve compiled a comprehensive list of data structures (DSA) problems and solutions from HackerRank, available in both Java and Python. This collection covers topics such as arrays, linked lists, stacks, queues, trees, graphs, hashmaps, heaps, sorting algorithms, dynamic programming, and more.

5,523 DSA problems solved — 352 developers got the job 🙌

We have developed CodeRankGPT. A tool powered by GPT-4 that helps you solve HackerRank Data Structures problems during your coding interview. In real-time and absolutely undetectable 🥷

Proven in Top Companies

  • ⭐ We've helped 3000+ developers get hired.
  • 🔥 Increase your chances of getting hired by 500%.
  • 💻 Supports 30+ languages and frameworks.
  • ✅ More than 9,000+ DSA questions solved.

Browse HackerRank coding questions and solutions by category.

We’ve classified each HackerRank problem and its solution—across Python, Java, C++, SQL, and more—to help you better prepare for your next coding test.

Why CodeRankGPT matters?

AI is changing the world, and a tool like CodeRankGPT can give you a clear advantage in Java coding tests, helping you stand out when applying for jobs. It’s here now, and other candidates might be using it to get ahead and win the job.

Use CodeRankGPT and don't fall behind. Think of it as a helpful option when you’re stuck, not a must-use.

Stay ahead or fall behind— other candidates are already deciding 🧐

Built on Unicorn Platform