Data Structures & Algorithms

Core DSA questions every developer should be able to discuss — arrays, hashmaps, trees, recursion and complexity.

9 Questions

6 Easy

3 Medium

Pro Tips

Quick reminders before you dive into the questions.

Always state your assumptions and the brute-force solution first, then optimize.
Discuss time and space complexity for every approach.
Practice patterns: two pointers, sliding window, BFS/DFS, dynamic programming.

Questions & Answers

Move on to the next topic or polish your GitHub profile while the concepts are fresh.