AI-generated algorithm problems · free · solve in-browser
Your Progress
Sign in to track progress
128+ problems available
| # | Status | Topic | Est. Time | ||
|---|---|---|---|---|---|
| 1 | Todo | General | Medium | ~25 min | |
| 2 | Todo | Array | Medium | ~25 min | |
| 3 | Todo | General | Hard | ~40 min | |
| 4 | Todo | Tree | Hard | ~40 min | |
| 5 | Todo | General | Hard | ~40 min | |
| 6 | Todo | Strings | Medium | ~25 min | |
| 7 | Todo | General | Medium | ~25 min | |
| 8 | Todo | General | Medium | ~25 min | |
| 9 | Todo | Tree | Easy | ~15 min | |
| 10 | Todo | General | Medium | ~25 min | |
| 11 | Todo | General | Medium | ~25 min | |
| 12 | Todo | Array | Easy | ~15 min | |
| 13 | Todo | Array | Easy | ~15 min | |
| 14 | Todo | Array | Medium | ~25 min | |
| 15 | Todo | Linked List | Medium | ~25 min | |
| 16 | Todo | Stack | Hard | ~40 min | |
| 17 | Todo | Stack | Medium | ~25 min | |
| 18 | Todo | Stack | Medium | ~25 min | |
| 19 | Todo | Stack | Easy | ~15 min | |
| 20 | Todo | Array | Easy | ~15 min | |
| 21 | Todo | General | Hard | ~40 min | |
| 22 | Todo | General | Medium | ~25 min | |
| 23 | Todo | General | Medium | ~25 min | |
| 24 | Todo | Linked List | Medium | ~25 min | |
| 25 | Todo | Array | Medium | ~25 min | |
| 26 | Locked | ████████████████████ | General | Medium | ~25 min |
5 private problems hidden — make yours public to help the community | |||||
1–25 of 128
SkillAI Hub offers 100+ free AI-generated coding challenges — a LeetCode-style alternative for practising data structures and algorithms. Every challenge comes with worked examples, an in-browser code editor, and instant test-case feedback, so you can go from reading the problem to running your solution without leaving the page. Filter challenges by topic (arrays, strings, hash maps, trees, graphs, dynamic programming) or by Easy, Medium, and Hard difficulty to match your current level.
Sign in to track which coding challenges you've solved or attempted, maintain a daily streak, and try the Daily Challenge — a fresh problem everyone gets each day. Need something specific? Generate a brand-new algorithm problem on demand for any topic and difficulty with our AI problem generator.
Yes. You can browse and solve our library of AI-generated algorithm problems for free, with no signup required to start. Generating brand-new custom problems on demand is a Plus feature.
Problems are generated by AI, so the catalogue keeps growing and you can create a fresh problem tailored to a specific topic or difficulty whenever you want. Each problem comes with worked examples, an in-browser code editor, and instant feedback.
Arrays, strings, hash maps, stacks, queues, linked lists, trees, graphs, heaps, two pointers, binary search, dynamic programming, backtracking, sorting, and math — plus general mixed problems.
Easy problems focus on a single core idea (~15 minutes). Medium problems combine concepts and edge cases (~25 minutes). Hard problems require non-obvious insight or optimal complexity (~40 minutes).
Yes. When signed in, solved and attempted problems are marked in the list and you can filter by status to focus on what you have not finished yet.