Practice problems across 75+ categories
Practice problems frequently asked at Two Pointers • 223 problems | 57 Easy | 134 Medium | 31 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 16 | Candy Crush | Medium | ArrayTwo PointersMatrix |
| 17 | Check If a Word Occurs As a Prefix of Any Word in a Sentence | Easy | Two PointersStringString Matching |
| 18 | Check If N and Its Double Exist | Easy | ArrayHash TableTwo Pointers |
| 19 | Check If String Is a Prefix of Array | Easy | ArrayTwo PointersString |
| 20 | Checking Existence of Edge Length Limited Paths | Hard | ArrayTwo PointersUnion Find |
| 21 | Circular Array Loop | Medium | ArrayHash TableTwo Pointers |
| 22 | Closest Binary Search Tree Value II | Hard | Two PointersStackTree |
| 23 | Closest Subsequence Sum | Hard | ArrayTwo PointersDynamic Programming |
| 24 | Compare Version Numbers | Medium | Two PointersString |
| 25 | Container With Most Water | Medium | ArrayTwo PointersGreedy |
| 26 | Count Binary Substrings | Easy | Two PointersString |
| 27 | Count Houses in a Circular Street II | Hard | ArrayTwo Pointers |
| 28 | Count Pairs in Two Arrays | Medium | ArrayTwo PointersBinary Search |
| 29 | Count Pairs Of Nodes | Hard | ArrayHash TableTwo Pointers |
| 30 | Count Pairs Whose Sum is Less than Target | Easy | ArrayTwo PointersBinary Search |
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