Practice problems across 75+ categories
Practice problems frequently asked at Two Pointers • 223 problems | 57 Easy | 134 Medium | 31 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1 | 3Sum | Medium | ArrayTwo PointersSorting |
| 2 | 3Sum Closest | Medium | ArrayTwo PointersSorting |
| 3 | 3Sum Smaller | Medium | ArrayTwo PointersBinary Search |
| 4 | 3Sum With Multiplicity | Medium | ArrayHash TableTwo Pointers |
| 5 | 4Sum | Medium | ArrayTwo PointersSorting |
| 6 | Add Two Polynomials Represented as Linked Lists | Medium | Linked ListMathTwo Pointers |
| 7 | Adding Spaces to a String | Medium | ArrayTwo PointersString |
| 8 | Advantage Shuffle | Medium | ArrayTwo PointersGreedy |
| 9 | Append Characters to String to Make Subsequence | Medium | Two PointersStringGreedy |
| 10 | Apply Operations to an Array | Easy | ArrayTwo PointersSimulation |
| 11 | Assign Cookies | Easy | ArrayTwo PointersGreedy |
| 12 | Backspace String Compare | Easy | Two PointersStringStack |
| 13 | Bag of Tokens | Medium | ArrayTwo PointersGreedy |
| 14 | Boats to Save People | Medium | ArrayTwo PointersGreedy |
| 15 | Camelcase Matching | Medium | ArrayTwo PointersString |
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