Practice problems across 75+ categories
Practice problems frequently asked at Two Pointers • 223 problems | 57 Easy | 134 Medium | 31 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 181 | Separate Black and White Balls | Medium | Two PointersStringGreedy |
| 182 | Shortest Distance to a Character | Easy | ArrayTwo PointersString |
| 183 | Shortest Matching Substring | Hard | Two PointersStringBinary Search |
| 184 | Shortest Subarray to be Removed to Make Array Sorted | Medium | ArrayTwo PointersBinary Search |
| 185 | Shortest Unsorted Continuous Subarray | Medium | ArrayTwo PointersStack |
| 186 | Shortest Way to Form String | Medium | Two PointersStringBinary Search |
| 187 | Shortest Word Distance II | Medium | ArrayHash TableTwo Pointers |
| 188 | Smallest Subarray to Sort in Every Sliding Window | Medium | ArrayTwo PointersStack |
| 189 | Sort Array By Parity | Easy | ArrayTwo PointersSorting |
| 190 | Sort Array By Parity II | Easy | ArrayTwo PointersSorting |
| 191 | Sort Colors | Medium | ArrayTwo PointersSorting |
| 192 | Sort Linked List Already Sorted Using Absolute Values | Medium | Linked ListTwo PointersSorting |
| 193 | Sort List | Medium | Linked ListTwo PointersDivide and Conquer |
| 194 | Sort Transformed Array | Medium | ArrayMathTwo Pointers |
| 195 | Split a Circular Linked List | Medium | Linked ListTwo Pointers |
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