Practice problems across 75+ categories
Practice problems frequently asked at Two Pointers • 223 problems | 57 Easy | 134 Medium | 31 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 76 | Is Subsequence | Easy | Two PointersStringDynamic Programming |
| 77 | K-diff Pairs in an Array | Medium | ArrayHash TableTwo Pointers |
| 78 | K-th Smallest Prime Fraction | Medium | ArrayTwo PointersBinary Search |
| 79 | Largest Merge Of Two Strings | Medium | Two PointersStringGreedy |
| 80 | Largest Positive Integer That Exists With Its Negative | Easy | ArrayHash TableTwo Pointers |
| 81 | Last Substring in Lexicographical Order | Hard | Two PointersString |
| 82 | Lexicographically Smallest Palindrome | Easy | Two PointersStringGreedy |
| 83 | Linked List Cycle | Easy | Hash TableLinked ListTwo Pointers |
| 84 | Linked List Cycle II | Medium | Hash TableLinked ListTwo Pointers |
| 85 | Long Pressed Name | Easy | Two PointersString |
| 86 | Longest Chunked Palindrome Decomposition | Hard | Two PointersStringDynamic Programming |
| 87 | Longest Common Prefix After at Most One Removal | Medium | Two PointersString |
| 88 | Longest Mountain in Array | Medium | ArrayTwo PointersDynamic Programming |
| 89 | Longest Palindrome After Substring Concatenation I | Medium | Two PointersStringDynamic Programming |
| 90 | Longest Palindrome After Substring Concatenation II | Hard | Two PointersStringDynamic Programming |
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