Practice problems across 75+ categories
Practice problems frequently asked at String Matching • 37 problems | 10 Easy | 11 Medium | 16 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 16 | Form Array by Concatenating Subarrays of Another Array | Medium | ArrayTwo PointersGreedy |
| 17 | Lexicographically Smallest Generated String | Hard | StringGreedyString Matching |
| 18 | Longest Happy Prefix | Hard | StringRolling HashString Matching |
| 19 | Match Substring After Replacement | Hard | ArrayHash TableString |
| 20 | Maximum Deletions on a String | Hard | StringDynamic ProgrammingRolling Hash |
| 21 | Maximum Repeating Substring | Easy | StringDynamic ProgrammingString Matching |
| 22 | Minimum Number of Valid Strings to Form Target I | Medium | ArrayStringBinary Search |
| 23 | Minimum Number of Valid Strings to Form Target II | Hard | ArrayStringBinary Search |
| 24 | Minimum Time to Revert Word to Initial State I | Medium | StringRolling HashString Matching |
| 25 | Minimum Time to Revert Word to Initial State II | Hard | StringRolling HashString Matching |
| 26 | Number of Subarrays That Match a Pattern I | Medium | ArrayRolling HashString Matching |
| 27 | Number of Subarrays That Match a Pattern II | Hard | ArrayRolling HashString Matching |
| 28 | Repeated String Match | Medium | StringString Matching |
| 29 | Repeated Substring Pattern | Easy | StringString Matching |
| 30 | Rotate String | Easy | StringString Matching |
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