Practice problems across 75+ categories
Practice problems frequently asked at Rolling Hash • 30 problems | 1 Easy | 12 Medium | 16 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 16 | Longest Repeating Substring | Medium | StringBinary SearchDynamic Programming |
| 17 | Maximum Deletions on a String | Hard | StringDynamic ProgrammingRolling Hash |
| 18 | Maximum Length of Repeated Subarray | Medium | ArrayBinary SearchDynamic Programming |
| 19 | Maximum Product of the Length of Two Palindromic Substrings | Hard | StringRolling HashHash Function |
| 20 | Minimum Number of Valid Strings to Form Target I | Medium | ArrayStringBinary Search |
| 21 | Minimum Number of Valid Strings to Form Target II | Hard | ArrayStringBinary Search |
| 22 | Minimum Time to Revert Word to Initial State I | Medium | StringRolling HashString Matching |
| 23 | Minimum Time to Revert Word to Initial State II | Hard | StringRolling HashString Matching |
| 24 | Number of Distinct Substrings in a String | Unknown | StringTrieRolling Hash |
| 25 | Number of Subarrays That Match a Pattern I | Medium | ArrayRolling HashString Matching |
| 26 | Number of Subarrays That Match a Pattern II | Hard | ArrayRolling HashString Matching |
| 27 | Repeated DNA Sequences | Medium | Hash TableStringBit Manipulation |
| 28 | Shortest Palindrome | Hard | StringRolling HashString Matching |
| 29 | Strings Differ by One Character | Medium | Hash TableStringRolling Hash |
| 30 | Sum of Scores of Built Strings | Hard | StringBinary SearchRolling Hash |
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