Practice problems across 75+ categories
Practice problems frequently asked at String • 803 problems | 228 Easy | 390 Medium | 177 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 661 | Shifting Letters II | Medium | ArrayStringPrefix Sum |
| 662 | Short Encoding of Words | Medium | ArrayHash TableString |
| 663 | Shortest and Lexicographically Smallest Beautiful String | Medium | StringSliding Window |
| 664 | Shortest Common Supersequence | Unknown | StringDynamic Programming |
| 665 | Shortest Common Supersequence | Unknown | StringDynamic Programming |
| 666 | Shortest Completing Word | Easy | ArrayHash TableString |
| 667 | Shortest Distance to a Character | Easy | ArrayTwo PointersString |
| 668 | Shortest Distance to Target String in a Circular Array | Easy | ArrayString |
| 669 | Shortest Matching Substring | Hard | Two PointersStringBinary Search |
| 670 | Shortest Palindrome | Hard | StringRolling HashString Matching |
| 671 | Shortest String That Contains Three Strings | Medium | StringGreedyEnumeration |
| 672 | Shortest Uncommon Substring in an Array | Medium | ArrayHash TableString |
| 673 | Shortest Way to Form String | Medium | Two PointersStringBinary Search |
| 674 | Shortest Word Distance | Easy | ArrayString |
| 675 | Shortest Word Distance II | Medium | ArrayHash TableTwo Pointers |
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