Practice problems across 75+ categories
Practice problems frequently asked at String • 803 problems | 228 Easy | 390 Medium | 177 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 691 | Separate Black and White Balls | Medium | Two PointersStringGreedy |
| 692 | Serialize and Deserialize Binary Tree | Hard | StringTreeDepth-First Search |
| 693 | Serialize and Deserialize BST | Medium | StringTreeDepth-First Search |
| 694 | Serialize and Deserialize N-ary Tree | Hard | StringTreeDepth-First Search |
| 695 | Shift Distance Between Two Strings | Medium | ArrayStringPrefix Sum |
| 696 | Shifting Letters | Medium | ArrayStringPrefix Sum |
| 697 | Shifting Letters II | Medium | ArrayStringPrefix Sum |
| 698 | Short Encoding of Words | Medium | ArrayHash TableString |
| 699 | Shortest and Lexicographically Smallest Beautiful String | Medium | StringSliding Window |
| 700 | Shortest Common Supersequence | Unknown | StringDynamic Programming |
| 701 | Shortest Common Supersequence | Unknown | StringDynamic Programming |
| 702 | Shortest Completing Word | Easy | ArrayHash TableString |
| 703 | Shortest Distance to a Character | Easy | ArrayTwo PointersString |
| 704 | Shortest Distance to Target String in a Circular Array | Easy | ArrayString |
| 705 | Shortest Matching Substring | Hard | Two PointersStringBinary Search |
Powerful online tools to boost your productivity
Coding Ground For Developers
Code, Edit, Run and ShareIgnite your coding potential on Coding Ground - an immersive online platform for hands-on learning, collaboration, and skill development.
