Practice problems across 75+ categories
Practice problems frequently asked at Meta • 2900 problems | 652 Easy | 1528 Medium | 703 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 616 | Design Compressed String Iterator | Easy | ArrayStringDesign |
| 617 | Design File System | Medium | Hash TableStringDesign |
| 618 | Design Front Middle Back Queue | Medium | ArrayLinked ListDesign |
| 619 | Design Graph With Shortest Path Calculator | Hard | GraphDesignHeap (Priority Queue) |
| 620 | Design HashMap | Easy | ArrayHash TableLinked List |
| 621 | Design HashSet | Easy | ArrayHash TableLinked List |
| 622 | Design Hit Counter | Medium | ArrayBinary SearchDesign |
| 623 | Design Linked List | Medium | Linked ListDesign |
| 624 | Design Log Storage System | Medium | Hash TableStringDesign |
| 625 | Design Memory Allocator | Medium | ArrayHash TableDesign |
| 626 | Design Most Recently Used Queue | Medium | ArrayLinked ListDivide and Conquer |
| 627 | Design Neighbor Sum Service | Easy | ArrayHash TableDesign |
| 628 | Design Search Autocomplete System | Hard | StringDepth-First SearchDesign |
| 629 | Design Snake Game | Medium | ArrayHash TableDesign |
| 630 | Design Spreadsheet | Medium | ArrayHash TableString |
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