Practice problems across 75+ categories
Practice problems frequently asked at Meta • 2900 problems | 652 Easy | 1528 Medium | 703 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 2626 | Stone Removal Game | Easy | MathSimulation |
| 2627 | Strange Printer | Hard | StringDynamic Programming |
| 2628 | Stream of Characters | Hard | ArrayStringDesign |
| 2629 | Strictly Palindromic Number | Medium | MathTwo PointersBrainteaser |
| 2630 | String Compression II | Hard | StringDynamic Programming |
| 2631 | String Compression III | Medium | String |
| 2632 | String Matching in an Array | Easy | ArrayStringString Matching |
| 2633 | String Transformation | Hard | MathStringDynamic Programming |
| 2634 | String Without AAA or BBB | Medium | StringGreedy |
| 2635 | Strings Differ by One Character | Medium | Hash TableStringRolling Hash |
| 2636 | Strobogrammatic Number | Medium | Hash TableTwo PointersString |
| 2637 | Strobogrammatic Number II | Medium | ArrayStringRecursion |
| 2638 | Strobogrammatic Number III | Hard | ArrayStringRecursion |
| 2639 | Strong Friendship | Medium | Database |
| 2640 | Strong Password Checker | Hard | StringGreedyHeap (Priority Queue) |
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