Practice problems across 75+ categories
Practice problems frequently asked at Meta • 2900 problems | 652 Easy | 1528 Medium | 703 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 2401 | Reveal Cards In Increasing Order | Medium | ArrayQueueSorting |
| 2402 | Reverse Degree of a String | Easy | StringSimulation |
| 2403 | Reverse Integer | Medium | Math |
| 2404 | Reverse Linked List | Easy | Linked ListRecursion |
| 2405 | Reverse Linked List II | Medium | Linked List |
| 2406 | Reverse Nodes in Even Length Groups | Medium | Linked List |
| 2407 | Reverse Nodes in k-Group | Hard | Linked ListRecursion |
| 2408 | Reverse Odd Levels of Binary Tree | Medium | TreeDepth-First SearchBreadth-First Search |
| 2409 | Reverse Pairs | Hard | ArrayBinary SearchDivide and Conquer |
| 2410 | Reverse String | Easy | Two PointersString |
| 2411 | Reverse Subarray To Maximize Array Value | Hard | ArrayMathGreedy |
| 2412 | Reverse Words in a String II | Medium | Two PointersString |
| 2413 | Right Triangles | Medium | ArrayHash TableMath |
| 2414 | Rings and Rods | Easy | Hash TableString |
| 2415 | Rising Temperature | Easy | Database |
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