Practice problems across 75+ categories
Practice problems frequently asked at Meta • 2900 problems | 652 Easy | 1528 Medium | 703 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1111 | Guess the Number Using Bitwise Questions I | Medium | Bit ManipulationInteractive |
| 1112 | Guess the Number Using Bitwise Questions II | Medium | Bit ManipulationInteractive |
| 1113 | Guess the Word | Hard | ArrayMathString |
| 1114 | Hand of Straights | Medium | ArrayHash TableGreedy |
| 1115 | Handling Sum Queries After Update | Hard | ArraySegment Tree |
| 1116 | Handshakes That Don't Cross | Hard | MathDynamic Programming |
| 1117 | Happy Number | Easy | Hash TableMathTwo Pointers |
| 1118 | Happy Students | Medium | ArraySortingEnumeration |
| 1119 | Hash Divided String | Medium | StringSimulation |
| 1120 | Heaters | Medium | ArrayTwo PointersBinary Search |
| 1121 | Height of Binary Tree After Subtree Removal Queries | Hard | ArrayTreeDepth-First Search |
| 1122 | Height of Special Binary Tree | Medium | TreeDepth-First SearchBreadth-First Search |
| 1123 | Hexspeak | Easy | MathString |
| 1124 | High-Access Employees | Medium | ArrayHash TableString |
| 1125 | Highest Grade For Each Student | Medium | Database |
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