Practice problems across 75+ categories
Practice problems frequently asked at Google • 3407 problems | 851 Easy | 1775 Medium | 761 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1306 | Hand of Straights | Medium | ArrayHash TableGreedy |
| 1307 | Handling Sum Queries After Update | Hard | ArraySegment Tree |
| 1308 | Handshakes That Don't Cross | Hard | MathDynamic Programming |
| 1309 | Happy Number | Easy | Hash TableMathTwo Pointers |
| 1310 | Happy Students | Medium | ArraySortingEnumeration |
| 1311 | Harshad Number | Easy | Math |
| 1312 | Hash Divided String | Medium | StringSimulation |
| 1313 | Heaters | Medium | ArrayTwo PointersBinary Search |
| 1314 | Height Checker | Easy | ArraySortingCounting Sort |
| 1315 | Height of Binary Tree After Subtree Removal Queries | Hard | ArrayTreeDepth-First Search |
| 1316 | Height of Special Binary Tree | Medium | TreeDepth-First SearchBreadth-First Search |
| 1317 | Hexspeak | Easy | MathString |
| 1318 | High-Access Employees | Medium | ArrayHash TableString |
| 1319 | Highest Grade For Each Student | Medium | Database |
| 1320 | Highest Salaries Difference | Easy | Database |
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