Practice problems across 75+ categories
Practice problems frequently asked at Google • 3407 problems | 851 Easy | 1775 Medium | 761 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 3181 | Swap Sex of Employees | Unknown | Database |
| 3182 | Swapping Nodes in a Linked List | Medium | Linked ListTwo Pointers |
| 3183 | Swim in Rising Water | Hard | ArrayBinary SearchDepth-First Search |
| 3184 | Symmetric Coordinates | Medium | Database |
| 3185 | Symmetric Tree | Easy | TreeDepth-First SearchBreadth-First Search |
| 3186 | Tag Validator | Hard | StringStack |
| 3187 | Take Gifts From the Richest Pile | Easy | ArrayHeap (Priority Queue)Simulation |
| 3188 | Take K of Each Character From Left and Right | Medium | Hash TableStringSliding Window |
| 3189 | Taking Maximum Energy From the Mystic Dungeon | Medium | ArrayPrefix Sum |
| 3190 | Tallest Billboard | Hard | ArrayDynamic Programming |
| 3191 | Target Sum | Medium | ArrayDynamic ProgrammingBacktracking |
| 3192 | Task Scheduler | Medium | ArrayHash TableGreedy |
| 3193 | Task Scheduler II | Medium | ArrayHash TableSimulation |
| 3194 | Tasks Count in the Weekend | Medium | Database |
| 3195 | Team Scores in Football Tournament | Medium | Database |
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