Practice problems across 75+ categories
Practice problems frequently asked at Amazon • 3399 problems | 851 Easy | 1772 Medium | 756 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 3166 | Super Washing Machines | Hard | ArrayGreedy |
| 3167 | Surface Area of 3D Shapes | Easy | ArrayMathGeometry |
| 3168 | Surrounded Regions | Medium | ArrayDepth-First SearchBreadth-First Search |
| 3169 | Swap Adjacent in LR String | Medium | Two PointersString |
| 3170 | Swap For Longest Repeated Character Substring | Medium | Hash TableStringSliding Window |
| 3171 | Swap Nodes in Pairs | Medium | Linked ListRecursion |
| 3172 | Swap Sex of Employees | Unknown | Database |
| 3173 | Swapping Nodes in a Linked List | Medium | Linked ListTwo Pointers |
| 3174 | Swim in Rising Water | Hard | ArrayBinary SearchDepth-First Search |
| 3175 | Symmetric Coordinates | Medium | Database |
| 3176 | Symmetric Tree | Easy | TreeDepth-First SearchBreadth-First Search |
| 3177 | Tag Validator | Hard | StringStack |
| 3178 | Take Gifts From the Richest Pile | Easy | ArrayHeap (Priority Queue)Simulation |
| 3179 | Take K of Each Character From Left and Right | Medium | Hash TableStringSliding Window |
| 3180 | Taking Maximum Energy From the Mystic Dungeon | Medium | ArrayPrefix Sum |
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