Practice problems across 75+ categories
Practice problems frequently asked at Array • 1947 problems | 398 Easy | 1049 Medium | 497 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1831 | Sum of Values at Indices With K Set Bits | Easy | ArrayBit Manipulation |
| 1832 | Sum of Variable Length Subarrays | Easy | ArrayPrefix Sum |
| 1833 | Summary Ranges | Easy | Array |
| 1834 | Super Ugly Number | Medium | ArrayMathDynamic Programming |
| 1835 | Super Washing Machines | Hard | ArrayGreedy |
| 1836 | Surface Area of 3D Shapes | Easy | ArrayMathGeometry |
| 1837 | Surrounded Regions | Medium | ArrayDepth-First SearchBreadth-First Search |
| 1838 | Swim in Rising Water | Hard | ArrayBinary SearchDepth-First Search |
| 1839 | Synonymous Sentences | Medium | ArrayHash TableString |
| 1840 | Take Gifts From the Richest Pile | Easy | ArrayHeap (Priority Queue)Simulation |
| 1841 | Taking Maximum Energy From the Mystic Dungeon | Medium | ArrayPrefix Sum |
| 1842 | Tallest Billboard | Hard | ArrayDynamic Programming |
| 1843 | Target Sum | Medium | ArrayDynamic ProgrammingBacktracking |
| 1844 | Task Scheduler | Medium | ArrayHash TableGreedy |
| 1845 | Task Scheduler II | Medium | ArrayHash TableSimulation |
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