Practice problems across 75+ categories
Practice problems frequently asked at Prefix Sum • 208 problems | 18 Easy | 128 Medium | 61 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 106 | Maximum Subarray Min-Product | Medium | ArrayStackMonotonic Stack |
| 107 | Maximum Subarray Sum With Length Divisible by K | Medium | ArrayHash TablePrefix Sum |
| 108 | Maximum Sum Obtained of Any Permutation | Medium | ArrayGreedySorting |
| 109 | Maximum Sum of 3 Non-Overlapping Subarrays | Hard | ArrayDynamic ProgrammingSliding Window |
| 110 | Maximum Sum of an Hourglass | Medium | ArrayMatrixPrefix Sum |
| 111 | Maximum Sum Score of Array | Medium | ArrayPrefix Sum |
| 112 | Maximum Total Area Occupied by Pistons | Hard | ArrayHash TableString |
| 113 | Maximum Total Beauty of the Gardens | Hard | ArrayTwo PointersBinary Search |
| 114 | Maximum Trailing Zeros in a Cornered Path | Medium | ArrayMatrixPrefix Sum |
| 115 | Maximum Value of K Coins From Piles | Hard | ArrayDynamic ProgrammingPrefix Sum |
| 116 | Maximum White Tiles Covered by a Carpet | Medium | ArrayBinary SearchGreedy |
| 117 | Maximum XOR for Each Query | Medium | ArrayBit ManipulationPrefix Sum |
| 118 | Meeting Rooms II | Medium | ArrayTwo PointersGreedy |
| 119 | Merge Operations for Minimum Travel Time | Hard | ArrayDynamic ProgrammingPrefix Sum |
| 120 | Minimize Maximum of Array | Medium | ArrayBinary SearchDynamic Programming |
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