Practice problems across 75+ categories
Practice problems frequently asked at Array • 1947 problems | 398 Easy | 1049 Medium | 497 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 856 | Matrix Diagonal Sum | Easy | ArrayMatrix |
| 857 | Matrix Similarity After Cyclic Shifts | Easy | ArrayMathMatrix |
| 858 | Max Area of Island | Medium | ArrayDepth-First SearchBreadth-First Search |
| 859 | Max Chunks To Make Sorted | Medium | ArrayStackGreedy |
| 860 | Max Chunks To Make Sorted II | Hard | ArrayStackGreedy |
| 861 | Max Consecutive Ones | Easy | Array |
| 862 | Max Consecutive Ones II | Medium | ArrayDynamic ProgrammingSliding Window |
| 863 | Max Consecutive Ones III | Medium | ArrayBinary SearchSliding Window |
| 864 | Max Dot Product of Two Subsequences | Hard | ArrayDynamic Programming |
| 865 | Max Increase to Keep City Skyline | Medium | ArrayGreedyMatrix |
| 866 | Max Number of K-Sum Pairs | Medium | ArrayHash TableTwo Pointers |
| 867 | Max Pair Sum in an Array | Easy | ArrayHash Table |
| 868 | Max Points on a Line | Hard | ArrayHash TableMath |
| 869 | Max Sum of a Pair With Equal Sum of Digits | Medium | ArrayHash TableSorting |
| 870 | Max Sum of Rectangle No Larger Than K | Hard | ArrayBinary SearchMatrix |
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