Practice problems across 75+ categories
Practice problems frequently asked at Sorting • 464 problems | 89 Easy | 273 Medium | 101 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 436 | Sum in a Matrix | Medium | ArraySortingHeap (Priority Queue) |
| 437 | Sum of Largest Prime Substrings | Medium | Hash TableMathString |
| 438 | Sum of Mutated Array Closest to Target | Medium | ArrayBinary SearchSorting |
| 439 | Sum of Subsequence Widths | Hard | ArrayMathSorting |
| 440 | Synonymous Sentences | Medium | ArrayHash TableString |
| 441 | Task Scheduler | Medium | ArrayHash TableGreedy |
| 442 | The Earliest Moment When Everyone Become Friends | Medium | ArrayUnion FindSorting |
| 443 | The k Strongest Values in an Array | Medium | ArrayTwo PointersSorting |
| 444 | The K Weakest Rows in a Matrix | Easy | ArrayBinary SearchSorting |
| 445 | The Latest Time to Catch a Bus | Medium | ArrayTwo PointersBinary Search |
| 446 | The Number of Beautiful Subsets | Medium | ArrayHash TableMath |
| 447 | The Number of Weak Characters in the Game | Medium | ArrayStackGreedy |
| 448 | The Skyline Problem | Hard | ArrayDivide and ConquerBinary Indexed Tree |
| 449 | Third Maximum Number | Easy | ArraySorting |
| 450 | Top K Frequent Elements | Medium | ArrayHash TableDivide and Conquer |
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