Practice problems across 75+ categories
Practice problems frequently asked at Array • 1947 problems | 398 Easy | 1049 Medium | 497 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1546 | Peak Index in a Mountain Array | Medium | ArrayBinary Search |
| 1547 | Peaks in Array | Hard | ArrayBinary Indexed TreeSegment Tree |
| 1548 | Peeking Iterator | Medium | ArrayDesignIterator |
| 1549 | People Whose List of Favorite Companies Is Not a Subset of Another List | Medium | ArrayHash TableString |
| 1550 | Perfect Rectangle | Hard | ArrayHash TableMath |
| 1551 | Perform String Shifts | Easy | ArrayMathString |
| 1552 | Permutations | Medium | ArrayBacktracking |
| 1553 | Permutations II | Medium | ArrayBacktrackingSorting |
| 1554 | Permutations III | Medium | ArrayBacktracking |
| 1555 | Permutations IV | Hard | ArrayMathCombinatorics |
| 1556 | Phone Number Prefix | Easy | ArrayStringTrie |
| 1557 | Pizza With 3n Slices | Hard | ArrayDynamic ProgrammingGreedy |
| 1558 | Plates Between Candles | Medium | ArrayStringBinary Search |
| 1559 | Plus One | Easy | ArrayMath |
| 1560 | Points That Intersect With Cars | Easy | ArrayHash TablePrefix Sum |
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