Practice problems across 75+ categories
Practice problems frequently asked at Ordered Set • 72 problems | 3 Easy | 27 Medium | 42 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1 | 132 Pattern | Medium | ArrayBinary SearchStack |
| 2 | Alternating Groups III | Hard | ArrayBinary Indexed TreeOrdered Set |
| 3 | Amount of New Area Painted Each Day | Hard | ArraySegment TreeOrdered Set |
| 4 | Beautiful Pairs | Hard | ArrayMathDivide and Conquer |
| 5 | Brightest Position on Street | Medium | ArraySortingPrefix Sum |
| 6 | Closest Room | Hard | ArrayBinary SearchSorting |
| 7 | Contains Duplicate III | Hard | ArraySliding WindowSorting |
| 8 | Continuous Subarrays | Medium | ArrayQueueSliding Window |
| 9 | Count Good Triplets in an Array | Hard | ArrayBinary SearchDivide and Conquer |
| 10 | Count Integers in Intervals | Hard | DesignSegment TreeOrdered Set |
| 11 | Count of Range Sum | Hard | ArrayBinary SearchDivide and Conquer |
| 12 | Count of Smaller Numbers After Self | Hard | ArrayBinary SearchDivide and Conquer |
| 13 | Count Subarrays With More Ones Than Zeros | Medium | ArrayHash TableBinary Search |
| 14 | Count the Number of K-Big Indices | Hard | ArrayBinary SearchDivide and Conquer |
| 15 | Create Sorted Array through Instructions | Hard | ArrayBinary SearchDivide and Conquer |
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