Practice problems across 75+ categories
Practice problems frequently asked at Binary Indexed Tree • 42 problems | 1 Easy | 12 Medium | 29 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 16 | Find the Longest Valid Obstacle Course at Each Position | Hard | ArrayBinary SearchBinary Indexed Tree |
| 17 | K Empty Slots | Hard | ArrayBinary Indexed TreeSegment Tree |
| 18 | Longest Increasing Subsequence II | Hard | ArrayDivide and ConquerDynamic Programming |
| 19 | Longest Uploaded Prefix | Medium | Hash TableBinary SearchUnion Find |
| 20 | Make Array Empty | Hard | ArrayBinary SearchGreedy |
| 21 | Maximum Area Rectangle With Point Constraints I | Medium | ArrayMathBinary Indexed Tree |
| 22 | Maximum Area Rectangle With Point Constraints II | Hard | ArrayMathBinary Indexed Tree |
| 23 | Maximum Balanced Subsequence Sum | Hard | ArrayBinary SearchDynamic Programming |
| 24 | Maximum Number of Intersections on the Chart | Hard | ArrayHash TableMath |
| 25 | Maximum Profitable Triplets With Increasing Prices I | Medium | ArrayBinary Indexed TreeSegment Tree |
| 26 | Maximum Profitable Triplets With Increasing Prices II | Hard | ArrayBinary Indexed TreeSegment Tree |
| 27 | Maximum Sum Queries | Hard | ArrayBinary SearchStack |
| 28 | Minimum Number of Moves to Make Palindrome | Hard | Two PointersStringGreedy |
| 29 | Minimum Possible Integer After at Most K Adjacent Swaps On Digits | Hard | StringGreedyBinary Indexed Tree |
| 30 | Minimum Threshold for Inversion Pairs Count | Medium | ArrayBinary SearchBinary Indexed Tree |
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