Practice problems across 75+ categories
Practice problems frequently asked at Binary Search • 309 problems | 31 Easy | 162 Medium | 115 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 16 | Closest Equal Element Queries | Medium | ArrayHash TableBinary Search |
| 17 | Closest Nodes Queries in a Binary Search Tree | Medium | ArrayBinary SearchTree |
| 18 | Closest Room | Hard | ArrayBinary SearchSorting |
| 19 | Compare Strings by Frequency of the Smallest Character | Medium | ArrayHash TableString |
| 20 | Count Complete Tree Nodes | Easy | Binary SearchBit ManipulationTree |
| 21 | Count Good Triplets in an Array | Hard | ArrayBinary SearchDivide and Conquer |
| 22 | Count Negative Numbers in a Sorted Matrix | Easy | ArrayBinary SearchMatrix |
| 23 | Count Number of Rectangles Containing Each Point | Medium | ArrayHash TableBinary Search |
| 24 | Count of Range Sum | Hard | ArrayBinary SearchDivide and Conquer |
| 25 | Count of Smaller Numbers After Self | Hard | ArrayBinary SearchDivide and Conquer |
| 26 | Count Pairs in Two Arrays | Medium | ArrayTwo PointersBinary Search |
| 27 | Count Pairs Of Nodes | Hard | ArrayHash TableTwo Pointers |
| 28 | Count Pairs Whose Sum is Less than Target | Easy | ArrayTwo PointersBinary Search |
| 29 | Count Subarrays With More Ones Than Zeros | Medium | ArrayHash TableBinary Search |
| 30 | Count Subarrays With Score Less Than K | Hard | ArrayBinary SearchSliding Window |
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