Practice problems across 75+ categories
Practice problems frequently asked at Merge Sort • 12 problems | 0 Easy | 4 Medium | 8 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1 | Count Good Triplets in an Array | Hard | ArrayBinary SearchDivide and Conquer |
| 2 | Count of Range Sum | Hard | ArrayBinary SearchDivide and Conquer |
| 3 | Count of Smaller Numbers After Self | Hard | ArrayBinary SearchDivide and Conquer |
| 4 | Count Subarrays With More Ones Than Zeros | Medium | ArrayHash TableBinary Search |
| 5 | Count the Number of K-Big Indices | Hard | ArrayBinary SearchDivide and Conquer |
| 6 | Create Sorted Array through Instructions | Hard | ArrayBinary SearchDivide and Conquer |
| 7 | Find the Index of Permutation | Medium | ArrayBinary SearchDivide and Conquer |
| 8 | Merge k Sorted Lists | Hard | Linked ListDivide and ConquerHeap (Priority Queue) |
| 9 | Number of Pairs Satisfying Inequality | Hard | ArrayBinary SearchDivide and Conquer |
| 10 | Reverse Pairs | Hard | ArrayBinary SearchDivide and Conquer |
| 11 | Sort an Array | Medium | ArrayDivide and ConquerSorting |
| 12 | Sort List | Medium | Linked ListTwo PointersDivide and Conquer |
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