Practice problems across 75+ categories
Practice problems frequently asked at Microsoft • 3344 problems | 831 Easy | 1747 Medium | 746 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 451 | Count Covered Buildings | Medium | ArrayHash TableSorting |
| 452 | Count Days Spent Together | Easy | MathString |
| 453 | Count Days Without Meetings | Medium | ArraySorting |
| 454 | Count Different Palindromic Subsequences | Hard | StringDynamic Programming |
| 455 | Count Distinct Numbers on Board | Easy | ArrayHash TableMath |
| 456 | Count Elements With Maximum Frequency | Easy | ArrayHash TableCounting |
| 457 | Count Elements With Strictly Smaller and Greater Elements | Easy | ArraySortingCounting |
| 458 | Count Equal and Divisible Pairs in an Array | Easy | Array |
| 459 | Count Fertile Pyramids in a Land | Hard | ArrayDynamic ProgrammingMatrix |
| 460 | Count Good Meals | Medium | ArrayHash Table |
| 461 | Count Good Nodes in Binary Tree | Medium | TreeDepth-First SearchBreadth-First Search |
| 462 | Count Good Numbers | Medium | MathRecursion |
| 463 | Count Good Triplets | Easy | ArrayEnumeration |
| 464 | Count Good Triplets in an Array | Hard | ArrayBinary SearchDivide and Conquer |
| 465 | Count Hills and Valleys in an Array | Easy | Array |
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