Practice problems across 75+ categories
Practice problems frequently asked at Meta • 2900 problems | 652 Easy | 1528 Medium | 703 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1021 | Find X Value of Array II | Hard | ArrayMathSegment Tree |
| 1022 | Find Xor-Beauty of Array | Medium | ArrayMathBit Manipulation |
| 1023 | Finding MK Average | Hard | DesignQueueHeap (Priority Queue) |
| 1024 | Finding Pairs With a Certain Sum | Medium | ArrayHash TableDesign |
| 1025 | Finding the Number of Visible Mountains | Medium | ArrayStackSorting |
| 1026 | Finding the Topic of Each Post | Hard | Database |
| 1027 | Finding the Users Active Minutes | Medium | ArrayHash Table |
| 1028 | First and Last Call On the Same Day | Hard | Database |
| 1029 | First Completely Painted Row or Column | Medium | ArrayHash TableMatrix |
| 1030 | First Day Where You Have Been in All the Rooms | Medium | ArrayDynamic Programming |
| 1031 | First Letter Capitalization | Hard | Database |
| 1032 | First Letter Capitalization II | Hard | Database |
| 1033 | First Letter to Appear Twice | Easy | Hash TableStringBit Manipulation |
| 1034 | First Missing Positive | Hard | ArrayHash Table |
| 1035 | First Unique Character in a String | Easy | Hash TableStringQueue |
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