Practice problems across 75+ categories
Practice problems frequently asked at Meta • 2900 problems | 652 Easy | 1528 Medium | 703 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 766 | Find Active Users | Medium | Database |
| 767 | Find All Duplicates in an Array | Medium | ArrayHash TableSorting |
| 768 | Find All Good Indices | Medium | ArrayDynamic ProgrammingPrefix Sum |
| 769 | Find All Good Strings | Hard | StringDynamic ProgrammingString Matching |
| 770 | Find All Groups of Farmland | Medium | ArrayDepth-First SearchBreadth-First Search |
| 771 | Find All K-Distant Indices in an Array | Easy | ArrayTwo Pointers |
| 772 | Find All Lonely Numbers in the Array | Medium | ArrayHash TableCounting |
| 773 | Find All Numbers Disappeared in an Array | Easy | ArrayHash Table |
| 774 | Find All People With Secret | Hard | Depth-First SearchBreadth-First SearchUnion Find |
| 775 | Find All Possible Recipes from Given Supplies | Medium | ArrayHash TableString |
| 776 | Find All Possible Stable Binary Arrays I | Medium | Dynamic ProgrammingPrefix Sum |
| 777 | Find All Possible Stable Binary Arrays II | Hard | Dynamic ProgrammingPrefix Sum |
| 778 | Find All Unique Email Domains | Easy | Database |
| 779 | Find Anagram Mappings | Easy | ArrayHash Table |
| 780 | Find And Replace in String | Medium | ArrayHash TableString |
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