Practice problems across 75+ categories
Practice problems frequently asked at Meta • 2900 problems | 652 Easy | 1528 Medium | 703 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 331 | Construct the Rectangle | Easy | Math |
| 332 | Constructing Two Increasing Arrays | Hard | ArrayDynamic Programming |
| 333 | Contain Virus | Hard | ArrayDepth-First SearchBreadth-First Search |
| 334 | Container With Most Water | Medium | ArrayTwo PointersGreedy |
| 335 | Contains Duplicate | Easy | ArrayHash TableSorting |
| 336 | Contains Duplicate II | Easy | ArrayHash TableSliding Window |
| 337 | Contains Duplicate III | Hard | ArraySliding WindowSorting |
| 338 | Contiguous Array | Medium | ArrayHash TablePrefix Sum |
| 339 | Continuous Subarrays | Medium | ArrayQueueSliding Window |
| 340 | Convert 1D Array Into 2D Array | Easy | ArrayMatrixSimulation |
| 341 | Convert an Array Into a 2D Array With Conditions | Medium | ArrayHash Table |
| 342 | Convert Date Format | Easy | Database |
| 343 | Convert Doubly Linked List to Array I | Easy | ArrayLinked ListDoubly-Linked List |
| 344 | Convert Doubly Linked List to Array II | Medium | ArrayLinked ListDoubly-Linked List |
| 345 | Convert JSON String to Object | Hard | JavaScript |
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