Practice problems across 75+ categories
Practice problems frequently asked at Apple • 571 problems | 192 Easy | 283 Medium | 92 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 256 | Longest Word in Dictionary through Deleting | Medium | ArrayTwo PointersString |
| 257 | Lowest Common Ancestor of a Binary Search Tree | Medium | TreeDepth-First SearchBinary Search Tree |
| 258 | Lowest Common Ancestor of a Binary Tree | Medium | TreeDepth-First SearchBinary Tree |
| 259 | Lowest Common Ancestor of a Binary Tree II | Medium | TreeDepth-First SearchBinary Tree |
| 260 | Magnetic Force Between Two Balls | Medium | ArrayBinary SearchSorting |
| 261 | Majority Element II | Medium | ArrayHash TableSorting |
| 262 | Managers with at Least 5 Direct Reports | Medium | Database |
| 263 | Market Analysis III | Medium | Database |
| 264 | Max Area of Island | Medium | ArrayDepth-First SearchBreadth-First Search |
| 265 | Max Dot Product of Two Subsequences | Hard | ArrayDynamic Programming |
| 266 | Max Points on a Line | Hard | ArrayHash TableMath |
| 267 | Max Stack | Hard | Linked ListStackDesign |
| 268 | Max Sum of a Pair With Equal Sum of Digits | Medium | ArrayHash TableSorting |
| 269 | Maximal Range That Each Element Is Maximum in It | Medium | ArrayStackMonotonic Stack |
| 270 | Maximize Distance to Closest Person | Medium | Array |
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