Practice problems across 75+ categories
Practice problems frequently asked at Apple • 571 problems | 192 Easy | 283 Medium | 92 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 361 | Network Delay Time | Medium | Depth-First SearchBreadth-First SearchGraph |
| 362 | Next Greater Numerically Balanced Number | Medium | Hash TableMathBacktracking |
| 363 | Non-decreasing Subsequences | Medium | ArrayHash TableBacktracking |
| 364 | Non-overlapping Intervals | Medium | ArrayDynamic ProgrammingGreedy |
| 365 | Nth Highest Salary | Medium | Database |
| 366 | Number Complement | Easy | Bit Manipulation |
| 367 | Number of 1 Bits | Easy | Divide and ConquerBit Manipulation |
| 368 | Number of Boomerangs | Medium | ArrayHash TableMath |
| 369 | Number of Closed Islands | Medium | ArrayDepth-First SearchBreadth-First Search |
| 370 | Number of Connected Components in an Undirected Graph | Medium | Depth-First SearchBreadth-First SearchUnion Find |
| 371 | Number of Days Between Two Dates | Easy | MathString |
| 372 | Number of Days in a Month | Easy | Math |
| 373 | Number of Distinct Islands | Unknown | Hash TableDepth-First SearchBreadth-First Search |
| 374 | Number of Divisible Triplet Sums | Medium | ArrayHash Table |
| 375 | Number of Equal Numbers Blocks | Medium | ArrayBinary SearchInteractive |
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