Practice problems across 75+ categories
Practice problems frequently asked at Math • 596 problems | 150 Easy | 283 Medium | 161 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 481 | Prison Cells After N Days | Medium | ArrayHash TableMath |
| 482 | Probability of a Two Boxes Having The Same Number of Distinct Balls | Hard | ArrayMathDynamic Programming |
| 483 | Product of the Last K Numbers | Medium | ArrayMathDesign |
| 484 | Projection Area of 3D Shapes | Easy | ArrayMathGeometry |
| 485 | Quadrant Finder | Easy | ConditionsIf-ElseMath |
| 486 | Queries on Number of Points Inside a Circle | Medium | ArrayMathGeometry |
| 487 | Rabbits in Forest | Medium | ArrayHash TableMath |
| 488 | Random Flip Matrix | Medium | Hash TableMathReservoir Sampling |
| 489 | Random Pick Index | Medium | Hash TableMathReservoir Sampling |
| 490 | Random Pick with Blacklist | Hard | ArrayHash TableMath |
| 491 | Random Pick with Weight | Medium | ArrayMathBinary Search |
| 492 | Random Point in Non-overlapping Rectangles | Medium | ArrayMathBinary Search |
| 493 | Range Addition II | Easy | ArrayMath |
| 494 | Reach a Number | Medium | MathBinary Search |
| 495 | Reaching Points | Hard | Math |
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