Practice problems across 75+ categories
Practice problems frequently asked at Math • 596 problems | 150 Easy | 283 Medium | 161 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 571 | Toss Strange Coins | Medium | ArrayMathDynamic Programming |
| 572 | Total Characters in String After Transformations I | Medium | Hash TableMathString |
| 573 | Total Characters in String After Transformations II | Hard | Hash TableMathString |
| 574 | Total Distance Traveled | Easy | MathSimulation |
| 575 | Total Hamming Distance | Medium | ArrayMathBit Manipulation |
| 576 | Transform to Chessboard | Hard | ArrayMathBit Manipulation |
| 577 | Tree of Coprimes | Hard | ArrayMathTree |
| 578 | Type of Triangle | Easy | ArrayMathSorting |
| 579 | Ugly Number | Easy | Math |
| 580 | Ugly Number II | Medium | Hash TableMathDynamic Programming |
| 581 | Ugly Number III | Medium | MathBinary SearchCombinatorics |
| 582 | Unique Binary Search Trees | Medium | MathDynamic ProgrammingTree |
| 583 | Unique Paths | Medium | MathDynamic ProgrammingCombinatorics |
| 584 | Unit Conversion II | Medium | ArrayMathDepth-First Search |
| 585 | Valid Boomerang | Easy | ArrayMathGeometry |
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