Practice problems across 75+ categories
Practice problems frequently asked at Bit Manipulation • 249 problems | 48 Easy | 116 Medium | 85 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 181 | Number of Good Ways to Split a String | Medium | Hash TableStringDynamic Programming |
| 182 | Number of Possible Sets of Closing Branches | Hard | Bit ManipulationGraphHeap (Priority Queue) |
| 183 | Number of Self-Divisible Permutations | Medium | ArrayMathDynamic Programming |
| 184 | Number of Squareful Arrays | Hard | ArrayHash TableMath |
| 185 | Number of Steps to Reduce a Number in Binary Representation to One | Medium | StringBit ManipulationSimulation |
| 186 | Number of Steps to Reduce a Number to Zero | Easy | MathBit Manipulation |
| 187 | Number of Subarrays With AND Value of K | Hard | ArrayBinary SearchBit Manipulation |
| 188 | Number of Unique XOR Triplets I | Medium | ArrayMathBit Manipulation |
| 189 | Number of Unique XOR Triplets II | Medium | ArrayMathBit Manipulation |
| 190 | Number of Valid Words for Each Puzzle | Hard | ArrayHash TableString |
| 191 | Number of Ways to Assign Edge Weights II | Hard | ArrayMathDynamic Programming |
| 192 | Number of Ways to Build Sturdy Brick Wall | Medium | ArrayDynamic ProgrammingBit Manipulation |
| 193 | Number of Ways to Wear Different Hats to Each Other | Hard | ArrayDynamic ProgrammingBit Manipulation |
| 194 | Number of Wonderful Substrings | Medium | Hash TableStringBit Manipulation |
| 195 | Once Twice | Medium | ArrayBit Manipulation |
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