Practice problems across 75+ categories
Practice coding problems across all companies and topics • 3600 problems | 879 Easy | 1856 Medium | 842 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 946 | Validate Stack Sequences | Medium | ArrayStackSimulation |
| 947 | Most Stones Removed with Same Row or Column | Medium | Hash TableDepth-First SearchUnion Find |
| 948 | Bag of Tokens | Medium | ArrayTwo PointersGreedy |
| 949 | Largest Time for Given Digits | Medium | ArrayStringBacktracking |
| 950 | Reveal Cards In Increasing Order | Medium | ArrayQueueSorting |
| 951 | Flip Equivalent Binary Trees | Medium | TreeDepth-First SearchBinary Tree |
| 952 | Largest Component Size by Common Factor | Hard | ArrayHash TableMath |
| 953 | Verifying an Alien Dictionary | Easy | ArrayHash TableString |
| 954 | Array of Doubled Pairs | Medium | ArrayHash TableGreedy |
| 955 | Delete Columns to Make Sorted II | Medium | ArrayStringGreedy |
| 956 | Tallest Billboard | Hard | ArrayDynamic Programming |
| 957 | Prison Cells After N Days | Medium | ArrayHash TableMath |
| 958 | Check Completeness of a Binary Tree | Medium | TreeBreadth-First SearchBinary Tree |
| 959 | Regions Cut By Slashes | Medium | ArrayHash TableDepth-First Search |
| 960 | Delete Columns to Make Sorted III | Hard | ArrayStringDynamic Programming |
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