Practice problems across 75+ categories
Practice problems frequently asked at Topological Sort • 36 problems | 0 Easy | 15 Medium | 20 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1 | Alien Dictionary | Hard | ArrayStringDepth-First Search |
| 2 | All Ancestors of a Node in a Directed Acyclic Graph | Medium | Depth-First SearchBreadth-First SearchGraph |
| 3 | All Paths from Source Lead to Destination | Medium | GraphTopological Sort |
| 4 | Apply Substitutions | Medium | ArrayHash TableString |
| 5 | Build a Matrix With Conditions | Hard | ArrayGraphTopological Sort |
| 6 | Cat and Mouse | Hard | MathDynamic ProgrammingGraph |
| 7 | Cat and Mouse II | Hard | ArrayMathDynamic Programming |
| 8 | Collect Coins in a Tree | Hard | ArrayTreeGraph |
| 9 | Count Ways to Build Rooms in an Ant Colony | Hard | MathDynamic ProgrammingTree |
| 10 | Course Schedule | Medium | Depth-First SearchBreadth-First SearchGraph |
| 11 | Course Schedule II | Medium | Depth-First SearchBreadth-First SearchGraph |
| 12 | Course Schedule IV | Medium | Depth-First SearchBreadth-First SearchGraph |
| 13 | Design Excel Sum Formula | Unknown | ArrayHash TableString |
| 14 | Find All Possible Recipes from Given Supplies | Medium | ArrayHash TableString |
| 15 | Find Eventual Safe States | Medium | Depth-First SearchBreadth-First SearchGraph |
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