Explain the difference between DFS and BFS. When would you use each?
🔢 Data Structures And Algorithm• 9/21/2025
Understanding Depth-First Search vs Breadth-First Search algorithms, their implementations, and use cases.
DFS vs BFS Comparison
Depth-First Search (DFS)
Approach: Explores as far as possible along each branch before backtracking
Use Cases:
- Finding paths in mazes
- Topological sorting
- Detecting cycles in graphs
- Tree traversals (preorder, inorder, postorder)
Breadth-First Search (BFS)
Approach: Explores all neighbors at current depth before moving to next depth level
Use Cases:
- Finding shortest path in unweighted graphs
- Level-order tree traversal
- Finding connected components
- Web crawling
By: System Admin