What are the differences between BFS and DFS?
BFS (Breadth-First Search) explores all neighbors at the present depth before moving on to nodes at the next depth level, while DFS (Depth-First Search) explores as far as possible along a branch before backtracking.
Can you give me an example of when to use BFS?
BFS is ideal for finding the shortest path in unweighted graphs, like in social networks or maze-solving.
And when should I use DFS instead?
DFS is useful for scenarios like topological sorting, solving puzzles with a single solution, or when memory is limited.
What are the time and space complexities of both algorithms?
Both BFS and DFS have a time complexity of O(V + E), where V is vertices and E is edges. BFS has a space complexity of O(V), while DFS can be O(V) or O(h), where h is the maximum depth.
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