Mid Graphs DSA & Coding Interviews

Explain Clone Graph.

Q: Explain Clone Graph.

Short answer: BFS/DFS while maintaining a map from original node → clone. For each neighbor, clone if missing, then link clones. Prevents infinite loops on cycles. Complexity Time O(V + E), Space O(V). The visited/clone map is mandatory — say it before writing loops.

Short answer: BFS/DFS while maintaining a map from original node → clone. For each neighbor, clone if missing, then link clones. Prevents infinite loops on cycles.

Complexity

Time O(V + E), Space O(V).

The visited/clone map is mandatory — say it before writing loops.

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