Implement BFS shortest paths with reconstruction

Q: Implement BFS shortest paths with reconstruction

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Question

Given an unweighted graph with n vertices and m edges represented as an adjacency list, implement breadth-first search (BFS) from a source vertex s to return: (

an array dist where dist[v] is the length of the shortest path from s to v (or −1 if unreachable); and (
an array parent to reconstruct one shortest path. Handle disconnected graphs, analyze time and space complexity, and provide code in C, C++, Java, or JavaScript.

Implement BFS shortest paths with reconstruction

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