Solution: Shortest Path Visiting All Nodes
Explore how to solve the shortest path visiting all nodes problem in an undirected graph. Learn to apply breadth-first search combined with state compression using bitmasks to track visited nodes. Understand why BFS guarantees the shortest path and how revisiting states is avoided to optimize search efficiency.
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Statement
You are given an undirected connected graph with n nodes numbered from graph, where graph[i] contains all nodes that share an edge with node i.
Your task is to find the length of the shortest path that visits every node. You may:
Start from any node.
End at any node.
Revisit nodes and reuse edges as many times as needed.
Constraints:
ngraph.lengthn...