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  1. Graph

Tree Diameter

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Last updated 4 years ago

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DFS Twice

  • Pick a random node i.

  • DFS to find the furthest node j to node i.

  • DFS to find the furthest node k to node j.

The distance between j and k is the tree's diameter.

See

Problems

proof
1617. Count Subtrees With Max Distance Between Cities (Hard)