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Grokking the Coding Interview Patterns in Go

Solution: Closest Node to Path in Tree

Understand how to find the closest node on a path between two nodes in a tree by using breadth-first search twice. This lesson teaches reconstructing paths and computing shortest distances to solve queries efficiently within tree data structures.

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Statement

You are given a positive integer, n, representing the number of nodes in a tree, numbered from 00 to n−1n-1. You are also given a 2D integer array edges of length n−1n-1 ...