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Grokking the Coding Interview Patterns in C++

Solution: Sum of Distances in a Tree

Explore solving the sum of distances in a tree by applying two depth-first search traversals. Understand how to compute subtree sizes and propagate distance sums efficiently to all nodes, reducing redundant calculations and optimizing runtime complexity to linear time.

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Statement

Given a connected, undirected tree with n nodes, labeled from 00 to n−1n - 1, and n−1n - 1 edges. The edges are provided in an array, where each element edges[i] =[ai,bi] ...