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Solution: Sum of Distances in a Tree

Explore how to compute the sum of distances from every node in a connected tree using two depth-first search traversals. This lesson guides you through initializing graph structures, calculating subtree sizes, and leveraging parent-child relationships to optimize distance calculations efficiently. By understanding this approach, you'll master a key tree algorithm pattern essential for coding interviews.

Statement

Given a connected, undirected tree with n nodes, labeled from 00 to n1n - 1, and n1n - 1 edges. The edges are provided in an array, where each element edges[i] =[ai,bi] ...