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Grokking the Coding Interview Patterns in C#

Sum of Distances in a Tree

Explore solving the sum of distances problem in a tree using depth-first search techniques. Understand how to represent trees as node-edge arrays and compute total distances for each node. This lesson helps you develop efficient solutions to tree traversal questions commonly found in technical interviews.

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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]= [a_i, b_i] ...