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Grokking the Coding Interview Patterns in Python

Sum of Distances in a Tree

Explore how to compute the sum of distances between each node and all others in a tree using depth-first search. Understand the problem constraints and develop an efficient solution. This lesson helps you grasp tree traversal techniques and apply them to challenges common in coding 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] ...