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Grokking the Coding Interview Patterns in C++

Solution: Graph Valid Tree

Explore how to determine if a graph with n nodes and edges forms a valid tree by checking connectivity and cycles. Learn to implement an adjacency list and depth-first search to solve this problem efficiently, understanding key coding interview patterns related to graph traversal and validation.

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Statement

Given n as the number of nodes and an array of the edges of a graph, find out if the graph is a valid tree. The nodes of the graph are labeled from 00 to n−1n - 1, and edges[i]=[x,y]edges[i] = [x, y] represents an undirected edge connecting the nodes xx and yy ...