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Solution: Find Center of Star Graph

Explore how to find the central node in an undirected star graph by comparing nodes in the first two edges. Understand the optimized O(1) time solution that leverages the star graph's structure to identify the center quickly without counting all degrees.

Statement

Given an array edges where each element edges[i] = [ui, vi] represents an edge between nodes ui and vi in an undirected star graph,A star graph is a graph where one central node is connected to every other node. If there are n nodes, then the central node must be connected to all other n-1 nodes. find the central node of this star graph.

Note: A star graph is a graph where one central node is connected to every other node. This implies that a star graph with n nodes has exactly n - 1 edges.

Constraints:

  • 33 \leq n 103\leq 10^3 ...