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Grokking the Coding Interview Patterns in C#

Solution: Find Center of Star Graph

Explore how to find the center of a star graph by leveraging its properties. Learn an optimized approach that identifies the central node in constant time by checking the first two edges, enhancing your understanding of graph patterns and efficient algorithms.

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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:

  • 3≤3 \leq n ≤103\leq 10^3 ...