Solution: Find Center of Star Graph

Understand how to determine the center of a star graph by leveraging its structure. This lesson teaches you a method to identify the central node by comparing just the first two edges, optimizing your solution to constant time. You will learn to apply this approach for efficient graph problem-solving in coding interviews.

We'll cover the following...

Statement
Solution
- Time complexity
- Space complexity

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:

$3 \leq$ n $\leq 10^3$ ...