{ "data": { "question": { "questionId": "1916", "questionFrontendId": "1791", "boundTopicId": null, "title": "Find Center of Star Graph", "titleSlug": "find-center-of-star-graph", "content": "

There is an undirected star graph consisting of n nodes labeled from 1 to n. A star graph is a graph where there is one center node and exactly n - 1 edges that connect the center node with every other node.

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You are given a 2D integer array edges where each edges[i] = [ui, vi] indicates that there is an edge between the nodes ui and vi. Return the center of the given star graph.

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Example 1:

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\nInput: edges = [[1,2],[2,3],[4,2]]\nOutput: 2\nExplanation: As shown in the figure above, node 2 is connected to every other node, so 2 is the center.\n
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Example 2:

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\nInput: edges = [[1,2],[5,1],[1,3],[1,4]]\nOutput: 1\n
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Constraints:

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OpenJDK 17. Java 8 features such as lambda expressions and stream API can be used.

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Python 2.7.12.

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Python 3.10.

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