leetcode-problemset/leetcode-cn/originData/find-center-of-star-graph.json

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            "questionId": "1916",
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            "categoryTitle": "Algorithms",
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            "title": "Find Center of Star Graph",
            "titleSlug": "find-center-of-star-graph",
            "content": "<p>There is an undirected <strong>star</strong> graph consisting of <code>n</code> nodes labeled from <code>1</code> to <code>n</code>. A star graph is a graph where there is one <strong>center</strong> node and <strong>exactly</strong> <code>n - 1</code> edges that connect the center node with every other node.</p>\n\n<p>You are given a 2D integer array <code>edges</code> where each <code>edges[i] = [u<sub>i</sub>, v<sub>i</sub>]</code> indicates that there is an edge between the nodes <code>u<sub>i</sub></code> and <code>v<sub>i</sub></code>. Return the center of the given star graph.</p>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2021/02/24/star_graph.png\" style=\"width: 331px; height: 321px;\" />\n<pre>\n<strong>Input:</strong> edges = [[1,2],[2,3],[4,2]]\n<strong>Output:</strong> 2\n<strong>Explanation:</strong> As shown in the figure above, node 2 is connected to every other node, so 2 is the center.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> edges = [[1,2],[5,1],[1,3],[1,4]]\n<strong>Output:</strong> 1\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>3 &lt;= n &lt;= 10<sup>5</sup></code></li>\n\t<li><code>edges.length == n - 1</code></li>\n\t<li><code>edges[i].length == 2</code></li>\n\t<li><code>1 &lt;= u<sub>i,</sub> v<sub>i</sub> &lt;= n</code></li>\n\t<li><code>u<sub>i</sub> != v<sub>i</sub></code></li>\n\t<li>The given <code>edges</code> represent a valid star graph.</li>\n</ul>\n",
            "translatedTitle": "找出星型图的中心节点",
            "translatedContent": "<p>有一个无向的 <strong>星型</strong> 图，由 <code>n</code> 个编号从 <code>1</code> 到 <code>n</code> 的节点组成。星型图有一个 <strong>中心</strong> 节点，并且恰有 <code>n - 1</code> 条边将中心节点与其他每个节点连接起来。</p>\n\n<p>给你一个二维整数数组 <code>edges</code> ，其中 <code>edges[i] = [u<sub>i</sub>, v<sub>i</sub>]</code> 表示在节点 <code>u<sub>i</sub></code> 和 <code>v<sub>i</sub></code> 之间存在一条边。请你找出并返回 <code>edges</code> 所表示星型图的中心节点。</p>\n\n<p> </p>\n\n<p><strong>示例 1：</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode-cn.com/aliyun-lc-upload/uploads/2021/03/14/star_graph.png\" style=\"width: 331px; height: 321px;\" />\n<pre>\n<strong>输入：</strong>edges = [[1,2],[2,3],[4,2]]\n<strong>输出：</strong>2\n<strong>解释：</strong>如上图所示，节点 2 与其他每个节点都相连，所以节点 2 是中心节点。\n</pre>\n\n<p><strong>示例 2：</strong></p>\n\n<pre>\n<strong>输入：</strong>edges = [[1,2],[5,1],[1,3],[1,4]]\n<strong>输出：</strong>1\n</pre>\n\n<p> </p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>3 <= n <= 10<sup>5</sup></code></li>\n\t<li><code>edges.length == n - 1</code></li>\n\t<li><code>edges[i].length == 2</code></li>\n\t<li><code>1 <= u<sub>i,</sub> v<sub>i</sub> <= n</code></li>\n\t<li><code>u<sub>i</sub> != v<sub>i</sub></code></li>\n\t<li>题目数据给出的 <code>edges</code> 表示一个有效的星型图</li>\n</ul>\n",
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