leetcode-problemset/leetcode-cn/originData/critical-connections-in-a-network.json

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            "title": "Critical Connections in a Network",
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            "content": "<p>There are <code>n</code> servers numbered from <code>0</code> to <code>n - 1</code> connected by undirected server-to-server <code>connections</code> forming a network where <code>connections[i] = [a<sub>i</sub>, b<sub>i</sub>]</code> represents a connection between servers <code>a<sub>i</sub></code> and <code>b<sub>i</sub></code>. Any server can reach other servers directly or indirectly through the network.</p>\n\n<p>A <em>critical connection</em> is a connection that, if removed, will make some servers unable to reach some other server.</p>\n\n<p>Return all critical connections in the network in any order.</p>\n\n<p>&nbsp;</p>\n<p><strong>Example 1:</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2019/09/03/1537_ex1_2.png\" style=\"width: 198px; height: 248px;\" />\n<pre>\n<strong>Input:</strong> n = 4, connections = [[0,1],[1,2],[2,0],[1,3]]\n<strong>Output:</strong> [[1,3]]\n<strong>Explanation:</strong> [[3,1]] is also accepted.\n</pre>\n\n<p><strong>Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> n = 2, connections = [[0,1]]\n<strong>Output:</strong> [[0,1]]\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>2 &lt;= n &lt;= 10<sup>5</sup></code></li>\n\t<li><code>n - 1 &lt;= connections.length &lt;= 10<sup>5</sup></code></li>\n\t<li><code>0 &lt;= a<sub>i</sub>, b<sub>i</sub> &lt;= n - 1</code></li>\n\t<li><code>a<sub>i</sub> != b<sub>i</sub></code></li>\n\t<li>There are no repeated connections.</li>\n</ul>\n",
            "translatedTitle": "查找集群内的「关键连接」",
            "translatedContent": "<p>力扣数据中心有&nbsp;<code>n</code>&nbsp;台服务器，分别按从&nbsp;<code>0</code>&nbsp;到&nbsp;<code>n-1</code>&nbsp;的方式进行了编号。它们之间以「服务器到服务器」点对点的形式相互连接组成了一个内部集群，其中连接&nbsp;<code>connections</code> 是无向的。从形式上讲，<code>connections[i] = [a, b]</code>&nbsp;表示服务器 <code>a</code>&nbsp;和 <code>b</code>&nbsp;之间形成连接。任何服务器都可以直接或者间接地通过网络到达任何其他服务器。</p>\n\n<p><em>「关键连接」</em>&nbsp;是在该集群中的重要连接，也就是说，假如我们将它移除，便会导致某些服务器无法访问其他服务器。</p>\n\n<p>请你以任意顺序返回该集群内的所有 「关键连接」。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1：</strong></p>\n\n<p><strong><img alt=\"\" src=\"https://assets.leetcode-cn.com/aliyun-lc-upload/original_images/critical-connections-in-a-network.png\" style=\"height: 205px; width: 200px;\" /></strong></p>\n\n<pre>\n<strong>输入：</strong>n = 4, connections = [[0,1],[1,2],[2,0],[1,3]]\n<strong>输出：</strong>[[1,3]]\n<strong>解释：</strong>[[3,1]] 也是正确的。</pre>\n\n<p><strong>示例 2:</strong></p>\n\n<pre>\n<b>输入：</b>n = 2, connections = [[0,1]]\n<b>输出：</b>[[0,1]]\n</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= n &lt;= 10^5</code></li>\n\t<li><code>n-1 &lt;= connections.length &lt;= 10^5</code></li>\n\t<li><code>connections[i][0] != connections[i][1]</code></li>\n\t<li>不存在重复的连接</li>\n</ul>\n",
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