leetcode-problemset/leetcode-cn/originData/similar-string-groups.json

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        "question": {
            "questionId": "869",
            "questionFrontendId": "839",
            "categoryTitle": "Algorithms",
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            "title": "Similar String Groups",
            "titleSlug": "similar-string-groups",
            "content": "<p>Two strings <code>X</code>&nbsp;and <code>Y</code>&nbsp;are similar if we can swap two letters (in different positions) of <code>X</code>, so that&nbsp;it equals <code>Y</code>. Also two strings <code>X</code> and <code>Y</code> are similar if they are equal.</p>\n\n<p>For example, <code>&quot;tars&quot;</code>&nbsp;and <code>&quot;rats&quot;</code>&nbsp;are similar (swapping at positions <code>0</code> and <code>2</code>), and <code>&quot;rats&quot;</code> and <code>&quot;arts&quot;</code> are similar, but <code>&quot;star&quot;</code> is not similar to <code>&quot;tars&quot;</code>, <code>&quot;rats&quot;</code>, or <code>&quot;arts&quot;</code>.</p>\n\n<p>Together, these form two connected groups by similarity: <code>{&quot;tars&quot;, &quot;rats&quot;, &quot;arts&quot;}</code> and <code>{&quot;star&quot;}</code>.&nbsp; Notice that <code>&quot;tars&quot;</code> and <code>&quot;arts&quot;</code> are in the same group even though they are not similar.&nbsp; Formally, each group is such that a word is in the group if and only if it is similar to at least one other word in the group.</p>\n\n<p>We are given a list <code>strs</code> of strings where every string in <code>strs</code> is an anagram of every other string in <code>strs</code>. How many groups are there?</p>\n\n<p>&nbsp;</p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> strs = [&quot;tars&quot;,&quot;rats&quot;,&quot;arts&quot;,&quot;star&quot;]\n<strong>Output:</strong> 2\n</pre>\n\n<p><strong>Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> strs = [&quot;omv&quot;,&quot;ovm&quot;]\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>1 &lt;= strs.length &lt;= 300</code></li>\n\t<li><code>1 &lt;= strs[i].length &lt;= 300</code></li>\n\t<li><code>strs[i]</code> consists of lowercase letters only.</li>\n\t<li>All words in <code>strs</code> have the same length and are anagrams of each other.</li>\n</ul>\n",
            "translatedTitle": "相似字符串组",
            "translatedContent": "<p>如果交换字符串&nbsp;<code>X</code> 中的两个不同位置的字母，使得它和字符串&nbsp;<code>Y</code> 相等，那么称 <code>X</code> 和 <code>Y</code> 两个字符串相似。如果这两个字符串本身是相等的，那它们也是相似的。</p>\n\n<p>例如，<code>\"tars\"</code> 和 <code>\"rats\"</code> 是相似的 (交换 <code>0</code> 与 <code>2</code> 的位置)；&nbsp;<code>\"rats\"</code> 和 <code>\"arts\"</code> 也是相似的，但是 <code>\"star\"</code> 不与 <code>\"tars\"</code>，<code>\"rats\"</code>，或 <code>\"arts\"</code> 相似。</p>\n\n<p>总之，它们通过相似性形成了两个关联组：<code>{\"tars\", \"rats\", \"arts\"}</code> 和 <code>{\"star\"}</code>。注意，<code>\"tars\"</code> 和 <code>\"arts\"</code> 是在同一组中，即使它们并不相似。形式上，对每个组而言，要确定一个单词在组中，只需要这个词和该组中至少一个单词相似。</p>\n\n<p>给你一个字符串列表 <code>strs</code>。列表中的每个字符串都是 <code>strs</code> 中其它所有字符串的一个字母异位词。请问 <code>strs</code> 中有多少个相似字符串组？</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1：</strong></p>\n\n<pre>\n<strong>输入：</strong>strs = [\"tars\",\"rats\",\"arts\",\"star\"]\n<strong>输出：</strong>2\n</pre>\n\n<p><strong>示例 2：</strong></p>\n\n<pre>\n<strong>输入：</strong>strs = [\"omv\",\"ovm\"]\n<strong>输出：</strong>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;= strs.length &lt;= 300</code></li>\n\t<li><code>1 &lt;= strs[i].length &lt;= 300</code></li>\n\t<li><code>strs[i]</code> 只包含小写字母。</li>\n\t<li><code>strs</code> 中的所有单词都具有相同的长度，且是彼此的字母异位词。</li>\n</ul>\n",
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