leetcode-problemset/leetcode-cn/originData/groups-of-special-equivalent-strings.json

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            "title": "Groups of Special-Equivalent Strings",
            "titleSlug": "groups-of-special-equivalent-strings",
            "content": "<p>You are given an array of strings of the same length <code>words</code>.</p>\n\n<p>In one <strong>move</strong>, you can swap any two even indexed characters or any two odd indexed characters of a string <code>words[i]</code>.</p>\n\n<p>Two strings <code>words[i]</code> and <code>words[j]</code> are <strong>special-equivalent</strong> if after any number of moves, <code>words[i] == words[j]</code>.</p>\n\n<ul>\n\t<li>For example, <code>words[i] = &quot;zzxy&quot;</code> and <code>words[j] = &quot;xyzz&quot;</code> are <strong>special-equivalent</strong> because we may make the moves <code>&quot;zzxy&quot; -&gt; &quot;xzzy&quot; -&gt; &quot;xyzz&quot;</code>.</li>\n</ul>\n\n<p>A <strong>group of special-equivalent strings</strong> from <code>words</code> is a non-empty subset of words such that:</p>\n\n<ul>\n\t<li>Every pair of strings in the group are special equivalent, and</li>\n\t<li>The group is the largest size possible (i.e., there is not a string <code>words[i]</code> not in the group such that <code>words[i]</code> is special-equivalent to every string in the group).</li>\n</ul>\n\n<p>Return <em>the number of <strong>groups of special-equivalent strings</strong> from </em><code>words</code>.</p>\n\n<p>&nbsp;</p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> words = [&quot;abcd&quot;,&quot;cdab&quot;,&quot;cbad&quot;,&quot;xyzz&quot;,&quot;zzxy&quot;,&quot;zzyx&quot;]\n<strong>Output:</strong> 3\n<strong>Explanation:</strong> \nOne group is [&quot;abcd&quot;, &quot;cdab&quot;, &quot;cbad&quot;], since they are all pairwise special equivalent, and none of the other strings is all pairwise special equivalent to these.\nThe other two groups are [&quot;xyzz&quot;, &quot;zzxy&quot;] and [&quot;zzyx&quot;].\nNote that in particular, &quot;zzxy&quot; is not special equivalent to &quot;zzyx&quot;.\n</pre>\n\n<p><strong>Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> words = [&quot;abc&quot;,&quot;acb&quot;,&quot;bac&quot;,&quot;bca&quot;,&quot;cab&quot;,&quot;cba&quot;]\n<strong>Output:</strong> 3\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= words.length &lt;= 1000</code></li>\n\t<li><code>1 &lt;= words[i].length &lt;= 20</code></li>\n\t<li><code>words[i]</code> consist of lowercase English letters.</li>\n\t<li>All the strings are of the same length.</li>\n</ul>\n",
            "translatedTitle": "特殊等价字符串组",
            "translatedContent": "<p>给你一个字符串数组 <code>words</code>。</p>\n\n<p>一步操作中，你可以交换字符串 <code>words[i]</code> 的任意两个偶数下标对应的字符或任意两个奇数下标对应的字符。</p>\n\n<p>对两个字符串&nbsp;<code>words[i]</code> 和 <code>words[j]</code> 而言，如果经过任意次数的操作，<code>words[i] == words[j]</code> ，那么这两个字符串是 <strong>特殊等价 </strong>的。</p>\n\n<ul>\n\t<li>例如，<code>words[i] = \"zzxy\"</code> 和 <code>words[j] = \"xyzz\"</code> 是一对 <strong>特殊等价</strong> 字符串，因为可以按 <code>\"zzxy\" -&gt; \"xzzy\" -&gt; \"xyzz\"</code> 的操作路径使&nbsp;<code>words[i] == words[j]</code> 。</li>\n</ul>\n\n<p>现在规定，<strong><code>words</code> </strong>的 <strong>一组特殊等价字符串 </strong>就是 <code>words</code> 的一个同时满足下述条件的非空子集：</p>\n\n<ul>\n\t<li>该组中的每一对字符串都是<strong> 特殊等价 </strong>的</li>\n\t<li>该组字符串已经涵盖了该类别中的所有特殊等价字符串，容量达到理论上的最大值（也就是说，如果一个字符串不在该组中，那么这个字符串就 <strong>不会</strong> 与该组内任何字符串特殊等价）</li>\n</ul>\n\n<p>返回 <code>words</code> 中 <strong>特殊等价字符串组</strong> 的数量。</p>\n\n<p>&nbsp;</p>\n\n<ul>\n</ul>\n\n<p><strong>示例 1：</strong></p>\n\n<pre>\n<strong>输入：</strong>words = [\"abcd\",\"cdab\",\"cbad\",\"xyzz\",\"zzxy\",\"zzyx\"]\n<strong>输出：</strong>3\n<strong>解释：</strong>\n其中一组为 [\"abcd\", \"cdab\", \"cbad\"]，因为它们是成对的特殊等价字符串，且没有其他字符串与这些字符串特殊等价。\n另外两组分别是 [\"xyzz\", \"zzxy\"] 和 [\"zzyx\"]。特别需要注意的是，\"zzxy\" 不与 \"zzyx\" 特殊等价。\n</pre>\n\n<p><strong>示例 2：</strong></p>\n\n<pre>\n<strong>输入：</strong>words = [\"abc\",\"acb\",\"bac\",\"bca\",\"cab\",\"cba\"]\n<strong>输出：</strong>3\n<strong>解释：</strong>3 组 [\"abc\",\"cba\"]，[\"acb\",\"bca\"]，[\"bac\",\"cab\"]\n</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= words.length &lt;= 1000</code></li>\n\t<li><code>1 &lt;= words[i].length &lt;= 20</code></li>\n\t<li>所有 <code>words[i]</code>&nbsp;都只由小写字母组成。</li>\n\t<li>所有 <code>words[i]</code>&nbsp;都具有相同的长度。</li>\n</ul>\n",
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