leetcode-problemset/leetcode-cn/originData/number-of-good-ways-to-split-a-string.json

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            "title": "Number of Good Ways to Split a String",
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            "content": "<p>You are given a string <code>s</code>.</p>\n\n<p>A split is called <strong>good</strong> if you can split <code>s</code> into two non-empty strings <code>s<sub>left</sub></code> and <code>s<sub>right</sub></code> where their concatenation is equal to <code>s</code> (i.e., <code>s<sub>left</sub> + s<sub>right</sub> = s</code>) and the number of distinct letters in <code>s<sub>left</sub></code> and <code>s<sub>right</sub></code> is the same.</p>\n\n<p>Return <em>the number of <strong>good splits</strong> you can make in <code>s</code></em>.</p>\n\n<p>&nbsp;</p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> s = &quot;aacaba&quot;\n<strong>Output:</strong> 2\n<strong>Explanation:</strong> There are 5 ways to split <code>&quot;aacaba&quot;</code> and 2 of them are good. \n(&quot;a&quot;, &quot;acaba&quot;) Left string and right string contains 1 and 3 different letters respectively.\n(&quot;aa&quot;, &quot;caba&quot;) Left string and right string contains 1 and 3 different letters respectively.\n(&quot;aac&quot;, &quot;aba&quot;) Left string and right string contains 2 and 2 different letters respectively (good split).\n(&quot;aaca&quot;, &quot;ba&quot;) Left string and right string contains 2 and 2 different letters respectively (good split).\n(&quot;aacab&quot;, &quot;a&quot;) Left string and right string contains 3 and 1 different letters respectively.\n</pre>\n\n<p><strong>Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> s = &quot;abcd&quot;\n<strong>Output:</strong> 1\n<strong>Explanation:</strong> Split the string as follows (&quot;ab&quot;, &quot;cd&quot;).\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= s.length &lt;= 10<sup>5</sup></code></li>\n\t<li><code>s</code> consists of only lowercase English letters.</li>\n</ul>\n",
            "translatedTitle": "字符串的好分割数目",
            "translatedContent": "<p>给你一个字符串&nbsp;<code>s</code>&nbsp;，一个分割被称为 「好分割」&nbsp;当它满足：将&nbsp;<code>s</code>&nbsp;分割成 2 个字符串&nbsp;<code>p</code> 和&nbsp;<code>q</code>&nbsp;，它们连接起来等于&nbsp;<code>s</code>&nbsp;且 <code>p</code>&nbsp;和 <code>q</code>&nbsp;中不同字符的数目相同。</p>\n\n<p>请你返回 <code>s</code>&nbsp;中好分割的数目。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1：</strong></p>\n\n<pre><strong>输入：</strong>s = &quot;aacaba&quot;\n<strong>输出：</strong>2\n<strong>解释：</strong>总共有 5 种分割字符串 <code>&quot;aacaba&quot;</code> 的方法，其中 2 种是好分割。\n(&quot;a&quot;, &quot;acaba&quot;) 左边字符串和右边字符串分别包含 1 个和 3 个不同的字符。\n(&quot;aa&quot;, &quot;caba&quot;) 左边字符串和右边字符串分别包含 1 个和 3 个不同的字符。\n(&quot;aac&quot;, &quot;aba&quot;) 左边字符串和右边字符串分别包含 2 个和 2 个不同的字符。这是一个好分割。\n(&quot;aaca&quot;, &quot;ba&quot;) 左边字符串和右边字符串分别包含 2 个和 2 个不同的字符。这是一个好分割。\n(&quot;aacab&quot;, &quot;a&quot;) 左边字符串和右边字符串分别包含 3 个和 1 个不同的字符。\n</pre>\n\n<p><strong>示例 2：</strong></p>\n\n<pre><strong>输入：</strong>s = &quot;abcd&quot;\n<strong>输出：</strong>1\n<strong>解释：</strong>好分割为将字符串分割成 (&quot;ab&quot;, &quot;cd&quot;) 。\n</pre>\n\n<p><strong>示例 3：</strong></p>\n\n<pre><strong>输入：</strong>s = &quot;aaaaa&quot;\n<strong>输出：</strong>4\n<strong>解释：</strong>所有分割都是好分割。</pre>\n\n<p><strong>示例 4：</strong></p>\n\n<pre><strong>输入：</strong>s = &quot;acbadbaada&quot;\n<strong>输出：</strong>2\n</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>s</code>&nbsp;只包含小写英文字母。</li>\n\t<li><code>1 &lt;= s.length &lt;= 10^5</code></li>\n</ul>\n",
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