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leetcode-problemset/leetcode-cn/originData/largest-substring-between-two-equal-characters.json
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"question": {
"questionId": "1746",
"questionFrontendId": "1624",
"categoryTitle": "Algorithms",
"boundTopicId": 448042,
"title": "Largest Substring Between Two Equal Characters",
"titleSlug": "largest-substring-between-two-equal-characters",
"content": "<p>Given a string <code>s</code>, return <em>the length of the longest substring between two equal characters, excluding the two characters.</em> If there is no such substring return <code>-1</code>.</p>\n\n<p>A <strong>substring</strong> is a contiguous sequence of characters within a string.</p>\n\n<p>&nbsp;</p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> s = &quot;aa&quot;\n<strong>Output:</strong> 0\n<strong>Explanation:</strong> The optimal substring here is an empty substring between the two <code>&#39;a&#39;s</code>.</pre>\n\n<p><strong>Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> s = &quot;abca&quot;\n<strong>Output:</strong> 2\n<strong>Explanation:</strong> The optimal substring here is &quot;bc&quot;.\n</pre>\n\n<p><strong>Example 3:</strong></p>\n\n<pre>\n<strong>Input:</strong> s = &quot;cbzxy&quot;\n<strong>Output:</strong> -1\n<strong>Explanation:</strong> There are no characters that appear twice in s.\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;= 300</code></li>\n\t<li><code>s</code> contains only lowercase English letters.</li>\n</ul>\n",
"translatedTitle": "两个相同字符之间的最长子字符串",
"translatedContent": "<p>给你一个字符串 <code>s</code>,请你返回 <strong>两个相同字符之间的最长子字符串的长度</strong> <em></em>计算长度时不含这两个字符。如果不存在这样的子字符串,返回 <code>-1</code> 。</p>\n\n<p><strong>子字符串</strong> 是字符串中的一个连续字符序列。</p>\n\n<p> </p>\n\n<p><strong>示例 1</strong></p>\n\n<pre><strong>输入:</strong>s = \"aa\"\n<strong>输出:</strong>0\n<strong>解释:</strong>最优的子字符串是两个 'a' 之间的空子字符串。</pre>\n\n<p><strong>示例 2</strong></p>\n\n<pre><strong>输入:</strong>s = \"abca\"\n<strong>输出:</strong>2\n<strong>解释:</strong>最优的子字符串是 \"bc\" 。\n</pre>\n\n<p><strong>示例 3</strong></p>\n\n<pre><strong>输入:</strong>s = \"cbzxy\"\n<strong>输出:</strong>-1\n<strong>解释:</strong>s 中不存在出现出现两次的字符,所以返回 -1 。\n</pre>\n\n<p><strong>示例 4</strong></p>\n\n<pre><strong>输入:</strong>s = \"cabbac\"\n<strong>输出:</strong>4\n<strong>解释:</strong>最优的子字符串是 \"abba\" ,其他的非最优解包括 \"bb\" 和 \"\" 。\n</pre>\n\n<p> </p>\n\n<p><strong>提示:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= s.length &lt;= 300</code></li>\n\t<li><code>s</code> 只含小写英文字母</li>\n</ul>\n",
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"hints": [
"Try saving the first and last position of each character",
"Try finding every pair of indexes with equal characters"
],
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"style": "LEETCODE",
"exampleTestcases": "\"aa\"\n\"abca\"\n\"cbzxy\"",
"__typename": "QuestionNode"
}
}
}