leetcode-problemset/leetcode-cn/originData/minimum-length-of-string-after-deleting-similar-ends.json

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            "categoryTitle": "Algorithms",
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            "title": "Minimum Length of String After Deleting Similar Ends",
            "titleSlug": "minimum-length-of-string-after-deleting-similar-ends",
            "content": "<p>Given a string <code>s</code> consisting only of characters <code>&#39;a&#39;</code>, <code>&#39;b&#39;</code>, and <code>&#39;c&#39;</code>. You are asked to apply the following algorithm on the string any number of times:</p>\n\n<ol>\n\t<li>Pick a <strong>non-empty</strong> prefix from the string <code>s</code> where all the characters in the prefix are equal.</li>\n\t<li>Pick a <strong>non-empty</strong> suffix from the string <code>s</code> where all the characters in this suffix are equal.</li>\n\t<li>The prefix and the suffix should not intersect at any index.</li>\n\t<li>The characters from the prefix and suffix must be the same.</li>\n\t<li>Delete both the prefix and the suffix.</li>\n</ol>\n\n<p>Return <em>the <strong>minimum length</strong> of </em><code>s</code> <em>after performing the above operation any number of times (possibly zero times)</em>.</p>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> s = &quot;ca&quot;\n<strong>Output:</strong> 2\n<strong>Explanation: </strong>You can&#39;t remove any characters, so the string stays as is.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> s = &quot;cabaabac&quot;\n<strong>Output:</strong> 0\n<strong>Explanation:</strong> An optimal sequence of operations is:\n- Take prefix = &quot;c&quot; and suffix = &quot;c&quot; and remove them, s = &quot;abaaba&quot;.\n- Take prefix = &quot;a&quot; and suffix = &quot;a&quot; and remove them, s = &quot;baab&quot;.\n- Take prefix = &quot;b&quot; and suffix = &quot;b&quot; and remove them, s = &quot;aa&quot;.\n- Take prefix = &quot;a&quot; and suffix = &quot;a&quot; and remove them, s = &quot;&quot;.</pre>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n\n<pre>\n<strong>Input:</strong> s = &quot;aabccabba&quot;\n<strong>Output:</strong> 3\n<strong>Explanation:</strong> An optimal sequence of operations is:\n- Take prefix = &quot;aa&quot; and suffix = &quot;a&quot; and remove them, s = &quot;bccabb&quot;.\n- Take prefix = &quot;b&quot; and suffix = &quot;bb&quot; and remove them, s = &quot;cca&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> only consists of characters <code>&#39;a&#39;</code>, <code>&#39;b&#39;</code>, and <code>&#39;c&#39;</code>.</li>\n</ul>\n",
            "translatedTitle": "删除字符串两端相同字符后的最短长度",
            "translatedContent": "<p>给你一个只包含字符 <code>'a'</code>，<code>'b'</code> 和 <code>'c'</code> 的字符串 <code>s</code> ，你可以执行下面这个操作（5 个步骤）任意次：</p>\n\n<ol>\n\t<li>选择字符串 <code>s</code> 一个 <strong>非空</strong> 的前缀，这个前缀的所有字符都相同。</li>\n\t<li>选择字符串 <code>s</code> 一个 <strong>非空</strong> 的后缀，这个后缀的所有字符都相同。</li>\n\t<li>前缀和后缀在字符串中任意位置都不能有交集。</li>\n\t<li>前缀和后缀包含的所有字符都要相同。</li>\n\t<li>同时删除前缀和后缀。</li>\n</ol>\n\n<p>请你返回对字符串 <code>s</code> 执行上面操作任意次以后（可能 0 次），能得到的 <strong>最短长度</strong> 。</p>\n\n<p> </p>\n\n<p><strong>示例 1：</strong></p>\n\n<pre>\n<b>输入：</b>s = \"ca\"\n<b>输出：</b>2\n<strong>解释：</strong>你没法删除任何一个字符，所以字符串长度仍然保持不变。\n</pre>\n\n<p><strong>示例 2：</strong></p>\n\n<pre>\n<b>输入：</b>s = \"cabaabac\"\n<b>输出：</b>0\n<b>解释：</b>最优操作序列为：\n- 选择前缀 \"c\" 和后缀 \"c\" 并删除它们，得到 s = \"abaaba\" 。\n- 选择前缀 \"a\" 和后缀 \"a\" 并删除它们，得到 s = \"baab\" 。\n- 选择前缀 \"b\" 和后缀 \"b\" 并删除它们，得到 s = \"aa\" 。\n- 选择前缀 \"a\" 和后缀 \"a\" 并删除它们，得到 s = \"\" 。</pre>\n\n<p><strong>示例 3：</strong></p>\n\n<pre>\n<b>输入：</b>s = \"aabccabba\"\n<b>输出：</b>3\n<b>解释：</b>最优操作序列为：\n- 选择前缀 \"aa\" 和后缀 \"a\" 并删除它们，得到 s = \"bccabb\" 。\n- 选择前缀 \"b\" 和后缀 \"bb\" 并删除它们，得到 s = \"cca\" 。\n</pre>\n\n<p> </p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>1 <= s.length <= 10<sup>5</sup></code></li>\n\t<li><code>s</code> 只包含字符 <code>'a'</code>，<code>'b'</code> 和 <code>'c'</code> 。</li>\n</ul>\n",
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