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@@ -12,7 +12,7 @@
"translatedContent": "<p><strong>「快乐前缀」</strong>&nbsp;是在原字符串中既是&nbsp;<strong>非空</strong> 前缀也是后缀(不包括原字符串自身)的字符串。</p>\n\n<p>给你一个字符串 <code>s</code>,请你返回它的 <strong>最长快乐前缀</strong>。如果不存在满足题意的前缀,则返回一个空字符串<meta charset=\"UTF-8\" />&nbsp;<code>\"\"</code>&nbsp;。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1</strong></p>\n\n<pre>\n<strong>输入:</strong>s = \"level\"\n<strong>输出:</strong>\"l\"\n<strong>解释:</strong>不包括 s 自己,一共有 4 个前缀(\"l\", \"le\", \"lev\", \"leve\")和 4 个后缀(\"l\", \"el\", \"vel\", \"evel\")。最长的既是前缀也是后缀的字符串是 \"l\" 。\n</pre>\n\n<p><strong>示例 2</strong></p>\n\n<pre>\n<strong>输入:</strong>s = \"ababab\"\n<strong>输出:</strong>\"abab\"\n<strong>解释:</strong>\"abab\" 是最长的既是前缀也是后缀的字符串。题目允许前后缀在原字符串中重叠。\n</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示:</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> 只含有小写英文字母</li>\n</ul>\n",
"isPaidOnly": false,
"difficulty": "Hard",
"likes": 82,
"likes": 89,
"dislikes": 0,
"isLiked": null,
"similarQuestions": "[]",
@@ -155,7 +155,7 @@
"__typename": "CodeSnippetNode"
}
],
"stats": "{\"totalAccepted\": \"9.8K\", \"totalSubmission\": \"23.3K\", \"totalAcceptedRaw\": 9785, \"totalSubmissionRaw\": 23252, \"acRate\": \"42.1%\"}",
"stats": "{\"totalAccepted\": \"10.3K\", \"totalSubmission\": \"24.3K\", \"totalAcceptedRaw\": 10340, \"totalSubmissionRaw\": 24320, \"acRate\": \"42.5%\"}",
"hints": [
"Use Longest Prefix Suffix (KMP-table) or String Hashing."
],