{ "data": { "question": { "questionId": "567", "questionFrontendId": "567", "categoryTitle": "Algorithms", "boundTopicId": 1696, "title": "Permutation in String", "titleSlug": "permutation-in-string", "content": "

Given two strings s1 and s2, return true if s2 contains a permutation of s1, or false otherwise.

\n\n

In other words, return true if one of s1's permutations is the substring of s2.

\n\n

 

\n

Example 1:

\n\n
\nInput: s1 = "ab", s2 = "eidbaooo"\nOutput: true\nExplanation: s2 contains one permutation of s1 ("ba").\n
\n\n

Example 2:

\n\n
\nInput: s1 = "ab", s2 = "eidboaoo"\nOutput: false\n
\n\n

 

\n

Constraints:

\n\n\n", "translatedTitle": "字符串的排列", "translatedContent": "

给你两个字符串 s1 和 s2 ，写一个函数来判断 s2 是否包含 s1 的排列。如果是，返回 true ；否则，返回 false 。

\n\n

换句话说，s1 的排列之一是 s2 的 子串 。

\n\n

 

\n\n

示例 1：

\n\n
\n输入：s1 = \"ab\" s2 = \"eidbaooo\"\n输出：true\n解释：s2 包含 s1 的排列之一 (\"ba\").\n
\n\n

示例 2：

\n\n
\n输入：s1= \"ab\" s2 = \"eidboaoo\"\n输出：false\n
\n\n

 

\n\n

提示：

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