23 lines
584 B
Markdown
23 lines
584 B
Markdown
Given two strings `s1` and `s2`, return `true` _if_ `s2` _contains a permutation of_ `s1`_, or_ `false` _otherwise_.
|
|
|
|
In other words, return `true` if one of `s1`'s permutations is the substring of `s2`.
|
|
|
|
**Example 1:**
|
|
|
|
Input: s1 = "ab", s2 = "eidbaooo"
|
|
Output: true
|
|
Explanation: s2 contains one permutation of s1 ("ba").
|
|
|
|
|
|
**Example 2:**
|
|
|
|
Input: s1 = "ab", s2 = "eidboaoo"
|
|
Output: false
|
|
|
|
|
|
**Constraints:**
|
|
|
|
* `1 <= s1.length, s2.length <= 104`
|
|
* `s1` and `s2` consist of lowercase English letters.
|
|
|
|
https://leetcode.com/problems/permutation-in-string |