problem0567

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Published: Jul 25, 2019 License: MIT Imports: 0 Imported by: 0

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567. Permutation in String

题目

Given two strings s1 and s2, write a function to return true if s2 contains the permutation of s1. In other words, one of the first string's permutations is the substring of the second string.

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

Note:

  1. The input strings only contain lower case letters.
  2. The length of both given strings is in range [1, 10,000].

解题思路

见程序注释

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