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Median is the middle value in an ordered integer list. If the size of the list is even, there is no middle value. So the median is the mean of the two 阅读全文
posted @ 2020-09-02 12:59
Schwifty
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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 permutati 阅读全文
posted @ 2020-09-02 05:28
Schwifty
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把上题的2换成k即可 public int lengthOfLongestSubstringKDistinct(String s, int k) { if (s == null || s.length() == 0 || k == 0) { return 0; } char[] sArr = s.t 阅读全文
posted @ 2020-09-02 05:00
Schwifty
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Given a string s , find the length of the longest substring t that contains at most 2 distinct characters. Example 1: Input: "eceba" Output: 3 Explana 阅读全文
posted @ 2020-09-02 04:59
Schwifty
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