Longest Substring with At Most Two Distinct Characters Longest Substring Without Repeating Characters 参考资料: https://leetcode.com/problems/longest-substring-with-at-least-k-repeating-characters/ https://leetcode.com/problems/longest-substring-with-at-least-k-repeating-characters/discuss/87834/onlogn-...
c.use while can solve all problems ,needn't use if else if code part: classSolution {public:intlengthOfLongestSubstringKDistinct(strings,intk) { unordered_map<char,int>hash;intleft =0, Max =0;for(inti =0; i < s.size(); i++) { hash[s[i]]++;while(hash.size()>k) { hash[s...
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别人非常棒的做法:sliding window,while loop里面每次循环都会尝试更新max,所以每次更新之前都是把l, r调整到合适的位置,也就是说,一旦r移动到超出K distinct char限制,l也要更新使k distinct char重新满足,l更新是在max更新之前 1publicclassSolution {2publicintlengthOfLongestSubstringKDistinct(String s,intk) {...
题目地址: https://leetcode.com/problems/longest-substring-with-at-least-k-repeating-characters/description/ 题目描述: Find the length of the longest substring T of a given string (consists of lowercase letters only) such that every character in T appears no less ...
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The longest substring is "ababb", as 'a' is repeated 2 times and 'b' is repeated 3 times. 解题之法 class Solution{public:intlongestSubstring(string s,intk){intres=0,i=0,n=s.size();while(i+k<=n){intm[26]={0},mask=0,max_idx=i;for(intj=i;j<n;++j){intt=s[j]-'a';...
classSolution(object):deflengthOfLongestSubstring(self,s:str)->int:ifnots:return0iflen(s)<=1:returnlen(s)locations=[-1foriinrange(256)]index=-1m=0fori,vinenumerate(s):if(locations[ord(v)]>index):index=locations[ord(v)]m=max(m,i-index)locations[ord(v)]=ireturnm...
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Given a string, find the length of thelongest substringwithout repeating characters. Example 1: Input:"abcabcbb"Output:3Explanation:The answer is"abc", with the length of 3. Example 2: Input:"bbbbb"Output:1Explanation:The answer is"b", with the length of 1. ...