Given a string, find the length of the longest substring without repeating characters. Examples: Given"abcabcbb", the answer is"abc", which the length is 3. Given"bbbbb", the answer is"b", with the length of 1. Given"pwwkew", the answer is"wke", with the length of 3. Note that...
1classSolution {2public:3intlengthOfLongestSubstring(strings) {4map<char,int>ext;5intid_now =0;6intlen =s.length();7intans =0,cnt =0;8while(id_now<len){9if(ext.find(s[id_now])!=ext.end()){10id_now = ext[s[id_now]]+1;11ans =max(ans,cnt);12ext.clear();13cnt =0;...
Given "pwwkew", the answer is "wke", with the length of 3. Note that the answer must be a substring, "pwke" is a subsequence and not a substring. */ public class Solution { public static int lengthOfLongestSubstring(String s) { //如果是空的话 返回0 if(s == null || s.length...
Given a string, find the length of thelongest substringwithout repeating characters. Examples: Given"abcabcbb", the answer is"abc", which the length is 3. Given"bbbbb", the answer is"b", with the length of 1. Given"pwwkew", the answer is"wke", with the length of 3. Note that th...
Given a string, find the length of the longest substring without repeating characters. Examples: Given "abcabcbb", the answer is "abc", which the length is 3. Given "bbbbb", the answer is "b", with the length of 1. Given "pwwkew", the answer is "wke", with the length of 3. ...
https://leetcode.com/problems/longest-substring-with-at-least-k-repeating-characters/description/ 解题方法: 用递归的方法,现在当前字符串中找出出现次数小于k次的字符,根据不合格的字符将当前字符分割成一个个子串。重复分割过程,找出最大的合格子串长度。
Given a stringsand an integerk, returnthe length of the longest substring ofssuch that the frequency of each character in this substring is greater than or equal tok. if no such substring exists, return 0. Example 1: Input:s = "aaabb", k = 3Output:3Explanation:The longest substring is...
Longest Substring Without Repeating Characters Example 1: Input: s = "abcabcbb" Output: 3 Explanation: The answer is "abc", with the length of 3. Example 2: Input: s = "bbbbb" Output: 1 Explanation: The answer is "b", with the length of 1. Example 3: Input: s = "pwwkew" Out...
Given a string, find the length of the longest substring without repeating characters. For example, the longest substring without repeating letters for "abcabcbb" is "abc", which the length is 3. For "bbbbb" the longest substring is "b", with the length of 1. ...
0387. First Unique Character in a String 0389. Find the Difference 0390. Elimination Game 0391. Perfect Rectangle 0392. Is Subsequence 0393. U T F 8 Validation 0394. Decode String 0395. Longest Substring With at Least K Repeating Characters 0396. Rotate Function 0397. Integer Replacement 0399...