Difficulty: Hard  More:[目录]LeetCode Java实现 Description Given a string S, find the length of the longest substring T that contains at most two distinct characters.For example,Given S = “eceba”,T is "ece" which its length is 3. Intuition 方法一:假设有一个…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 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…

题目如下: 解题思路:题目要找出一段连续的子串内所有字符出现的次数必须要大于k,因此出现次数小于k的字符就一定不能出现,所以就可以以这些字符作为分隔符分割成多个子串,然后继续对子串递归,找出符合条件的子串. 代码如下: class Solution(object): res = 0 def splitToSubs(self,subs,k): dic = {} for i in subs: if i not in dic: dic[i] = 1 else: dic[i] += 1 exclusiv…

Longest Substring Without Repeating Characters 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 lengt…

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 Explanation: tis "ece" which its length is 3. Example 2: Input: "ccaabbb" Output:…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 公众号:负雪明烛 本文关键词:无重复字符,最长子串,题解,leetcode, 力扣,python, c++, java 目录 题目描述 题目大意 解题方法 解法一:虫取法+set 方法二:一次遍历+字典 日期 题目地址:https://leetcode.com/problems/longest-substring-without-repeating-characters/descrip…

题目: 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…

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 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 a string, find the length of the longest substring T that contains at most 2 distinct characters. For example, Given s = "eceba", T is "ece" which its length is 3. 给一个字符串,求这个字符串中,由两个字母组成的,连续的最长子串的长度. 虽然是hard,但是感觉并没有什么难度. 用ch1和pre…