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 than k times. Example 1: Input: s = "aaabb", k = 3 Output: 3 The longest substring is "aaa"
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 than k times. Example 1: Input: s = "aaabb", k = 3 Output: 3 The longest substring is "aaa"
Given a string, find the length of the longest substring without repeating characters.(请从子字符串中找出一个最长的不包含重复字符的子字符串) 首先定义函数f(i)表示以第i个字符结尾的不包含重复字符的子字符串的最大长度.我们从左到右扫描字符串中的每个字符.当我们计算第i个字符时,我们已经知道了f(i-1).如果第i个字符之前在字符串中没有出现过,那么f(i)=f(i-1) + 1,显然f(0)=1.如果第i个
题目 最长无重复字符的子串给定一个字符串,请找出其中无重复字符的最长子字符串. 例如,在"abcabcbb"中,其无重复字符的最长子字符串是"abc",其长度为 3. 对于,"bbbbb",其无重复字符的最长子字符串为"b",长度为1. 解题 利用HashMap,map中不存在就一直加入,存在的时候,找到相同字符的位置,情况map,更改下标 public class Solution { /** * @param s: a s
