针对第一种解法,我们还可以将HashSet换成数组,用数组来判断字符是否重复出现,其他思路一样。 publicintlengthOfLongestSubstring2(String s){int[] set =newint[256];intn=s.length(), left =0, right =0;intresult=0;for(inti=0; i<n; i++) { left = i; right = i;while(right < n && ++se...
解法一:枚举出字符串的所有子串,去掉有重复字符的那部分,最后找出其中长度最长的那个。最笨的办法,时间复杂度O(n^4)。 intmax_unique_substring1(char*str) {intmaxlen =0;intbegin =0;intn =strlen(str);for(inti=0; i<n; ++i)for(intj=1; j<n; ++j) {intflag =0;for(intm=i; m<=j; ++...
3. 无重复字符的最长子串 方法一:滑动窗口 class Solution: def lengthOfLongestSubstring(self, s: str) -> int: d = {} # element:index ,element的位置 # subStr = '' left = ans = 0 for i, c in enumerate(s): # if c in subStr: # 发现有重复字符时, if c in s[left:i]: # if ...
Can you solve this real interview question? Longest Substring Without Repeating Characters - Given a string s, find the length of the longest substring without duplicate characters. Example 1: Input: s = "abcabcbb" Output: 3 Explanation: The answer
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. 题意就不说了,这道题是求的是最大的不重复的子串,求解重复子串可以类似采用最长公共子串的解法。
Can you solve this real interview question? Longest Substring Without Repeating Characters - Given a string s, find the length of the longest substring without duplicate characters. Example 1: Input: s = "abcabcbb" Output: 3 Explanation: The answer
Leetcode3——Longest Substring Without Repeating Characters 文章作者:Tyan 博客:noahsnail.com|CSDN|简书 1. 问题描述 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....
3. Longest Substring Without Repeating Characters 题目 Given a string, find the length of the longest substring without repeating characters. Example 1: Input: "abcabcbb" Output: 3 Explanation: The answer is "abc", with the length of 3. ...
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leetcode5 - Longest Palindromic Substring leetcode 5 原题链接[英]:Longest Palindromic Substring 原题链接[中]:最长回文子串 题目描述 Given a string s, return the longest palindromic substring in s. Example 1: Example 2: Example 3: Example 4: Constraints: 1 <= s......