LeetCode：3.Longest Substring Without Repeating Characters

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LeetCode：3.Longest Substring Without Repeating Characters

思路:看到题目首先想到最大字符串匹配KMP算法 public static int lengthOfLongestSubstring(String s) { int maxLength = 0; StringBuilder sb = new StringBuilder(s); a:for(int i = 0;i<sb.length();i++){ StringBuilder sb2 = new StringBuilder(""); sb2.append(sb.substring(…

Python 解leetcode：3. Longest Substring Without Repeating Characters

题目描述:求一个字符串的不含重复字符的最长连续子串的长度: 思路: 使用一个哈希表保存字符出现的位置: 使用left和right分别表示子串的最左和最右字符的下标: 遍历字符串,如果当前字符在哈希表中并且当前字符在哈希中的位置大于left,表明left和right之间存在和right索引上相同的字符,此时把left置为当前值在哈希表中的值: 把当前索引值+1,表示是第几个字符,求出当前最大长度: 3-4步重复,直到获得遍历完成: 感觉这是个动态规划题,暂时没用动态规划分析,后续再说. class…

【一天一道LeetCode】 #3 Longest Substring Without Repeating Characters

一天一道LeetCode (一)题目 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"…

【LeetCode OJ】Longest Substring Without Repeating Characters

题目链接:https://leetcode.com/problems/longest-substring-without-repeating-characters/ 题目:Given a string, find the length of the longest substring without repeating characters. For example, the longest substring without repeating letters for "abcabcbb&qu…