leetcode problem (5) Longest Palindromic Substring

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leetcode problem (5) Longest Palindromic Substring

最长回文子串: 1. 暴力搜索时间复杂度O(n^3) 2. 动态规划 dp[i][j] 表示子串s[i…j]是否是回文初始化:dp[i][i] = true (0 <= i <= n-1); dp[i][i-1] = true (1 <= i <= n-1); 其余的初始化为false dp[i][j] = (s[i] == s[j] && dp[i+1][j-1] == true) 时间复杂度O(n^2),空间O(n^2) 3. 以某个元素为中心,分别…

【一天一道LeetCode】#5 Longest Palindromic Substring

一天一道LeetCode系列 (一)题目 Given a string S, find the longest palindromic substring in S. You may assume that the maximum length of S is 1000, and there exists one unique longest palindromic substring. 题意:求一个字符串的最长回文字串. (二)解题 1.中心扩展法看到这个题首先想到的就是中心扩展法,遍历每一…

【LeetCode OJ】Longest Palindromic Substring

题目链接:https://leetcode.com/problems/longest-palindromic-substring/ 题目:Given a string S, find the longest palindromic substring in S. You may assume that the maximum length of S is 1000, and there exists one unique longest palindromic substring. 解题思路:p…

LeetCode(3)题解: Longest Palindromic Substring

https://leetcode.com/problems/longest-palindromic-substring/ 题目: Given a string S, find the longest palindromic substring in S. You may assume that the maximum length of S is 1000, and there exists one unique longest palindromic substring. 思路: 我的思路是遍…

【LeetCode】5. Longest Palindromic Substring 最长回文子串

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:最长回文子串,题解,leetcode, 力扣,python, C++, java 目录题目描述题目大意解题方法暴力遍历动态规划日期题目地址:https://leetcode.com/problems/longest-palindromic-substring/description/ 题目描述 Given a string s, find t…

【LeetCode】5. Longest Palindromic Substring 最大回文子串

题目: Given a string S, find the longest palindromic substring in S. You may assume that the maximum length of S is 1000, and there exists one unique longest palindromic substring. 思路:用Manacher算法得到最大回文子串的长度,得到带#的最大回文子串,用split剔除#后转化成String形式输出即可. public…

【leetcode】5. Longest Palindromic Substring

题目描述: Given a string S, find the longest palindromic substring in S. You may assume that the maximum length of S is 1000, and there exists one unique longest palindromic substring. 解题分析: 之前百度实习生面试也被问到这个问题.这个题比较简单.就是在分别考虑对称字符字串为奇数和偶数的情况,在不超过字符串范围的情况下向…