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. 题解: 第一种方法就是挨个检查,维护全局最长,时间复杂度为O(n3),会TLE. 代码如下: 1 public String longest…
Longest Palindromic Substring 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. time=255ms accepted 暴力遍历 public String lon…
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. 题目大意:给一个字符串S,存在唯一的最长的回文子串,求这个回文子串. 解题思路:首先这个题有O(n)的解,是在http://articles.leet…
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 exist one unique longest palindromic substring. 分析与解法 如果一段字符串是回文,那么以某个字符为中心的前缀和后缀都是相同的.例如,一段回文串"aba",以b为中心,它的前缀与后缀都是相同…
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. 解题思路一: 暴力枚举 共N^2量级个子串(从下标零开始),每次检查需一个for循环,等于是3重for循环,时间复杂度O(n^3) 解题思路二: 动态…
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. 动态规划 public class Solution { public String longestPalindrome(String s) { if…
问题描述: 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. 解题思路: 遍历方法,时间复杂度为O(n).首先从字符串的开头位置一直往后遍历,在每次遍历的过程中由该位置向两边扩散,直到找到最长的子回文…
题目中文:求最长回文子串 题目难度:Medium 题目内容: Given a string s, find the longest palindromic substring in s. You may assume that the maximum length of s is 1000. 翻译: 给定一个字符串s,找出s中最长的回文子串.你可以假设s的最大长度是1000. 什么叫回文子串? 就是字符串中,满足能正读反读都一样的子串,就是回文子串.如下所示 Input: "babad"…
Question: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.(给定一个字符串S,在S中找到最长的回文子字符串,假定最长的回文字符串长度是1000,并且在这个字符串中存在唯一的一个最长回文子字符串…
1. Longest Palindromic Substring Given a string s, find the longest palindromic substring in s. You may assume that the maximum length of s is 1000. Example: Input: "babad" Output: "bab" Note: "aba" is also a valid answer. Ex…
