LeetCode 5. Longest Palindromic Substring & 回文字符串

【LeetCode 5. Longest Palindromic Substring & 回文字符串】的更多相关文章

LeetCode 5. Longest Palindromic Substring & 回文字符串

Longest Palindromic Substring 回文这种简单的问题,在C里面印象很深啊.希望能一次过. 写的时候才想到有两种情况: 454(奇数位) 4554(偶数位) 第1次提交 class Solution: def longestPalindrome(self, s): """ :type s: str :rtype: str """ print(s) maxPadStr='' # traverse each char l=le…

Leetcode 5. Longest Palindromic Substring(最长回文子串， Manacher算法)

Leetcode 5. Longest Palindromic Substring(最长回文子串, Manacher算法) Given a string s, find the longest palindromic substring in s. You may assume that the maximum length of s is 1000. Example 1: Input: "babad" Output: "bab" Note: "aba&q…

LeetCode(4) || Longest Palindromic Substring 与 Manacher 线性算法

LeetCode(4) || Longest Palindromic Substring 与 Manacher 线性算法题记本文是LeetCode题库的第五题,没想到做这些题的速度会这么慢,工作之余全部耗在这上面了,只怪自己基础差.本文主要介绍使用Manacher线性算法来求解字符串的最长回文子字符串. 题目 Given a string S, find the longest palindromic substring in S. You may assume that the maxim…

[LeetCode] 125. Valid Palindrome 验证回文字符串

Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. For example,"A man, a plan, a canal: Panama" is a palindrome."race a car" is not a palindrome. Note:Have you consider that th…

leetcode：Longest Palindromic Substring（求最大的回文字符串）

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…

求最长回文子串 - leetcode 5. Longest Palindromic Substring

写在前面:忍不住吐槽几句今天上海的天气,次奥,鞋子里都能养鱼了...裤子也全湿了,衣服也全湿了,关键是这天气还打空调,只能瑟瑟发抖祈祷不要感冒了.... 前后切了一百零几道leetcode的题(solution同步在github),主要是拣难度系数定为easy的水题做...好吧,这是第一道算法题.不知哪位大神说的,所有的语言都会过时,只有数据结构和算法才是永恒. 今天要重点讲的是优雅的Manacher算法,先来看这道题Longest Palindromic Substring,题目很简单,给你一…

[LeetCode] 5. Longest Palindromic Substring 最长回文子串

Given a string s, find the longest palindromic substring in s. You may assume that the maximum length of s is 1000. Example 1: Input: "babad" Output: "bab" Note: "aba" is also a valid answer. Example 2: Input: "cbbd"…

最长回文子串-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. 即给定一个字符串,求它的最长回文子串的长度(或者最长回文子串). 解法一对于一个问题,一定可以找到一个傻的可爱的暴力解法,本题的暴力解法即…

leetcode 5 :Longest Palindromic Substring 找出最长回文子串

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. 翻译: 找出字符串s中最长的回文子串,字符串s的最长是1000,假设存在唯一的最长回文子串法一:直接暴力破解 O(N3)的时间复杂度,运行超…

[leetcode]5. Longest Palindromic Substring最长回文子串

Given a string s, find the longest palindromic substring in s. You may assume that the maximum length of s is 1000. Example 1: Input: "babad" Output: "bab" Note: "aba" is also a valid answer. Example 2: Input: "cbbd"…

《LeetBook》leetcode题解(5):Longest Palindromic [M]——回文串判断

我现在在做一个叫<leetbook>的免费开源书项目,力求提供最易懂的中文思路,目前把解题思路都同步更新到gitbook上了,需要的同学可以去看看书的地址:https://hk029.gitbooks.io/leetbook/ 005.Longest Palindromic [M] Longest Palindromic M 题目思路题目 Given a string S, find the longest palindromic substring in S. You may assu…

[LeetCode][Python]Longest Palindromic Substring

# -*- coding: utf8 -*-'''__author__ = 'dabay.wang@gmail.com'https://oj.leetcode.com/problems/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 e…

【LeetCode】Longest Palindromic Substring 解题报告

DP.KMP什么的都太高大上了.自己想了个朴素的遍历方法. [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](应该算是O(n)吧) 从中间向两端搜索.分别找到以每一个字母为中心的最…

LeetCode 5 Longest Palindromic Substring（最长子序列）

题目来源:https://leetcode.com/problems/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. 动态规划,类似于l…

Java [leetcode 5] Longest Palindromic Substring

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…

蜗牛慢慢爬 LeetCode 5.Longest Palindromic Substring [Difficulty: Medium]

题目 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. Example: Input: "cbbd"…

[LeetCode] 5. 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. 求字符串中的最大回文子串(从左往右和从右往左读一样的子串). Example: Input: "babad" Output: "bab" Note: "aba" is also a valid answer. Exam…

LN : leetcode 5 Longest Palindromic Substring

lc 5 Longest Palindromic Substring 5 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: "ab…

【JAVA、C++】LeetCode 005 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. 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…

【leetcode】Longest Palindromic Substring (middle) 经典

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. 动态规划解法 O(n2) 超时 string longestPalindrome(string s) { if(s.empty()) return s…

leetcode解题—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:参考网上大神做法,解题如下: class Solution: def get_palindromic(self, s, k, l): s…

【Leetcode】Longest Palindromic Substring

问题:https://leetcode.com/problems/longest-palindromic-substring/ 给定一个字符串 S,求出 S 的最长回文子串思路: 1. 回文:一个字符串从前和从后读一致.S = "ABBA" 从前读:ABBA,从后读:ABBA 2. 最简单的做法:列出所有的子串,并判断是否是回文,从中找出最长的. 表格列出了所有的子串,第 i 行是以 S 的第 i 个字符开始的子串.S = "ABBA" 1 A AB A…

[LeetCode] Valid Palindrome II 验证回文字符串之二

Given a non-empty string s, you may delete at most one character. Judge whether you can make it a palindrome. Example 1: Input: "aba" Output: True Example 2: Input: "abca" Output: True Explanation: You could delete the character 'c'. N…

LeetCode——5.Longest Palindromic Substring

一.题目链接:https://leetcode.com/problems/longest-palindromic-substring/ 二.题目大意: 给定一个字符串,找出它最长的回文子串.例如,字符串“caabb”,它的最长回文子串为“aabb”. 三.题解: 找最长回文子串应该说是比较经典的题目,这个题目我目前有三种思路: 方法1:暴力解决,找出所有的子串,并判断子串是不是回文,然后记录最长的回文子串.代码如下: class Solution { public: string longest…

ZOJ 3661 Palindromic Substring(回文树)

Palindromic Substring Time Limit: 10 Seconds Memory Limit: 65536 KB In the kingdom of string, people like palindromic strings very much. They like only palindromic strings and dislike all other strings. There is a unified formula to calculate th…

LeetCode题解——Longest Palindromic Substring

题目: 给定一个字符串S,返回S中最长的回文子串.S最长为1000,且最长回文子串是唯一. 解法: ①遍历,对于每个字符,计算以它为中心的回文子串长度(长度为奇数),同时计算以它和右边相邻字符为中心的回文子串长度(长度为偶数).时间为O(N2). ②另外,有一个很奇妙的算法,称为Manacher算法,参考 http://www.cnblogs.com/daoluanxiaozi/p/longest-palindromic-substring.html ,时间为O(N). 代码: ①直接扩展: c…

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