回文检测,参考http://blog.csdn.net/feliciafay/article/details/16984031 使用时间复杂度和空间复杂度相对较低的动态规划法来检测,具体的做法 图一 偶数个回文字符情况 图二 奇数个回文字符情况 核心就是如果一个子串是回文,如果分别向回文左右侧扩展一个字符相同,那么回文就向外扩展一位. 实现的代码如下 ][] = {false}; ; ; int n = s.size(); ; iLoop < n; ++iLoop) { table[iLoop]…

Given a string which consists of lowercase or uppercase letters, find the length of the longest palindromes that can be built with those letters. This is case sensitive, for example "Aa" is not considered a palindrome here. Note:Assume the lengt…

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…

链接:https://ac.nowcoder.com/acm/contest/908/G 题意: A palindrome is a symmetrical string, that is, a string read identically from left to right as well as from right to left. For example, ”a”.”aba”.“abba” are palindrome and “abc”.”aabb” are not. Let’s d…

/* * 5.Longest Palindrome substring * 2016-4-9 by Mingyang 自然而然的想到用dp来做 * 刚开始自己做的时候分的条件太细,两个index相等,相差小于3,还有其他 * 但这里这个if写的很好,一个代表了所有为true的情况 * 根本不用管为false的情况,因为自然而然为false * */ public String longestPalindrome(String s) { String res = " "; if (s =…

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…

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. 面DP题的考官都是神经病. .(吐槽) 貌似挺easy出回文的题,那么今天细致分析下DP的做法!! 以解我被DP问题虐成渣渣的心碎感觉.如有错误请指出…

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"…

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…

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…