LeetCode题解之Palindromic Substrings

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LeetCode题解之Palindromic Substrings

1.问题描述 2.问题分析对于每一个字符,以该字符为中心计算回文个数. 3.代码 int countSubstrings(string s) { ; ) ; ; i < s.size(); i++){ count += checkPalindromic(s, i,i); count += checkPalindromic(s, i, i+); } return count ; } int checkPalindromic( string s ,int i ,int j ){ ; &&…

【LeetCode】647. Palindromic Substrings 解题报告（Python）

[LeetCode]647. Palindromic Substrings 解题报告(Python) 标签: LeetCode 题目地址:https://leetcode.com/problems/palindromic-substrings/description/ 题目描述: Given a string, your task is to count how many palindromic substrings in this string. The substrings with dif…

【LeetCode】647. Palindromic Substrings 解题报告（Python & C++）

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录题目描述题目大意解题方法方法一:暴力循环方法二:固定起点向后找方法三:动态规划日期题目地址:https://leetcode.com/problems/palindromic-substrings/description/ 题目描述 Given a string, your task is to count how many palindromic substrin…

【Leetcode】647. Palindromic Substrings

Description Given a string, your task is to count how many palindromic substrings in this string. The substrings with different start indexes or end indexes are counted as different substrings even they consist of same characters. Example 1: Input: "…

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…