［抄题］: Given a string s, find the longest palindromic subsequence's length in s. You may assume that the maximum length of s is 1000. Example 1:Input: "bbbab" Output: 4 One possible longest palindromic subsequence is "bbbb". [暴力解法]: 时间分…
Given a string s, find the longest palindromic subsequence's length in s. You may assume that the maximum length of s is 1000. Example 1:Input: "bbbab" Output: 4 One possible longest palindromic subsequence is "bbbb". Example 2:Input:…
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 解题思路 代码 刷题心得 日期 题目地址:https://leetcode.com/problems/longest-palindromic-subsequence/description/ 题目描述 Given a string s, find the longest palindromic subsequence's length in s. You ma…
给定一个字符串s,找到其中最长的回文子序列.可以假设s的最大长度为1000. 详见:https://leetcode.com/problems/longest-palindromic-subsequence/description/ C++: class Solution { public: int longestPalindromeSubseq(string s) { int n = s.size(); vector<vector<int>> dp(n, vector<in…
lc 516 Longest Palindromic Subsequence 516 Longest Palindromic Subsequence Given a string s, find the longest palindromic subsequence's length in s. You may assume that the maximum length of s is 1000. Example 1: Input: "bbbab" Output: 4 One pos…
Given a string s, find the longest palindromic subsequence's length in s. You may assume that the maximum length of s is 1000. Example 1:Input: "bbbab" Output: 4 One possible longest palindromic subsequence is "bbbb". Example 2:Input:…
Given a string s, find the longest palindromic subsequence's length in s. You may assume that the maximum length of s is 1000. Example 1:Input: "bbbab" Output: 4 One possible longest palindromic subsequence is "bbbb". Example 2:Input:…
Given a string s, find the longest palindromic subsequence's length in s. You may assume that the maximum length of s is 1000. Example 1:Input: "bbbab" Output: 4 One possible longest palindromic subsequence is "bbbb". Example 2:Input:…
Given a string s, find the longest palindromic subsequence's length in s. You may assume that the maximum length of s is 1000.Example 1:Input:"bbbab"Output:4One possible longest palindromic subsequence is "bbbb".Example 2:Input:"c…
A sequence X_1, X_2, ..., X_n is fibonacci-like if: n >= 3 X_i + X_{i+1} = X_{i+2} for all i + 2 <= n Given a strictly increasing array A of positive integers forming a sequence, find the length of the longest fibonacci-like subsequence of A. If on…
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…
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. 这道题让我们求最长回文子串,首先说下什么是回文串,就是正读反读都一样的字符串,比如 "bob", "level", &q…
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"…
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. 方法一(暴力解法): 就上暴力加些剪枝. 枚举回文串的长度,从最长的开始,寻找是否有当前长度的回文串. 如果找到,直接弹出循环,没找到就减小回文串的长…
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 leng…
[转载请注明]http://www.cnblogs.com/igoslly/p/8726771.html 来看一下题目: 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"…
转自:http://blog.csdn.net/hopeztm/article/details/7932245 Given a string S, find the longest palindromic substring in S. 给出一个字符串S,找到一个最长的连续回文串. 例如串 babcbabcbaccba 最长回文是:abcbabcba 这个题目小弟给出3中解法,前两种的都是 O(n^2), 第三种思路是O(n). 思路1. 动态规划 这里动态规划的思路是 dp[i][j] 表示的…
给定一个字符串求出其中最长个公共回文串. 举列子: abab -->回文串长度为2 以前的算法诸如: 扩展kmp求法过于麻烦,看到有一篇博文(http://leetcode.com/2011/11/longest-palindromic-substring-part-ii.html),写了一个关于这样的算法,按耐不住自己内心的小激动,就去学了下,于是将自己学习的一点点的理解记录下来: 它的处理方法是: 对于这样一个字符串: abab: a b a b 我们对于每一个字符串的进行逐个…
题目大意:给定一个长度为 N 的字符串 S,求 S 的最长双回文子串的长度,双回文子串定义为是 S 的一个子串,可以分成两个互不相交的回文子串. 题解:利用回文自动机 len 数组的性质,即:len 数组记录的是以每个点 i 字符结尾的,向左可以延伸的,最长回文串的长度.正向遍历一遍串 S,统计出对于每个点向左可以延伸的最长回文长度,再将字符串翻转,统计出向右可以延伸的长度.最后枚举间断点,统计答案即可. 注:增量法回文自动机的插入依赖于字符串下标递增的顺序,因此倒序插入必须将原串转置. 代码如…
http://acm.hdu.edu.cn/showproblem.php?pid=3068 最长回文 Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 12079 Accepted Submission(s): 4430 Problem Description 给出一个只由小写英文字符a,b,c...y,z组成的字符串S,求S中最长…
