[USACO15OPEN]回文的路径Palindromic Paths 题目描述 Farmer John's farm is in the shape of an N \times NN×N grid of fields (1 \le N \le 5001≤N≤500), each labeled with a letter in the alphabet. For example: ABCD BXZX CDXB WCBA Each day, Bessie the cow walks from
[译+改]最长回文子串(Longest Palindromic Substring) Part II 原文链接在http://leetcode.com/2011/11/longest-palindromic-substring-part-ii.html 原文作者有些地方逻辑上有点小问题,我做了纠正.关于解释时间复杂度上,原作者就只有两句话,我无法理解,特意在此加强了,便于理解. 问题:给定字符串S,求S中的最长回文子串. 在上一篇,我们给出了4种算法,其中包括一个O(N2)时间O(1)空间的算法
CA loves strings, especially loves the palindrome strings. One day he gets a string, he wants to know how many palindromic substrings in the substring S[l,r] . Attantion, each same palindromic substring can only be counted once. InputFirst line conta
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 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: