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
#include <iostream> using namespace std; int lps(string seq, int i, int j) { int len1, len2; if (i == j)//当i=j时,则此时扫描到的项是一定可以放入该回文子序列中并且对回文子序列的长度贡献为1 ; if (i > j)//当i>j时,即扫描到的左边的数在右边已经扫描过了,所以该项及往后的所有项都是已经扫描过的项,对回文子序列的长度贡献为0 ; if (seq[i] == seq
题目链接: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): 15922 Accepted Submission(s): 5830 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,
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