原题链接：https://leetcode.com/problems/palindrome-number/description/1.题目要求：判断一个int类型整数是否是回文，空间复杂度O(1)2.注意：负数不是回文！！因为前面有负号！注意整数溢出问题。3.思路：依然采用取余取整的方法1packagecom.huiA...

原题链接：https://leetcode.com/problems/longest-palindromic-substring/description/1.题目要求：找出字符串中的最大回文子串 2.注意：要考虑回文子串中的字符个数是奇数还是偶数！！！例如，“aabaa”是一个奇数个字符的回文字符串，他的中心...

https://www.cnblogs.com/grandyang/p/4464476.html用动态规划做classSolution{public:stringlongestPalindrome(strings){if(s.empty())return"";intdp[s.size()][s.size()]={0};...

https://www.cnblogs.com/grandyang/p/7404777.html博客中写的<=2,实际上<=1也是可以的相当于判断一个大指针内所有子字符串是否可能为回文classSolution{public:intcountSubstrings(strings){intlength=s.s...

Anumberthatwillbethesamewhenitiswrittenforwardsorbackwardsisknownasa PalindromicNumber.Forexample,1234321isapalindromicnumber.Allsingledigitnumbersarepalin...

Anumberthatwillbethesamewhenitiswrittenforwardsorbackwardsisknownasa PalindromicNumber.Forexample,1234321isapalindromicnumber.Allsingledigitnumbersarepalin...

 classSolution(object):defget_f_l(self,s_length,s,list_all,last_d):max_l=0first_d=0last_d=0foriinrange(len(list_all)):if((i+1)==len(list_all)):breakforjinr...

AnumberthatwillbethesamewhenitiswrittenforwardsorbackwardsisknownasaPalindromicNumber.Forexample,1234321isapalindromicnumber.Allsingledigitnumbersarepalindromic...

AnumberthatwillbethesamewhenitiswrittenforwardsorbackwardsisknownasaPalindromicNumber.Forexample,1234321isapalindromicnumber.Allsingledigitnumbersarepalindromic...

总时间限制: 1000ms 内存限制: 65536kB描述AsequenceofpositiveintegersisPalindromicifitreadsthesameforwardandbackward.Forexample:231115137371151123112347710774...