没啥好说的，求回文串，处理一下string就ok
class Solution {public: bool isPalindrome(string s) { if(s.length() == 0) return true;; string ss = ""; for(int i = 0; i < s.length(); ++ i){ if(s[i] >= '0' && s[i] <= '9') ss += s[i]; else if(s[i] >= 'a' && s[i] <= 'z') ss += s[i]; else if(s[i] >= 'A' && s[i] <= 'Z'){ char t = s[i] + 32; ss += t; } } int l = ss.length(); for(int i = 0; i <= ss.length() / 2; ++ i) if(ss[i] != ss[l - i - 1]) return false; return true; }};新闻热点
疑难解答
