调用反向迭代器函数,rbegin,rend,判断回文串
class Solution { public: bool isPalindrome(string s) { string sgood; for (char ch: s) { if (isalnum(ch)) { sgood += tolower(ch); } } string sgood_rev(sgood.rbegin(), sgood.rend()); return sgood == sgood_rev; } };
原文:https://www.cnblogs.com/zhangdalao/p/14610038.html