力扣-125题 验证回文串(C++)- 字符串
作者:互联网
题目链接:https://leetcode-cn.com/problems/valid-palindrome/
题目如下:
class Solution {
public:
bool isPalindrome(string s) {
string str;
for(auto ch:s){
if(isalnum(ch)){
str+=tolower(ch);
}
}
int l=0,r=str.size()-1;
while(l<r){
if(str[l]!=str[r]) return false;
l++;
r--;
}
return true;
}
};
标签:ch,return,string,C++,力扣,125,str,题目,false 来源: https://blog.csdn.net/qq_40467670/article/details/121238824