题解 | #字符串反转#

数据结构用字符串，算法很简单，逆序遍历输出完事了

#include <iostream>
#include <string>
using namespace std;

int main(){
    string str, res;
    int len;
    while(cin >> str){
        len = str.size();
        for(int i = len-1; i >=0; i--){
            res.push_back(str[i]);
        }
        cout << res << endl;
    }
    return 0;
}