牛客题霸-反转字符串题解

原题链接：https://www.nowcoder.com/practice/c3a6afee325e472386a1c4eb1ef987f3?tpId=188&rp=1&ru=%2Fta%2Fjob-code-high-week&qru=%2Fta%2Fjob-code-high-week%2Fquestion-ranking

class Solution {
public:
    /**
     * 反转字符串
     * @param str string字符串 
     * @return string字符串
     */
    string solve(string str) {
        // write code here
         string s="";
        for(int i=str.size()-1;i>=0;i--){
            s+=str[i];
        }
        return s;
    }
};