题解 | #反转字符串#

class Solution {
public:
    /**
     * 反转字符串
     * @param str string字符串 
     * @return string字符串
     */
    string solve(string str) {
        int len = str.length();
        int i;
        char temp;
        for (i = 0; i < len / 2; i++)
        {
            temp = str[i];
            str[i] = str[len-1 - i];
            str[len-1 - i] = temp;
        }
        return str;
    }
};