题解 | #字符串反转#

/*
 * 解题思路: 
 *         1. StringBuffer().reverse()
 *         2. 逆序循环遍历
 */
import java.util.*;

public class Main {
    public static void main(String[] args) {
        String str = (new Scanner(System.in).nextLine());
        for (int i = str.length() - 1; i >= 0; i--) {
            System.out.print(str.charAt(i));
        }
    }
}