public class Test12 {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner input = new Scanner(System.in);
System.out.println("请输入一个字符串:");
String str = input.next();
for (int i = str.length() - 1; i >= 0; i--) {
char ch = str.charAt(i);
System.out.print(ch);
}
}
}