啊哈添柴——挑戰
1763. 字符串替換(strcpy)
import java.util.Scanner;
/**
* @author yinglongwu
*/
//1763. 字符串替換(strcpy)
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
String s1 = scanner.next();
String s2 = scanner.next();
System.out.println(s2+" "+s1);
}
}