import java.util.Arrays; import java.util.Scanner; public class Main { public static void main(String[] args) { int[] arr = new int[6]; Scanner scanner = new Scanner(System.in); for (int i = 0; i < arr.length; i++) { arr[i] = scanner.nextInt(); } System.out.println(Arrays.toString(arr)); //write your code here...... int left=0; int right=5; while(left<right)//交换 { arr[left]=arr[left]+arr[right]-(arr[right--]=arr[left++]); } System.out.println(Arrays.toString(arr)); } }