题解 | #数列求和#

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......
    for(int i=0; i < arr.length/2; i++){//数组头尾互换数字，所以到中间就行
        int a=arr.length-i-1;//数组尾巴的地址
        int j=arr[i];//将数组前面的数组暂时存在变量J中
        arr[i]=arr[a];//开始互换
        arr[a]=j;
    }

    System.out.println(Arrays.toString(arr));
}

}