Java为什么数组逆序这样写运行不了？

Question

建立新数组来存放旧数组的逆序的数据为什么不可行？如图，代码如下：

Answer 1

修改如下：

public class Main {
    public static void main(String[] args) {
        int [] arrs = {40,12,50,45,123,458,456,785,85,96,74,22,68};
        System.out.println("逆序前:");
        for (int arr : arrs)
            System.out.print(arr+" ");
        int temp;
        for (int i = 0; i < arrs.length / 2; i++)
        {
            temp = arrs[i];
            arrs[i] = arrs[arrs.length - 1 - i];
            arrs[arrs.length - 1 - i] = temp;
        }
        System.out.println("\n逆序后:");
        for (int arr : arrs)
            System.out.print(arr+" ");
    }
}