数组交换

请把int[] arr = {1,2,3,4,5}这个数组中索引值为0和最大索引的值进行交换，请编写代码

public class Test02 {
    public static void exange(int[] a) {
        int max = a.length - 1;
        int temp = a[max];
        a[max] = a[0];
        a[0] = temp;
    }

    public static void main(String[] args) {
        int[] arr = new int[]{1, 2, 3, 4, 5};
        System.out.println("交换前的数组：");
        for (int i = 0; i < arr.length; i++) {
            System.out.print(arr[i] + " ");
        }
        exange(arr);
        System.out.print('\n');
        System.out.println("交换后的数组：");
        for (int i = 0; i < arr.length; i++) {
            System.out.print(arr[i] + " ");
        }
    }
}