APCSA/U6/L4/U6_L4_Activity_Two.java

public class U6_L4_Activity_Two {

    public static void swap(int[] arr, int i, int j) {
        int temp = arr[i];
        arr[i] = arr[j];
        arr[j] = temp;
    }

    public static void allReverseSwap(int[] arr) {
        for (int i = 0; i < arr.length / 2; i++) {
            swap(arr, i, arr.length - 1 - i);
        }
    }
}