Creating a method arrayModifier(int[] a) which takes an integer array of length n, where n > 5.  The method returns an integer array of length 10 where the first 1/2 of the array contains elements from the start of the input array and the second 1/2 of the array contains elements from the end of the input array.
I'm not 100% sure how to start any help would be great !

My test case:

    int[] a = {4, 5, 6, 7, 8, 9};
    System.out.println(Arrays.toString(arrayModifier(a)))

output:

    [4, 5, 6, 7, 8, 5, 6, 7, 8, 9]

Another test case:

    int[] a = {23, 43, 23, 56, 78, 95, 67, 24, 15, 28, 37, 48, 66};
    System.out.println(Arrays.toString(arrayModifier(a)))

output:

    [23, 43, 23, 56, 78, 15, 28, 37, 48, 66]