public int[] makeMiddle(int[] nums) {
  int[] a = new int[2];
  int mid = nums.length / 2;
  a[0] = nums[mid-1];
  a[1] = nums[mid];
  return a;
}

public int[] makeMiddle(int[] nums) {
  int mid = nums.length / 2;
  int[] a = { nums[mid-1], nums[mid] };
  return a;
}