ReverseArray -TizzyT

        public static T[] Reverse<T>(this T[] arr)
        {
            for (int i = 0, j = arr.Length - 1; i < arr.Length / 2; i++, j--)
            {
                T ph = arr[i];
                arr[i] = arr[j];
                arr[j] = ph;
            }
            return arr;
        }