Rotate An Array Left + Right

namespace Algorithms
{
    class Program
    {
        // Create an algorithm that rotates the contents of an
        // array to the left by one space.  For example, if given
        // an array with the numbers Input: {1, 2, 3, 4, 5, 6}, 
        // the returned array should be Output: {2, 3, 4, 5, 6, 1}.
        // The rotation should be done in place.  A new array
        // should not be created.

        // Attempt to rotate contents to the right as well in a 
        // separate algorithm below it.
        static void RotateArrayLeft(int[] input)
        {
            int temp = input[0];
            for(int i = 0; i < input.Length - 1; i++)
            {
                input[i] = input[i + 1];
            }
            input[input.Length - 1] = temp;
        }
        static void RotateArrayRight(int[] input)
        {
            int temp = input[input.Length - 1];
            for(int i = input.Length - 1; i > 0; i--)
            {
                input[i] = input[i - 1];
            }
            input[0] = temp;
        }
        static void Main(string[] args)
        {
            int[] arr = {1, 2, 3, 4, 5, 6};

            RotateArrayLeft(arr);
            Array.ForEach(arr, Console.WriteLine);
            RotateArrayRight(arr);
            Array.ForEach(arr, Console.WriteLine);
        }
    }
}