public static void ReverseRotate(string[] a, int n, int r)
{
Array.Reverse(a, 0, n - r);
Reverse.swap(a, n - r, n);
//Array.Reverse(a, n-r, r);
Array.Reverse(a, 0, n);
}
static void Main(string[] args)
{
int[] a = { 1, 2, 3, 4, 5, 6 };
int n = a.Length;
int k = 2;
string [] b = { "a", "b", "c", "d", "e", "f", "g" };
int num = b.Length;
int r = 2;
// rotatearray(a, n, k); // GCD algorithm to rotate
// rotatearrayBYK(a, n, k);
//displayarray(a, n);
// ReverseRotate(b, num, r); // Reverseal algorithm to rotate
Reverse.Test();
}