static void Main(string[] args)
        {
            //create and fill a single dimensional array with integers
            int[] a = new int[3];
            a[0] = 1;
            a[1] = 2;
            a[2] = 3;

            //create and fill a single dimensional array with integers
            int[] b = new int[3];
            b[0] = 7;
            b[1] = 3;
            b[2] = 2;

            CommonEnd run = new CommonEnd();
            run.commonEnd(a, b);
            Console.ReadLine();
        }
        static void Main(string[] args)
        {
            //create and fill a single dimensional array with integers
            int[] a = new int[3];
            a[0] = 1;
            a[1] = 2;
            a[2] = 3;

            //create and fill a single dimensional array with integers
            int[] b = new int[3];
            b[0] = 7;
            b[1] = 3;
            b[2] = 2;

            CommonEnd run = new CommonEnd();

            run.commonEnd(a, b);
            Console.ReadLine();
        }