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(); }