using System;

public class Program

{

    static void printIntersection(int[] arr1, 

                                  int[] arr2) 

    { 

        int m = arr1.Length; 

        int n = arr2.Length; 

        int i = 0, j = 0; 

        while (i < m && j < n) { 

            if (arr1[i] < arr2[j]) 

                i++; 

            else if (arr2[j] < arr1[i]) 

                j++; 

            else { 

                Console.Write(arr2[j++] + " "); 

                i++; 

            } 

        } 

    }

    public static void Main()

    {

        int[] arr1 = { 1, 3, 4, 7, 9,12,17 }; 

        int[] arr2 = { 2, 3, 5, 9,17 }; 

        printIntersection(arr1, arr2); 

    }

​

}