using System;
using System.Linq;
namespace ConsoleApplication_C_Sharp
{
class Program
{
static void Main(string[] args)
{
int[] arr1 = { 1, 2, 3, 4, 5, 6, 7 };
int[] arr2 = { 3, 4, 5, 7 };
var intersect = arr1.Intersect(arr2);
foreach (int n in intersect)
Console.WriteLine(n);
}
}
}
/*
run:
3
4
5
7
*/