using System;
using System.Linq;

class Program
{
    static void Main()
    {
        int[] array1 = { 1, 2, 3, 4, 5 };
        int[] array2 = { 4, 5, 6, 7, 8 };
        int[] intersection = array1.Intersect(array2).ToArray();
        Console.WriteLine("Intersection: " + string.Join(", ", intersection));
    }
}