using System;

using System.Collections;

​

public class Program

{

    public static void Main()

    {

        ArrayList LA = new ArrayList() { 1, 3, 5, 7, 8 };

        Console.WriteLine("The Original array elements are:" + string.Join(",", LA.ToArray()));

​

        int item = 10, k = 3;

        LA.Insert(k, item);

        Console.WriteLine("The array elements after insertion:" + string.Join(",", LA.ToArray()));

​

    }

}