using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        //実は配列みたいに初期化できます

        var list = new List<int>{100,200,300,44};

        list.Remove(300);

        for(var i=0;i<list.Count;i++) Console.WriteLine(list[i]);

    }

}