echoコマンド(もどき)

import System;
import System.Collections;
var arguments: ArrayList = new ArrayList(Environment.GetCommandLineArgs());
arguments.RemoveAt(0);
var nFlag = arguments.Count > 0 && arguments[0] === "-n";
if (nFlag)
    arguments.RemoveAt(0);
Console.Write(String.Join(" ", String[](arguments.ToArray())));
if (! nFlag)
    Console.WriteLine();