Queue 선입선출 using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Collections; namespace Study09 { class App { //생성자 public App() { Console.WriteLine("App"); Queue queue = new Queue(); queue.Enqueue(1); queue.Enqueue("홍길동"); queue.Enqueue(true); queue.Enqueue(null); queue.Enqueue(new Hero()); queue.Enqueue(new Queue()); qu..