Stack 사용 연습

using System;
using System.Collections;
using System.Collections.Generic;

namespace Study09
{
    class App
    {
        public App()
        {
            //컬렉션 생성 
            Stack<Weapon> weapons = new Stack<Weapon>();

            Weapon weapon0 = new Weapon("장검");

            //Add
            weapons.Push(weapon0);
            weapons.Push(new Weapon("단검"));

            Weapon peek = weapons.Peek();   //제거 안하고 젤 위에꺼 확인 
            Console.WriteLine(peek.Name);   //단검 
            Console.WriteLine(weapons.Count);   //2

            //Contains 
            bool contains = weapons.Contains(weapon0);
            Console.WriteLine(contains);

            //단일 요소값 가져오기 
            Weapon myWeapon = weapons.Pop();
            Console.WriteLine(myWeapon.Name);   //단검 
            Console.WriteLine(weapons.Count);   //1

            //Remove (x)

            //Count 
            Console.WriteLine(weapons.Count);

            //for (x)

            weapons.Push(null); //null가능 

            //foreach 
            foreach (Weapon weapon in weapons) {
                if (weapon != null)
                    Console.WriteLine(weapon.Name);
            }

            //while
            while (weapons.Count > 0) {
                Weapon weapon = weapons.Pop();
                if(weapon != null)
                    Console.WriteLine(weapon.Name);
            }


        }
    }
}