컬렉션 & 제네릭 사용하기

using System.Collections;

string[] colors = {"red", "blue", "green"};

// Array
Array.Sort(colors);
Array.Reverse(colors);

// Stack
Stack stack = new Stack();
stack.Push(100);
stackPop();

// Queue
Queue queue = new Queue();
queue.Enqueue(100);
queue.Dequeue();

// ArrayList
ArrayList list = new ArrayList();
list.Add(10);
list.Add(20);
list.RemoveAt(1);
list.Insert(0, 50);

// HashTable
Hashtable hashtable = new Hashtable();
hashtable[0] = "ABC";
tashtable["NickName"] = "RedPlus";

using System.Collections.Generic;

// Stack
Stack<int> stack = new Stack<int>();
stack.Push(100);

// List
List<int> numbers = new List<int>();
numbers.Add(10);
numbers.Add(20);

// Dictionary
Dictionary<int, string> todos = new Dictionary<int, string>();
todos.Add(1, "AAA");
todos.Add(2, "BBB");

foreach(var item in todos)
{
    Console.WriteLine($"{Item.Key} - {item.Value}");
}