using System.Collections.Generic;

// Create a list of strings.
var names = new List<string>();
names.Add("Adam");
names.Add("Alice");
names.Add("Kamal");
names.Add("Ben");

// Iterate through the list.
foreach (var name in names)
{
    Console.Write(name + " ");
}

// Output: Adam Alice Kamal Ben

			
	

			
	
			

		
	

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

List<int> l1 = new List<int>() { 1, 2, 3 };
List<int> l2 = new List<int>() { 3, 1, 2 }; 

Enumerable.SequenceEqual(
  l1.OrderBy(n => n),
  l2.OrderBy(n => n)
); 

			
	

			
	
			

		
	

			
					using System.Collections.Generic;

Dictionary<string, string> openWith = new Dictionary<string, string>();

// There are no duplicate keys, but some of the values are duplicates.
openWith.Add("txt", "notepad.exe");
openWith.Add("bmp", "paint.exe");
openWith.Add("dib", "paint.exe");
openWith.Add("rtf", "wordpad.exe");

Dictionary<string, object> user = new Dictionary<string, object>() {
  {"id", 1}, {"name", "john"}, {"age", 19}
};

Console.Write(user["name"]);

			
	

			
	
			

		
	

			
					using System.Collections.Generic;

Queue<string> numbers = new Queue<string>();
numbers.Enqueue("one");
numbers.Enqueue("two");
numbers.Enqueue("three");
numbers.Enqueue("four");
numbers.Enqueue("five");

foreach( string number in numbers )
{
  Console.WriteLine(number);
}

			
	

			
	
			

		
	

			
					using System.Collections.Generic;

Stack<string> numbers = new Stack<string>();
numbers.Push("one");
numbers.Push("two");
numbers.Push("three");
numbers.Push("four");
numbers.Push("five");

foreach( string number in numbers )
{
  Console.WriteLine(number);
}