using System;
using System.Linq;

public class Test
{
	public static void Main()
	{
		var a = new [] { "1", "2", "3" };
		var b = new [] { "1", "2" };
		var c = new [] { "2", "b" };
		
		Console.WriteLine(a.SequenceEqual(b)); // false
		Console.WriteLine(a.SequenceEqual(c)); // false
		Console.WriteLine(c.SequenceEqual(b)); // false
		
		var d = new [] { "a", "B" };
		var e = new [] { "A", "b" };

		Console.WriteLine(d.SequenceEqual(e, StringComparer.OrdinalIgnoreCase)); // true
	}
}