public void Write()
{
Stack<int> stack = new Stack<int>();
stack.Push(10);
stack.Push(0);
stack.Push(100);
string test = "100 0 10 ";
Assert.IsTrue(stack.Write() == test);
}
static void Main(string[] args)
{
Stack<int> stack = new Stack<int>();
stack.Push(1);
stack.Push(2);
stack.Push(2);
//stack.Pop();
Console.WriteLine(stack.Write());
//Console.WriteLine(stack.Top());
Console.WriteLine("{0}, " ,stack.Size());
}