private static void Main()
{
var s = new MyStack();
s.Push(1);
s.Push(2);
var top = s.Pop();
top = s.Top();
var sEmpty = s.Empty();
var q = new MyQueue();
q.Push(1);
q.Push(2);
var peek = q.Peek();
peek = q.Pop();
var empty = q.Empty();
}