functional queue

public class Queue<T> 
{
    private readonly List<T> _list = new List<T>();
    public void Enqueue(T item) { _list.Insert(0, item); }
    public T Dequeue() { var ret = Peek(); _list.RemoveAt(0); return ret; }
    public T Peek() { return _list[0]; }
}

var q = new Queue<int>();
q.Enqueue(1);
q.Enqueue(2);
q.Enqueue(3);
q.Dequeue();
q.Peek();