/// <summary>
/// Enqueues <paramref name="x"/> into hashqueue.
/// </summary>
public void Enqueue(T x)
{
x.ThrowIfArgumentNull(nameof(x));
if (!map.TryGetValue(x, out Deque <Node <T> > nodeq))
{
nodeq = new Deque <Node <T> >();
map[x] = nodeq;
}
nodeq.Enqueue(dq.Enqueue(x));
}
public static IDeque ConcatenateIDeque(IDeque a, IDeque b)
{
// create new deque as a copy of a
IDeque newDeque = (IDeque)Activator.CreateInstance(a.GetType(), a);
// then append b
foreach (object entry in b)
{
newDeque.Enqueue(entry);
}
return(newDeque);
}
/// <inheritdoc />
public void Enqueue(T item)
{
_deque.Enqueue(item);
}