Constructor Detail

• FifoQueueNoDuplicates

  public FifoQueueNoDuplicates()

Method Detail

• getPushedNodes

  public Iterator<T> getPushedNodes()

  Return an Iterator over the set of all the nodes that were pushed into the queue.

  Returns:

  an Iterator over the set of pushed nodes.

• push

  public void push(T element)

  Insert an Object at the tail end of the queue if it was never pushed into the queue.

  This method determines whether an element was ever in the queue using the element's equals() method. If the element's class does not implement equals(), the default implementation assumes they are equal if it is the same object.

  Overrides:

  push in class FifoQueue<T>

  Parameters:

  element - is the Object to be added to the queue if not ever previously queued.

• push

  public void push(Iterator<? extends T> elements)
            throws IllegalArgumentException

  Insert all of the elements in the specified Iterator at the tail end of the queue if never previously pushed into the queue.

  This method determines whether an element was ever pushed into the queue using the element's equals() method. If the element's class does not implement equals(), the default implementation assumes that two elements are equal if they are the same object.

  Overrides:

  push in class FifoQueue<T>

  Parameters:

  elements - an Iterator of Objects to be added to the queue if never already queued.

  Throws:

  IllegalArgumentException - if elements == null

• everContained

  public boolean everContained(T element)

  Indicate whether the specified element was ever in the queue.

  Parameters:

  element - determine whether this object is in the queue.

  Returns:

  true if element is in the queue. Otherwise false.

• queuedSet

  public Set<T> queuedSet()

  Return the set of objects that have been queued.