Class QueueByStacks

java.lang.Object
  QueueByStacks

All Implemented Interfaces:

Container, Queue

public class QueueByStacks
extends java.lang.Object
implements Queue

realizza una coda, usando sue pile.

Constructor Summary

QueueByStacks()

Method Summary

java.lang.Object	dequeue() estrae l'oggetto dalla coda
void	enqueue(java.lang.Object obj) inserisce un oggetto nella coda
java.lang.Object	front() ispeziona l'oggetto in fronte alla pila
boolean	isEmpty()
void	makeEmpty()
int	size()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

QueueByStacks

public QueueByStacks()

Method Detail

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Container

makeEmpty

public void makeEmpty()

Specified by:

makeEmpty in interface Container

size

public int size()

Specified by:

size in interface Container

enqueue

public void enqueue(java.lang.Object obj)

Description copied from interface: Queue

inserisce un oggetto nella coda

Specified by:

enqueue in interface Queue

Parameters:

obj - oggetto da inserire

front

public java.lang.Object front()
                       throws EmptyQueueException

Description copied from interface: Queue

ispeziona l'oggetto in fronte alla pila

Specified by:

front in interface Queue

Returns:

oggetto estratto

Throws:

EmptyQueueException

dequeue

public java.lang.Object dequeue()
                         throws EmptyQueueException

Description copied from interface: Queue

estrae l'oggetto dalla coda

Specified by:

dequeue in interface Queue

Returns:

oggetto estratto

Throws:

EmptyQueueException