it.unimi.dsi.fastutil
Class AbstractIndirectPriorityQueue<K>

java.lang.Object
  it.unimi.dsi.fastutil.AbstractIndirectPriorityQueue<K>

All Implemented Interfaces:

IndirectPriorityQueue<K>

Direct Known Subclasses:

AbstractIndirectDoublePriorityQueue, ByteArrayIndirectPriorityQueue, ByteHeapSemiIndirectPriorityQueue, CharArrayIndirectPriorityQueue, CharHeapSemiIndirectPriorityQueue, DoubleArrayIndirectPriorityQueue, DoubleHeapSemiIndirectPriorityQueue, FloatArrayIndirectPriorityQueue, FloatHeapSemiIndirectPriorityQueue, IndirectPriorityQueues.EmptyIndirectPriorityQueue, IntArrayIndirectPriorityQueue, IntHeapSemiIndirectPriorityQueue, LongArrayIndirectPriorityQueue, LongHeapSemiIndirectPriorityQueue, ObjectArrayIndirectPriorityQueue, ObjectHeapSemiIndirectPriorityQueue, ShortArrayIndirectPriorityQueue, ShortHeapSemiIndirectPriorityQueue

public abstract class AbstractIndirectPriorityQueue<K>
extends Object
implements IndirectPriorityQueue<K>

An abstract class providing basic methods for implementing the IndirectPriorityQueue interface.

This class defines changed(int), allChanged(), remove(int) and last() as throwing an UnsupportedOperationException.

Constructor Summary

AbstractIndirectPriorityQueue()

Method Summary

void	allChanged() Notifies the queue that the all elements have changed (optional operation).
void	changed() Notifies the queue that the first element has changed (optional operation).
void	changed(int index) Notifies the queue that the specified element has changed (optional operation).
boolean	isEmpty() Checks whether the queue is empty.
int	last() Returns the last element of the queue, that is, the element the would be dequeued last (optional operation).
void	remove(int index) Removes the specified element from the queue (optional operation).

Methods inherited from class java.lang.Object

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

Methods inherited from interface it.unimi.dsi.fastutil.IndirectPriorityQueue

clear, comparator, dequeue, enqueue, first, front, size

Constructor Detail

AbstractIndirectPriorityQueue

public AbstractIndirectPriorityQueue()

Method Detail

last

public int last()

Description copied from interface: IndirectPriorityQueue

Returns the last element of the queue, that is, the element the would be dequeued last (optional operation).

Specified by:

last in interface IndirectPriorityQueue<K>

Returns:

the last element.

changed

public void changed()

Description copied from interface: IndirectPriorityQueue

Notifies the queue that the first element has changed (optional operation).

Specified by:

changed in interface IndirectPriorityQueue<K>

changed

public void changed(int index)

Description copied from interface: IndirectPriorityQueue

Notifies the queue that the specified element has changed (optional operation).

Note that the specified element must belong to the queue.

Specified by:

changed in interface IndirectPriorityQueue<K>

Parameters:

index - the element that has changed.

allChanged

public void allChanged()

Description copied from interface: IndirectPriorityQueue

Notifies the queue that the all elements have changed (optional operation).

Specified by:

allChanged in interface IndirectPriorityQueue<K>

remove

public void remove(int index)

Description copied from interface: IndirectPriorityQueue

Removes the specified element from the queue (optional operation).

Note that the specified element must belong to the queue.

Specified by:

remove in interface IndirectPriorityQueue<K>

Parameters:

index - the element to be removed.

isEmpty

public boolean isEmpty()

Description copied from interface: IndirectPriorityQueue

Checks whether the queue is empty.

Specified by:

isEmpty in interface IndirectPriorityQueue<K>

Returns:

true if the queue is empty.