it.unimi.dsi.fastutil.ints

Interface IntPriorityQueue

All Superinterfaces:

PriorityQueue<Integer>

All Known Implementing Classes:

AbstractIntPriorityQueue, IntArrayFIFOQueue, IntArrayPriorityQueue, IntHeapPriorityQueue, IntPriorityQueues.SynchronizedPriorityQueue

public interface IntPriorityQueue
extends PriorityQueue<Integer>

A type-specific PriorityQueue; provides some additional methods that use polymorphism to avoid (un)boxing.

Additionally, this interface strengthens comparator().

Method Summary

Modifier and Type	Method and Description
IntComparator	comparator() Returns the comparator associated with this sorted set, or null if it uses its elements' natural ordering.
int	dequeueInt() Dequeues the first element from the queue.
void	enqueue(int x) Enqueues a new element.
int	firstInt() Returns the first element of the queue.
int	lastInt() Returns the last element of the queue, that is, the element the would be dequeued last (optional operation).

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

changed, clear, dequeue, enqueue, first, isEmpty, last, size

Method Detail

enqueue

void enqueue(int x)

Enqueues a new element.

Parameters:

x - the element to enqueue.

dequeueInt

int dequeueInt()

Dequeues the first element from the queue.

Returns:

the dequeued element.

Throws:

NoSuchElementException - if the queue is empty.

firstInt

int firstInt()

Returns the first element of the queue.

Returns:

the first element.

Throws:

NoSuchElementException - if the queue is empty.

lastInt

int lastInt()

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

Returns:

the last element.

Throws:

NoSuchElementException - if the queue is empty.

comparator

IntComparator comparator()

Returns the comparator associated with this sorted set, or null if it uses its elements' natural ordering.

Note that this specification strengthens the one given in PriorityQueue.comparator().

Specified by:

comparator in interface PriorityQueue<Integer>

Returns:

the comparator associated with this sorted set, or null if it uses its elements' natural ordering.

See Also:

PriorityQueue.comparator()