it.unimi.dsi.fastutil.longs

Interface LongPriorityQueue

All Superinterfaces:

PriorityQueue<Long>

All Known Implementing Classes:

AbstractLongPriorityQueue, LongArrayFIFOQueue, LongArrayPriorityQueue, LongHeapPriorityQueue, LongPriorityQueues.SynchronizedPriorityQueue

public interface LongPriorityQueue
extends PriorityQueue<Long>

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

Additionally, this interface strengthens comparator().

Method Summary

Methods

Modifier and Type	Method and Description
LongComparator	comparator() Returns the comparator associated with this sorted set, or null if it uses its elements' natural ordering.
long	dequeueLong() Dequeues the first element from the queue.
void	enqueue(long x) Enqueues a new element.
long	firstLong() Returns the first element of the queue.
long	lastLong() 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(long x)

Enqueues a new element.

Parameters:

x - the element to enqueue.

dequeueLong

long dequeueLong()

Dequeues the first element from the queue.

Returns:

the dequeued element.

Throws:

NoSuchElementException - if the queue is empty.

firstLong

long firstLong()

Returns the first element of the queue.

Returns:

the first element.

Throws:

NoSuchElementException - if the queue is empty.

lastLong

long lastLong()

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

LongComparator 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<Long>

Returns:

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

See Also:

PriorityQueue.comparator()