it.unimi.dsi.fastutil.longs
Interface LongPriorityQueue

All Superinterfaces:
PriorityQueue<Long>
All Known Implementing Classes:
AbstractLongPriorityQueue, 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
 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 front element of the queue.
 long lastLong()
          Returns the rear 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 front element of the queue.

Returns:
the front element.
Throws:
NoSuchElementException - if the queue is empty.

lastLong

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

Returns:
the rear 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()