Package 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

    Modifier and Type Method Description
    LongComparator comparator()
    Returns the comparator associated with this priority queue, or null if it uses its elements' natural ordering.
    default Long dequeue()
    Deprecated.
    Please use the corresponding type-specific method instead.
    long dequeueLong()
    Dequeues the first element from the queue.
    void enqueue​(long x)
    Enqueues a new element.
    default void enqueue​(Long x)
    Deprecated.
    Please use the corresponding type-specific method instead.
    default Long first()
    Deprecated.
    Please use the corresponding type-specific method instead.
    long firstLong()
    Returns the first element of the queue.
    default Long last()
    Deprecated.
    Please use the corresponding type-specific method instead.
    default 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, isEmpty, size

  • Method Details

    • enqueue

      void enqueue​(long x)
      Enqueues a new element.
      Parameters:
      x - the element to enqueue.
      See Also:
      PriorityQueue.enqueue(Object)

    • dequeueLong

      long dequeueLong()
      Dequeues the first element from the queue.
      Returns:
      the dequeued element.
      Throws:
      NoSuchElementException - if the queue is empty.
      See Also:
      dequeue()

    • firstLong

      long firstLong()
      Returns the first element of the queue.
      Returns:
      the first element.
      Throws:
      NoSuchElementException - if the queue is empty.
      See Also:
      first()

    • lastLong

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

      This default implementation just throws an UnsupportedOperationException.

      Returns:
      the last element.
      Throws:
      NoSuchElementException - if the queue is empty.
      See Also:
      last()

    • comparator

      LongComparator comparator()
      Returns the comparator associated with this priority queue, 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 priority queue.
      See Also:
      PriorityQueue.comparator()

    • enqueue

      @Deprecated default void enqueue​(Long x)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Enqueues a new element.

      This default implementation delegates to the corresponding type-specific method.

      Specified by:
      enqueue in interface PriorityQueue<Long>
      Parameters:
      x - the element to enqueue.

    • dequeue

      @Deprecated default Long dequeue()
      Deprecated.
      Please use the corresponding type-specific method instead.
      Dequeues the first element from the queue.

      This default implementation delegates to the corresponding type-specific method.

      Specified by:
      dequeue in interface PriorityQueue<Long>
      Returns:
      the dequeued element.

    • first

      @Deprecated default Long first()
      Deprecated.
      Please use the corresponding type-specific method instead.
      Returns the first element of the queue.

      This default implementation delegates to the corresponding type-specific method.

      Specified by:
      first in interface PriorityQueue<Long>
      Returns:
      the first element.

    • last

      @Deprecated default Long last()
      Deprecated.
      Please use the corresponding type-specific method instead.
      Returns the last element of the queue, that is, the element the would be dequeued last (optional operation).

      This default implementation just throws an UnsupportedOperationException.

      This default implementation delegates to the corresponding type-specific method.

      Specified by:
      last in interface PriorityQueue<Long>
      Returns:
      the last element.