Package it.unimi.dsi.fastutil

Class PriorityQueues.SynchronizedPriorityQueue<K>

java.lang.Object
it.unimi.dsi.fastutil.PriorityQueues.SynchronizedPriorityQueue<K>
All Implemented Interfaces:
PriorityQueue<K>, Serializable
Enclosing class:
PriorityQueues
public static class PriorityQueues.SynchronizedPriorityQueue<K> extends Object implements PriorityQueue<K>, Serializable
A synchronized wrapper class for priority queues.
See Also:

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final long
    serialVersionUID
     

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    changed()
    Notifies the queue that the first element has changed (optional operation).
    void
    clear()
    Removes all elements from this queue.
    Comparator<? super K>
    comparator()
    Returns the comparator associated with this queue, or null if it uses its elements' natural ordering.
    K
    dequeue()
    Dequeues the first element from the queue.
    void
    enqueue(K x)
    Enqueues a new element.
    boolean
    equals(Object o)
     
    K
    first()
    Returns the first element of the queue.
    int
    hashCode()
     
    boolean
    isEmpty()
    Checks whether this queue is empty.
    K
    last()
    Returns the last element of the queue, that is, the element the would be dequeued last (optional operation).
    int
    size()
    Returns the number of elements in this queue.
    String
    toString()
     

    Methods inherited from class java.lang.Object

    getClass, notify, notifyAll, wait, wait, wait

  • Field Details

  • Method Details

    • enqueue

      public void enqueue(K x)
      Description copied from interface: PriorityQueue
      Enqueues a new element.
      Specified by:
      enqueue in interface PriorityQueue<K>
      Parameters:
      x - the element to enqueue.

    • dequeue

      public K dequeue()
      Description copied from interface: PriorityQueue
      Dequeues the first element from the queue.
      Specified by:
      dequeue in interface PriorityQueue<K>
      Returns:
      the dequeued element.

    • first

      public K first()
      Description copied from interface: PriorityQueue
      Returns the first element of the queue.
      Specified by:
      first in interface PriorityQueue<K>
      Returns:
      the first element.

    • last

      public K last()
      Description copied from interface: PriorityQueue
      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.

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

    • isEmpty

      public boolean isEmpty()
      Description copied from interface: PriorityQueue
      Checks whether this queue is empty.

      This default implementation checks whether PriorityQueue.size() is zero.

      Specified by:
      isEmpty in interface PriorityQueue<K>
      Returns:
      true if this queue is empty.

    • size

      public int size()
      Description copied from interface: PriorityQueue
      Returns the number of elements in this queue.
      Specified by:
      size in interface PriorityQueue<K>
      Returns:
      the number of elements in this queue.

    • clear

      public void clear()
      Description copied from interface: PriorityQueue
      Removes all elements from this queue.
      Specified by:
      clear in interface PriorityQueue<K>

    • changed

      public void changed()
      Description copied from interface: PriorityQueue
      Notifies the queue that the first element has changed (optional operation).

      This default implementation just throws an UnsupportedOperationException.

      Specified by:
      changed in interface PriorityQueue<K>

    • comparator

      public Comparator<? super K> comparator()
      Description copied from interface: PriorityQueue
      Returns the comparator associated with this queue, or null if it uses its elements' natural ordering.
      Specified by:
      comparator in interface PriorityQueue<K>
      Returns:
      the comparator associated with this sorted set, or null if it uses its elements' natural ordering.

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object

    • equals

      public boolean equals(Object o)
      Overrides:
      equals in class Object