Package ghidra.util.datastruct

Class PriorityQueue<T>

  • public class PriorityQueue<T>
extends java.lang.Object
    Maintains a list of objects in priority order where priority is just an integer value. The object with the lowest priority number can be retrieved using getFirst() and the object with the highest priority number can be retrieved using getLast().

    • Constructor Summary

      Constructors 
      Constructor Description
      PriorityQueue()  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void add​(T obj, int priority)
      Adds the given object to the queue at the appropriate insertion point based on the given priority.
      void clear()
      Removes all objects from the queue.
      T getFirst()
      Returns the object with the lowest priority number in the queue.
      java.lang.Integer getFirstPriority()
      Returns the priority of the object with the lowest priority in the queue.
      T getLast()
      Returns the object with the highest priority number in the queue.
      java.lang.Integer getLastPriority()
      Returns the priority of the object with the highest priority in the queue.
      boolean isEmpty()
      Returns true if the queue is empty.
      T removeFirst()
      Removes and returns the object with the lowest priority number in the queue.
      T removeLast()
      Removes and returns the object with the highest priority number in the queue.
      int size()
      Returns the number of objects in the queue.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • PriorityQueue

        public PriorityQueue()

    • Method Detail

      • add

        public void add​(T obj,
                int priority)
        Adds the given object to the queue at the appropriate insertion point based on the given priority.
        Parameters:
        obj - the object to be added.
        priority - the priority assigned to the object.

      • size

        public int size()
        Returns the number of objects in the queue.

      • isEmpty

        public boolean isEmpty()
        Returns true if the queue is empty.

      • getFirst

        public T getFirst()
        Returns the object with the lowest priority number in the queue. If more than one object has the same priority, then the object that was added to the queue first is considered to have the lower priority value. Null is returned if the queue is empty.

      • getFirstPriority

        public java.lang.Integer getFirstPriority()
        Returns the priority of the object with the lowest priority in the queue. Null returned if the queue is empty.

      • getLast

        public T getLast()
        Returns the object with the highest priority number in the queue. If more than one object has the same priority, then the object that was added to the queue last is considered to have the higher priority value. Null is returned if the queue is empty.

      • getLastPriority

        public java.lang.Integer getLastPriority()
        Returns the priority of the object with the highest priority in the queue. Null returned if the queue is empty.

      • removeFirst

        public T removeFirst()
        Removes and returns the object with the lowest priority number in the queue. If more than one object has the same priority, then the object that was added to the queue first is considered to have the lower priority value. Null is returned if the queue is empty.
        Returns:
        the object with the lowest priority number or null if the list is empty.

      • removeLast

        public T removeLast()
        Removes and returns the object with the highest priority number in the queue. If more than one object has the same priority, then the object that was added to the queue last is considered to have the higher priority value. Null is returned if the queue is empty.
        Returns:
        the object with the highest priority number or null if the list is empty.

      • clear

        public void clear()
        Removes all objects from the queue.