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The PriorityQueue class

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Introduction

A PriorityQueue is very similar to a Queue. Values are pushed into the queue with an assigned priority, and the value with the highest priority will always be at the front of the queue.

Implemented using a max heap.

Note:

"First in, first out" ordering is preserved for values with the same priority.

Note:

Iterating over a PriorityQueue is destructive, equivalent to successive pop operations until the queue is empty.

Class synopsis

Ds\PriorityQueue implements Ds\Collection {
/* Constants */
const int MIN_CAPACITY = 8 ;
/* Methods */
public allocate ( int $capacity ) : void
public capacity ( void ) : int
public clear ( void ) : void
public copy ( void ) : Ds\PriorityQueue
public isEmpty ( void ) : bool
public peek ( void ) : mixed
public pop ( void ) : mixed
public push ( mixed $value , int $priority ) : void
public toArray ( void ) : array
}

Predefined Constants

Ds\PriorityQueue::MIN_CAPACITY

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