PHP Ds\PriorityQueue copy() Function
The Ds\PriorityQueue::copy() Function in PHP is used to create a shallow copy of a particular PriorityQueue instance. This function does not affect the existing PriorityQueue instance, it just creates a shallow copy of the PriorityQueue and returns it.
Syntax:
Ds\PriorityQueue public Ds\PriorityQueue::copy ( void )
Parameters: This function does not accepts any parameters.
Return Value: This function creates a shallow copy of an existing PriorityQueue instance and returns it.
Below programs illustrate the Ds\PriorityQueue::copy() Function in PHP:
Program 1:
<?php // Declare new PriorityQueue $pq = new \Ds\PriorityQueue(); // Add elements to the PriorityQueue $pq->push("One", 1); $pq->push("Two", 2); $pq->push("Three", 3); // Create copy of this PriorityQueue // instance and print it print_r($pq->copy()); ?> |
Output:
Ds\PriorityQueue Object
(
[0] => Three
[1] => Two
[2] => One
)
Program 2:
<?php // Declare new PriorityQueue $pq = new \Ds\PriorityQueue(); // Add elements to the PriorityQueue $pq->push("Geeks", 1); $pq->push("for", 2); $pq->push("Geeks", 3); // Create copy of this PriorityQueue // instance and print it print_r($pq->copy()); ?> |
Output:
Ds\PriorityQueue Object
(
[0] => Geeks
[1] => for
[2] => Geeks
)
Reference: http://php.net/manual/en/ds-priorityqueue.copy.php
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