PHP | Ds\Deque reversed() Function
The Ds\Deque::reversed() function is an inbuilt function in PHP which is used to return the copy of Deque which contains the elements in reversed order.
Syntax:
public Ds\Deque::reversed( void ) : Ds\Deque
Parameters: This function does not accept any parameter.
Return Value: This function returns a Deque which is the copy of original Deque containing the elements in reverse order.
Below programs illustrate the Ds\Deque::reversed() function in PHP:
Program 1:
<?php // Declare a deque $deck = new \Ds\Deque([10, 20, 30, 40, 50, 60]); echo("Elements of Deque\n"); // Display the Deque elements var_dump($deck); // Reversing the deque $deck_new = $deck->reversed(); echo("\nElements of the reversed deque\n"); // Display the Deque elements var_dump($deck_new); ?> |
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Output:
Elements of Deque
object(Ds\Deque)#1 (6) {
[0]=>
int(10)
[1]=>
int(20)
[2]=>
int(30)
[3]=>
int(40)
[4]=>
int(50)
[5]=>
int(60)
}
Elements of the reversed deque
object(Ds\Deque)#2 (6) {
[0]=>
int(60)
[1]=>
int(50)
[2]=>
int(40)
[3]=>
int(30)
[4]=>
int(20)
[5]=>
int(10)
}
Program 2:
<?php // Declare a deque $deck = new \Ds\Deque(["geeks", "for", "geeks", "articles"]); echo("Elements of Deque\n"); // Display the Deque elements print_r($deck); // Reversing the deque $deck_new = $deck->reversed(); echo("\nElements of the reversed deque\n"); // Display the Deque elements print_r($deck_new); ?> |
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Output:
Elements of Deque
Ds\Deque Object
(
[0] => geeks
[1] => for
[2] => geeks
[3] => articles
)
Elements of the reversed deque
Ds\Deque Object
(
[0] => articles
[1] => geeks
[2] => for
[3] => geeks
)
Reference: http://php.net/manual/en/ds-deque.reversed.php
