PHP | Ds\Deque::rotate() Function

PHP Ds\Deque::rotate() Function


Hello dear readers! welcome back to another edition of our tutorial on PHP. In this tutorial guide, we are going to be discussing about the PHP Ds Deque rotate() Function.

The built-in PHP Ds Deque rotate() function rotates the deque by a given number of rotations that is equivalent to successively calling $deque->push($deque->shift()) if the number of rotations is positive, or calling $deque->unshift($deque->pop()) if the number of rotations is negative.

Syntax

Following below is the syntax to use this function -

public void Ds\Deque::rotate( int $rotations )


Return Value

This built-in PHP function does not return any value.

Example1

Try out the below example -

<?php 
   $deque = new \Ds\Deque([1, 2, 3, 4, 5]); 
   echo("The elements in deque: \n"); 
   print_r($deque); 
   
   $deque->rotate(3); 
   echo("The rotated deque: \n"); 
   print_r($deque);
?>

Example2

Try the following example -

<?php 
   $deque = new \Ds\Deque(["Web", "Design", "Tutorialz", "Nigeria"]); 
   echo("The elements in deque: \n"); 
   print_r($deque); 
   
   $deque->rotate(3); 
   echo("The rotated deque: \n"); 
   print_r($deque); 
?>


Alright guys! This is where we are rounding up for this tutorial post. In our next tutorial guide, we are going to be discussing about the PHP Ds Deque set() Function.

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