PHP - Ds Deque sort() Function

Ds\Deque::sort() function can sort the deque in-place.

Syntax

public void Ds\Deque::sort([ callable $comparator ] )

Ds\Deque::sort() function can sort the deque in-place by using an optional comparator function.

Ds\Deque::sort() function doesn't return any value.

Example 1

<?php 
   $deque = new \Ds\Deque([5, 3, 8, 1, 7, 4]); 
   echo("The elements in deque: \n"); 
   print_r($deque); 
   
   $deque->sort(); 
   echo("The elements after sorting in deque: \n"); 
   print_r($deque);
?>

Example 2

<?php 
   $deque = new \Ds\Deque([5, 3, 8, 1, 7, 4]); 
   echo("The elements of deque: \n"); 
   print_r($deque); 
   
   $deque->sort(function($first, $second) { 
      return $first <= $second; 
   }); 
   echo("The elements after sorting in deque: \n"); 
   print_r($deque);
?>