PHP - Ds Deque slice() Function

Ds\Deque::slice() function can return the sub-deque of a given range.

Syntax

public Ds\Deque Ds\Deque::slice( int $index [, int $length ] )

Ds\Deque::slice() function can create the sub-deque of a given range.

Example 1

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

Example 2

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