PHP - Ds Deque sum() Function

Ds\Deque::sum() function can return the sum of all values in the deque.

Syntax

public number Ds\Deque::sum( void )

Ds\Deque::sum() function doesn't have any parameters.

Ds\Deque::sum() function can return the sum of all values in the deque as either float or int depending on values in the deque.

Example

<?php 
   $deque = new \Ds\Deque([5, 8, 1, 7, 3, 1]); 
   echo("The elements in deque: \n"); 
   print_r($deque); 
   
   echo("The sum of all deque elements: "); 
   var_dump($deque->sum()); 
?>