PHP - Ds Deque find() Function

Ds\Deque::find() function can attempt to find a value's index.

Syntax

public mixed Ds\Deque::find( mixed $value )

Ds\Deque::find() function can return an index of the value, or false if not found.

Example 1

<?php 
   $deque = new \Ds\Deque([10, 20, 5, 40, 50, 8]); 
   echo("The elements in the deque: \n"); 
   print_r($deque); 
   print_r($deque->find(3));
?>

Example 2

<?php    
   $deque = new \Ds\Deque(["Tutorials", "Point", "India"]); 
   echo("The elements in the deque: \n"); 
   print_r($deque); 
   var_dump($deck->find("TPT")); 
?>