PHP Ds Deque count()用法及代碼示例

Ds\Deque::count() 函數可用於獲取 Deque 中的元素數量。

用法

public Ds\Deque::count( void ):int

Ds\Deque::count() 函數沒有任何參數。該函數可以返回 Deque 中元素的數量。

例子1

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

例子2

<?php 
   $deque = new \Ds\Deque(["Tutorials", "Point", "Tutorix"]); 
   echo("The elements in the deque:\n"); 
   print_r($deque); 
   
   echo("\n The number of elements in the deque:"); 
   print_r($deque->count()); 
?>