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The SplStack class

Introduction

کلاس SplStack عملکرد اصلی پشته را با استفاده از لیست دو پیوندی پیاده می‌کند.

Class synopsis

SplStack extends SplDoublyLinkedList implements Iterator , ArrayAccess , Countable {
/* Methods */
__construct ( void )
void setIteratorMode ( int $mode )
/* Inherited methods */
mixed SplDoublyLinkedList::key ( void )
void SplDoublyLinkedList::offsetSet ( mixed $index , mixed $newval )
mixed SplDoublyLinkedList::pop ( void )
mixed SplDoublyLinkedList::top ( void )
}

Table of Contents

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User Contributed Notes 3 notes

up
6
lsroudi at gmail dot com
7 months ago
the SplStack is  simply a SplDoublyLinkedList with  an iteration mode IT_MODE_LIFO and IT_MODE_KEEP
up
5
lsroudi at gmail dot com
7 months ago
<?php

/**
* Description of Stack
*
* (c) lsroudi <http://lsroudi.com/> <lsroudi@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
class Stack {

    private
$splstack;

    function
__construct(\SplStack $splstack)
    {
       
$this->splstack = $splstack;
    }

    public function
calculateSomme()
    {

        if (
$this->splstack->count() > 1){
           
$val1 = $this->splstack->pop();
           
$val2 = $this->splstack->pop();
           
$val = $val1 + $val2;
           
$this->splstack->push($val);
           
$this->calculateSomme();
        }
    }

   
/**
     *
     * @return integer
     */
   
public function displaySomme()
    {
       
$result = $this->splstack->pop();
        return
$result;
    }

}

$splstack = new \SplStack();

$splstack->push(10);
$splstack->push(10);
$splstack->push(10);
$splstack->push(10);
$splstack->push(10);
$splstack->push(10);
$splstack->push(10);
$splstack->push(10);
$splstack->push(10);
$splstack->push(10);
$splstack->push(10);
$splstack->push(10);
$splstack->push(10);
$splstack->push(10);
$splstack->push(10);

$stack = new Stack($splstack);
$stack->calculateSomme();
die(
var_dump($stack->displaySomme())); // 150
?>
source : https://github.com/lsroudi/OOPWithSPL/blob/master/Stack/Stack.php
up
-21
Sandro Alves Peres
1 year ago
<?php
# Think of the stack as an array reversed, where the last element has index zero

$stack = new SplStack();
$stack->push('a');
$stack->push('b');
$stack->push('c');

$stack->offsetSet(0, 'C'); # the last element has index zero

$stack->rewind();

while(
$stack->valid() )
{
    echo
$stack->current(), PHP_EOL;
   
$stack->next();
}

/*

OUTPUT
****************************

C
b
a

*/
?>
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