PHP 5.4.35 Released

SplDoublyLinkedList::bottom

(PHP 5 >= 5.3.0)

SplDoublyLinkedList::bottomPeeks at the node from the beginning of the doubly linked list

Beschreibung

public mixed SplDoublyLinkedList::bottom ( void )

Parameter-Liste

Diese Funktion hat keine Parameter.

R├╝ckgabewerte

The value of the first node.

Fehler/Exceptions

Throws RuntimeException when the data-structure is empty.

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User Contributed Notes 2 notes

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0
rakesh dot mishra at gmail dot com
3 years ago
<?php

/*
* Examples of DoublyLinkedList
*/

$obj = new SplDoublyLinkedList();

// Check wither linked list is empty
if ($obj->isEmpty())
{
    echo
"Adding nodes to Linked List<br>";
   
$obj->push(2);
   
$obj->push(3);
   
    echo
"Adding the node at beginning of doubly linked list <br>";
   
$obj->unshift(10);
}

echo
"<br>Our Linked List:";
print_r($obj);

echo
"<br>Pick the node from beginning of doubly linked list";
echo
$obj->bottom();

?>
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-1
tstirrat at gmail dot com
6 months ago
A note on top() and bottom():

Picture the doubly-linked list (or queue) in the same way that you would a stack.

Say you started with an empty queue, and added five values:

$myList = new SplDoublyLinkedList

$mylist->push(1)
$mylist->push(2)
$mylist->push(3)
$mylist->push(4)
$mylist->push(5)

$mylist->top()
-> 5

$mylist->bottom()
-> 1
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