StackOverflow2013

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plurals

PO
primarykey
Id
12954568
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
2
CommunityOwnedDate
CreationDate
2012-10-18T12:23:16.927
FavoriteCount
0
LastActivityDate
2014-03-28T17:41:43.780
LastEditDate
2014-03-28T17:41:43.780
LastEditorUserId
445131
OwnerUserId
1750147
ParentId
3630969
PostTypeId
2
Score
16
ViewCount
0
LastEditorDisplayName
text
Body
<p>Here is a linked list implementation in PHP pulled from: <a href="http://www.codediesel.com/php/linked-list-in-php/">http://www.codediesel.com/php/linked-list-in-php/</a> which can add, delete, reverse and empty a linkedlist in PHP.</p> <pre><code><?php class ListNode { public $data; public $next; function __construct($data) { $this->data = $data; $this->next = NULL; } function readNode() { return $this->data; } } class LinkList { private $firstNode; private $lastNode; private $count; function __construct() { $this->firstNode = NULL; $this->lastNode = NULL; $this->count = 0; } //insertion at the start of linklist public function insertFirst($data) { $link = new ListNode($data); $link->next = $this->firstNode; $this->firstNode = &$link; /* If this is the first node inserted in the list then set the lastNode pointer to it. */ if($this->lastNode == NULL) $this->lastNode = &$link; $this->count++; } //displaying all nodes of linklist public function readList() { $listData = array(); $current = $this->firstNode; while($current != NULL) { array_push($listData, $current->readNode()); $current = $current->next; } foreach($listData as $v){ echo $v." "; } } //reversing all nodes of linklist public function reverseList() { if($this->firstNode != NULL) { if($this->firstNode->next != NULL) { $current = $this->firstNode; $new = NULL; while ($current != NULL) { $temp = $current->next; $current->next = $new; $new = $current; $current = $temp; } $this->firstNode = $new; } } } //deleting a node from linklist $key is the value you want to delete public function deleteNode($key) { $current = $this->firstNode; $previous = $this->firstNode; while($current->data != $key) { if($current->next == NULL) return NULL; else { $previous = $current; $current = $current->next; } } if($current == $this->firstNode) { if($this->count == 1) { $this->lastNode = $this->firstNode; } $this->firstNode = $this->firstNode->next; } else { if($this->lastNode == $current) { $this->lastNode = $previous; } $previous->next = $current->next; } $this->count--; } //empty linklist public function emptyList() { $this->firstNode == NULL; } //insertion at index public function insert($NewItem,$key){ if($key == 0){ $this->insertFirst($NewItem); } else{ $link = new ListNode($NewItem); $current = $this->firstNode; $previous = $this->firstNode; for($i=0;$i<$key;$i++) { $previous = $current; $current = $current->next; } $previous->next = $link; $link->next = $current; $this->count++; } } } $obj = new LinkList(); $obj->insertFirst($value); $obj->insert($value,$key); // at any index $obj->deleteNode($value); $obj->readList(); </code></pre>
Tags
Title
singulars
PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. POImplement linked list in php
  singulars
  PostTypePostTypeId
  PTQuestion
PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. USEric Leschinski
UserOwnerUserId
1. USLal Zada
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. This table or related slice is empty.
VotesPostIdCreationDate
1. VO
  singulars
  PostPostId
  PO
  UserUserId
  This table or related slice is empty.
  VoteTypeVoteTypeId
  VTUpMod
CommentsPostId
1. This table or related slice is empty.

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