PHP creates linked lists and adds, deletes, updates and traverses linked list nodes

This article mainly introduces PHP to create a linked list and the addition, deletion, update and traversal of linked list nodes. Interested friends can refer to it. I hope it will be helpful to everyone.

The examples in this article describe the usage of PHP linked lists, as follows:

Here is a brief introduction to the basic usage of PHP linked lists, including the creation, traversal, and update of linked list nodes.

Data=$value;
  }
  public function setNext($value){
     $this->Next=$value;
  }  
  public function getData(){
    return $this->Data;
  }
  public function getNext(){
    return $this->Next;
  }
  public function __construct($data,$next){
    $this->setData($data);
    $this->setNext($next);
  }
}//功能类
class LinkList
{
  private $header;//头节点
  private $size;//长度
  public function getSize(){
    $i=0;
    $node=$this->header;
    while($node->getNext()!=null)
    {  $i++;
      $node=$node->getNext();
    }
   return $i;
  }
  public function setHeader($value){
    $this->header=$value;
  }
  public function getHeader(){
    return $this->header;
  }
  public function __construct(){
     header("content-type:text/html; charset=utf-8");
    $this->setHeader(new Node(null,null));
  }
  /**
  *@author MzXy
  *@param $data--要添加节点的数据
  * 
  */
  public function add($data)
  {
    $node=$this->header;
    while($node->getNext()!=null)
    {
      $node=$node->getNext();
    }
    $node->setNext(new Node($data,null));
  }
   /**
  *@author MzXy
  *@param $data--要移除节点的数据
  * 
  */
  public function removeAt($data)
  {
    $node=$this->header;
    while($node->getData()!=$data)
    {
      $node=$node->getNext();
    }
    $node->setNext($node->getNext());
    $node->setData($node->getNext()->getData());
  }
   /**
  *@author MzXy
  *@param 遍历
  * 
  */
  public function get()
  {
    $node=$this->header;
    if($node->getNext()==null){
      print("数据集为空!");
      return;
    }
    while($node->getNext()!=null)
    {
      print($node->getNext()->getData());
      if($node->getNext()->getNext()==null){break;}
      $node=$node->getNext();
    }
  }
   /**
  *@author MzXy
  *@param $data--要访问的节点的数据
  * @param 此方法只是演示不具有实际意义
  * 
  */
  public function getAt($data)
  {
    $node=$this->header->getNext();
     if($node->getNext()==null){
      print("数据集为空!");
      return;
    }
    while($node->getData()!=$data)
    {
      if($node->getNext()==null){break;}
      $node=$node->getNext();
    }
    return $node->getData();    
  }
   /**
  *@author MzXy
  *@param $value--需要更新的节点的原数据 --$initial---更新后的数据
  * 
  */
  public function update($initial,$value)
  {
     $node=$this->header->getNext();
     if($node->getNext()==null){
      print("数据集为空!");
      return;
    }
    while($node->getData()!=$data)
    {
      if($node->getNext()==null){break;}
      $node=$node->getNext();
    }
     $node->setData($initial);   
  }
}
?>

Summary: The above is the entire content of this article, I hope it will be helpful to everyone's study.

Related recommendations:

php medium cache classification database cache

php file upload management system

php implements the import and export function of CSV format data

The above is the detailed content of PHP creates linked lists and adds, deletes, updates and traverses linked list nodes. For more information, please follow other related articles on the PHP Chinese website!