Example of simple implementation of circular linked list function in PHP

This article mainly introduces the simple implementation of the circular linked list function in PHP, briefly describes the concept and functions of the circular linked list, and analyzes the PHP definition and related operating skills of using the circular linked list in the form of examples. Friends who need it can refer to it

Overview:

Circular linked list is another form of linked storage structure. Its characteristic is that the pointer field of the last node in the list points to the head node, and the entire linked list forms a ring.

As shown below:

data=$data;
    $this->link=$link;
  }
}
class cycleLinkList{
  public $head;
  public function __construct($data,$link=null){
    $this->head=new node($data,$link);
    $this->head->link=$this->head;
  }
  public function insertLink($data){
    $p=new node($data);
    $q=$this->head->link;
    $r=$this->head;
    if($q==$r)
    {
      $q->link=$p;
      $p->link=$q;
      return;
    }
    while($q!=$this->head){
      $r=$q;$q=$q->link;
    }
    $r->link=$p;
    $p->link=$this->head;
  }
}
$linklist=new cycleLinkList(1);
for($i=2;$i<11;$i++){
   $linklist->insertLink($i);
}
$q=$linklist->head->link;
echo $linklist->head->data;
while($q!=$linklist->head){
  echo $q->data;
  $q=$q->link;
}
echo "
--------------------------
";
$p=$linklist->head;
$r=$p;
$n=10;
$i=2;
while($n)
{
    while(0!=$i){
    $r=$p;$p=$p->link;
    $i--;
    }
    echo $p->data;
    $r->link=$p->link;
    $tmp=$p;
    $p=$p->link;
    unset($tmp);
    $n--;
    $i=2;
}

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