<html>
<head>
<title>Struktur Data Linked List</title>
</head>
<body>
<script language = "JavaScript">
<!--
function DoublyLinkedList()
{
this._Kepala = null;
this._Ekor = null;
this._Panjang = 0;
}
DoublyLinkedList.prototype =
{
constructor: DoublyLinkedList,
Tambah: function (data)
{
var node = {data: data, next: null, prev: null};
if (this._Panjang == 0)
{
this._Kepala = node;
this._Ekor = node;
} else
{
this._Ekor.next = node;
node.prev = this._Ekor;
this._Ekor = node;
}
this._Panjang++;
},
ItemList: function(index)
{
if (index > -1 && index < this._Panjang)
{
var NodeTanda = this._Kepala,
i = 0;
while(i++ < index)
{
NodeTanda = NodeTanda.next;
}
return NodeTanda.data;
} else
{
return null;
}
},
Buang: function(index)
{
if (index > -1 && index < this._Panjang)
{
var NodeTanda = this._Kepala,
i = 0;
if (index === 0)
{
this._Kepala = NodeTanda.next;
if (!this._Kepala)
{
this._Ekor = null;
} else
{
this._Kepala.prev = null;
}
} else if (index === this._Panjang -1)
{
NodeTanda = this._Ekor;
this._Ekor = NodeTanda.prev;
this._Ekor.next = null;
} else
{
while(i++ < index)
{
NodeTanda = NodeTanda.next;
}
NodeTanda.prev.next = NodeTanda.next;
}
this._Panjang--;
return NodeTanda.data;
} else
{
return null;
}
}
}
var List = new DoublyLinkedList();
List.Tambah("Teknik Informatika");
List.Tambah("Teknik Komputer");
List.Tambah("Komputerisasi Akuntansi");
List.Tambah("Computer Networking");
document.write("Isi LinkedList <br>");
document.write("--------------- <br>");
for (i=0; i<4; i++)
{
document.write(List.ItemList(i) + "<br>") ;
}
document.write("--------------- <br>");
alert("Isi LinkedList Awal =" + List.ItemList(0));
alert("ItemList 1 pada Linked List diBuang, yaitu = " +List.ItemList(1));
List.Buang(1);
document.write("<br>Isi LinkedList Terakhir <br>");
document.write("--------------- <br>");
for (i=0; i<4; i++)
{
document.write(List.ItemList(i) + "<br>") ;
}
document.write("--------------- <br>");
//-->
</script>
</body>
</html>
