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Double Linked List
<html>
<head>
<title>Struktur Data LinkedList</title>
</head>
<body bgcolor=blood>
<Script Language = "JavaScript">
<!--
alert("test");
function DoublyLinkedList()
{
this._Panjang = 0;
this._Kepala = null;
this._Ekor=null;
}
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;
}
},
Ukuran: function()
{
return this._Panjang;
},
toArray: function()
{
var result = [],
NodeTanda = this._Kepala;
while (NodeTanda)
{
result.push (NodeTanda.data);
NodeTanda = NodeTanda.next;
}
return result;
},
toString: function()
{
return this.toArray().toString();
}
}
var List = new DoublyLinkedList();
List.Tambah("Teknik Informatika");
List.Tambah("Teknik Komputer");
List.Tambah("Komputerisasi Akuntansi");
List.Tambah("Computer Networking");
document.write("Isi Double Linked List <br>");
document.write("-------------- <br>");
for (i=0; i<4; i++)
{
document.write(List.ItemList(i) + "<br>");
}
document.write("--------------- <br>");
document.write("Isi LinkedList Awal="+List.Ukuran()+"<br>");
document.write("Isi Array Awal="+List.toArray()+"<br>");
document.write("Isi String Awal="+List.toString()+"<br><br>");
alert("item List 1 pada linkedlist di buang, yaitu="+List.ItemList(1));
List.Buang(1);
document.write("Isi LinkedList Setelah di buang<br>");
document.write("-------------- <br>");
for (i=0; i<4; i++)
{
document.write(List.ItemList(i) + "<br>");
}
document.write("--------------- <br>");
document.write("Isi LinkedList Awal="+List.Ukuran()+"<br>");
document.write("Isi Array Awal="+List.toArray()+"<br>");
document.write("Isi String Awal="+List.toString()+"<br><br>");
//-->
</script>
</body>
</html>
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