caglarorhan · October 17, 2017 04:07 · Oct 17, 2017
diff --git a/LinkedList.js b/LinkedList.js
@@ -0,0 +1,89 @@
+function LinkedList(){
+  this.head=null;
+  this.tail=null;
+}
+
+function Node(value,next,prev){
+  this.value=value;
+  this.next=next;
+  this.prev=prev;
+}
+
+
+LinkedList.prototype.addToHead = function(value){
+  var newNode = new Node(value, this.head, null);
+  if(this.head) this.head.prev=newNode; 
+  else this.tail =newNode;
+  this.head = newNode;
+
+} 
+
+LinkedList.prototype.addToTail = function(value){
+  var newNode = new Node(value, null, this.tail);
+  if(this.tail) this.tail.next = newNode;
+  else this.head = newNode;
+  this.tail = newNode;
+}
+
+
+LinkedList.prototype.removeHead = function(){
+  if(!this.head) return null;
+  var val = this.head.value;
+  this.head = this.head.next;
+  if(this.head) this.head.prev = null;
+  else this.tail = null;
+  return val;
+}
+
+LinkedList.prototype.removeTail = function(){
+  if(!this.trail) return null;
+  var val = this.trail.value;
+  this.tail =this.tail.prev;
+  if(this.tail) this.tail.next =null;
+  else this.head = null;
+  return val;
+}
+
+LinkedList.prototype.search = function(searchValue){
+   var currentNode = this.head;
+
+   while(currentNode){
+    if(currentNode.value=== searchValue){return currentNode.value;}
+    currentNode = currentNode.next;
+   }
+   return null;
+}
+
+
+LinkedList.prototype.indexOf = function(value){
+  var currentNode=this.head;
+  var indexes = [];
+  var indexNo=0;
+  while(currentNode){
+    if(currentNode.value===value){
+      indexes.push(indexNo);
+    }
+    currentNode = currentNode.next;
+    indexNo++;
+  }
+
+  return indexes;
+
+}
+
+
+
+
+var myLL = new LinkedList();
+
+myLL.addToHead(123);
+myLL.addToHead('Deneme');
+myLL.addToHead(567);
+myLL.addToHead(123);
+myLL.addToTail(345345);
+myLL.addToTail(433);
+myLL.addToTail('Deneme');
+myLL.addToTail(433);
+
+
+//console.log(myLL.indexOf(433));