def insert(self,data,position):
  if(position==0):
   newnode=Node(data)
   newnode.next=self.head
   self.head=newnode
  elif(position>self.size):
   print("\n\nIndex is out of range\n\n")
  elif(position==self.size):
   self.append(data)
  else:
   current=self.head
   count=0
   while(current!=None):
    if(count==position-2):
     break
    else:
     count+=1
     current=current.next
   newnode=Node(data)
   newnode.next=current.next
   current.next=newnode