Node* Insert(Node *head,int data)
{
    Node *temp = new Node();
    temp->data = data;
    temp->next = NULL;
   if(head==NULL)
   {
       head = temp;
   }
   else if(head->next==NULL)
   {
            head->next = temp;
            return head;
    }
    else
    {
        Insert(head->next,data);
    }
    return head;
}