returns the head of the doubly linked list . concode_field_sep DLLNode next concode_elem_sep DLLNode head concode_elem_sep int length concode_elem_sep int data concode_elem_sep DLLNode prev concode_elem_sep DLLNode tail concode_field_sep DLLNode deleteFromTheEnd concode_elem_sep void setTail concode_elem_sep DLLNode getTail concode_elem_sep void setData concode_elem_sep DLLNode deleteNodeAtPosition concode_elem_sep DLLNode getNext concode_elem_sep DLLNode decapitate concode_elem_sep DLLNode getPrev concode_elem_sep void insertAtBeginning concode_elem_sep void insertAtTheEnd concode_elem_sep void setNext concode_elem_sep int getLength concode_elem_sep String toString concode_elem_sep void setPrev concode_elem_sep void insertAtThePosition concode_elem_sep int getData
DLLNode function ( ) { return head ; }