#!/usr/bin/python2.7

from UserDict import UserDict


class LinkedList(UserDict):
    pass
    """Use a dict to implement the Linked List data structure."""


class DoubleLinkedList(UserDict):
    pass
    """Use a dict to implement a doubly linked list data structure."""


class FingerTree(UserDict):
    pass
    """Use dicts to implement finger trees in python."""
