     "metadata": {},
     "source": [
      "## Clarifying Questions\n",
      "\n",
      "* Do we assume the linked list class already exists?\n",
      "    * No, create one\n",
      "* Is this a singly or doubly linked list?\n",
      "    * Singly\n",
      "* Can you insert NULL values in the list?\n",
      "    * No\n",
      "* Can use additional data structures?\n",
 
</s> remove     "* Can use additional data structures?\n",
 </s> add     "* Can you use additional data structures?\n", </s> remove     "* Do we assume the linked list class already exists?\n",
    "    * No, create one\n",
 </s> add  </s> remove     "* Do we assume the linked list class already exists?\n",
    "    * No, create one\n",
 </s> add  </s> remove     "* Can you insert NULL values in the list?\n",
    "    * No\n",
    "* Can use additional data structures?\n",
 </s> add     "* Can you use additional data structures?\n", </s> remove     "linked_list = LinkedList(None)\n",
 </s> add     "linked_list = MyLinkedList(None)\n",
     "metadata": {},
     "source": [
      "## Clarifying Questions\n",
      "\n",


      "* Is this a singly or doubly linked list?\n",
      "    * Singly\n",
      "* Can you insert NULL values in the list?\n",
      "    * No\n",
      "* Can use additional data structures?\n",
keep keep keep keep replace replace keep keep keep keep keep
 Refactored linked list class.  Class is now loaded by other notebooks that reference it. 
linked-lists/remove-duplicates.ipynb