     "metadata": {},
     "source": [
      "## Constraints\n",
      "\n",
      "* Is this a singly or doubly linked list?\n",
      "    * Singly\n",
      "* Can you insert None values in the list?\n",
      "    * No\n",
      "* Can we assume we already have a linked list class that can be used for this problem?\n",
      "    * Yes\n",
      "* Can we use additional data structures?\n",
 
</s>
    "* Can we assume this is a non-circular, singly linked list?\n",
    "    * Yes\n",
     "metadata": {},
     "source": [
      "## Constraints\n",
      "\n",
    "* Can we assume this is a non-circular, singly linked list?\n",
    "    * Yes\n",
    "* Can we assume this is a non-circular, singly linked list?\n",
    "    * Yes\n",
      "* Can you insert None values in the list?\n",
      "    * No\n",
      "* Can we assume we already have a linked list class that can be used for this problem?\n",
      "    * Yes\n",
      "* Can we use additional data structures?\n",
keep keep keep keep replace replace keep keep keep keep keep
 Update linked list constraints

Specify singly linked list, non circular.  Also specify the solution fits in memory.
linked_lists/remove_duplicates/remove_duplicates_solution.ipynb