      "        # Output: 4, 3, 8, 1, 10, 10, 13, 14, 12\n",
      "        linked_list = MyLinkedList(Node(12))\n",
      "        linked_list.insert_to_front(10)\n",
      "        linked_list.insert_to_front(1)\n",
      "        linked_list.insert_to_front(10)\n",
      "        linked_list.insert_to_front(8)\n",
      "        linked_list.insert_to_front(13)\n",
      "        linked_list.insert_to_front(3)\n",
      "        linked_list.insert_to_front(4)\n",
 
</s> remove     "        # Input: 4, 3, 7, 8, 10, 1, 10, 12\n",
    "        # Output: 4, 3, 7, 8, 1, 10, 10, 12\n",
 </s> add     "        # Input: 4, 3, 13, 8, 10, 1, 14, 10, 12\n",
    "        # Output: 4, 3, 8, 1, 10, 10, 13, 14, 12\n", </s> remove     "        # Input: 4, 3, 7, 8, 10, 1, 10, 12\n",
    "        # Output: 4, 3, 7, 8, 1, 10, 10, 12\n",
 </s> add     "        # Input: 4, 3, 13, 8, 10, 1, 14, 10, 12\n",
    "        # Output: 4, 3, 8, 1, 10, 10, 13, 14, 12\n", </s> remove     "        linked_list.insert_to_front(7)\n",
 </s> add     "        linked_list.insert_to_front(13)\n", </s> remove     "        linked_list.insert_to_front(7)\n",
 </s> add     "        linked_list.insert_to_front(13)\n",
    "        linked_list.insert_to_front(14)\n",
      "        # Output: 4, 3, 8, 1, 10, 10, 13, 14, 12\n",
      "        linked_list = MyLinkedList(Node(12))\n",
      "        linked_list.insert_to_front(10)\n",
    "        linked_list.insert_to_front(14)\n",
      "        linked_list.insert_to_front(1)\n",
      "        linked_list.insert_to_front(10)\n",
      "        linked_list.insert_to_front(8)\n",
      "        linked_list.insert_to_front(13)\n",
      "        linked_list.insert_to_front(3)\n",
      "        linked_list.insert_to_front(4)\n",
keep keep add keep keep keep keep keep keep
 Fixed #21: Partitioning linked list problem: Does not work if item greater than partition value is to the left. 
linked_lists/partition/partition_solution.ipynb