     "metadata": {},
     "source": [
      "## Test Cases\n",
      "\n",
      "* 5, 3, 8, 2, 4, 1, 7, 6, 9, 10, 11 -> [[5], [3, 8], [2, 4, 7, 9], [1, 6, 10], [11]]"
     ]
    },
    {
     "cell_type": "markdown",
     "metadata": {},
 
</s>
    "* 5, 3, 8, 2, 4, 1, 7, 6, 9, 10, 11 -> [[5], [3, 8], [2, 4, 7, 9], [1, 6, 10], [11]]\n",
    "\n",
    "Note: Each number in the result is actually a node containing the number"
     "metadata": {},
     "source": [
      "## Test Cases\n",
      "\n",
    "* 5, 3, 8, 2, 4, 1, 7, 6, 9, 10, 11 -> [[5], [3, 8], [2, 4, 7, 9], [1, 6, 10], [11]]\n",
    "\n",
    "Note: Each number in the result is actually a node containing the number"
     ]
    },
    {
     "cell_type": "markdown",
     "metadata": {},
keep keep keep keep replace keep keep keep keep keep
 Polish tree level lists challenge and solution (#79)

Update constraints and test cases.
graphs_trees/tree_level_lists/tree_level_lists_solution.ipynb