      "\n",
      "* [Clarifying Questions](#Clarifying-Questions)\n",
      "* [Test Cases](#Test-Cases)\n",
      "* [Algorithm](#Algorithm)\n",
      "* [Code](#Code)"
     ]
    },
    {
     "cell_type": "markdown",
     "metadata": {},
 
</s> remove     "* [Clarifying Questions](#Clarifying-Questions)\n",
 </s> add     "* [Constraints and Assumptions](#Constraints-and-Assumptions)\n", </s> remove     "## Clarifying Questions\n",
 </s> add     "## Constraints and Assumptions\n", </s> remove     "* Can we assume we have a Stack class to use?\n",
 </s> add     "*Problem statements are often intentionally ambiguous.  Identifying constraints and stating assumptions can help to ensure you code the intended solution.*\n",
    "\n",
    "* Can we assume we already have a stack class that can be used for this problem?\n",
    "    * Yes\n",
    "* If a stack becomes full, we should automatically create one?\n",
    "    * Yes\n",
    "* If a stack becomes empty, should we delete it?\n", </s> remove    "execution_count": null,
 </s> add    "execution_count": 3,
    "* [Code](#Code)\n",
    "* [Unit Test](#Unit-Test)"
      "\n",
      "* [Clarifying Questions](#Clarifying-Questions)\n",
      "* [Test Cases](#Test-Cases)\n",
      "* [Algorithm](#Algorithm)\n",
    "* [Code](#Code)\n",
    "* [Unit Test](#Unit-Test)"
     ]
    },
    {
     "cell_type": "markdown",
     "metadata": {},
keep keep keep keep replace keep keep keep keep keep
 Reworked notebook: Added more detail to constraints and test cases.  Reworked unit test. 
stacks-queues/set-of-stacks.ipynb