      "\n",
      "* Based on the function signature, it seems you have to implement this in C/C++?\n",
      "    * Yes\n",
      "* Can you use additional data structures?\n",
      "    * No"
     ]
    },
    {
     "cell_type": "markdown",
     "metadata": {},
 
</s> remove     "* [Pythonic-Code](#Pythonic-Code)"
 </s> add     "* [Pythonic-Code: Not In-Place](#Pythonic-Code:-Not-In-Place)" </s> remove     "## Pythonic Code\n",
 </s> add     "## Pythonic-Code: Not In-Place\n",
    "    * No, do the operation in-place"
      "\n",
      "* Based on the function signature, it seems you have to implement this in C/C++?\n",
      "    * Yes\n",
      "* Can you use additional data structures?\n",
    "    * No, do the operation in-place"
     ]
    },
    {
     "cell_type": "markdown",
     "metadata": {},
keep keep keep keep replace keep keep keep keep keep
 Added info about the pythonic code not being in-place. 
arrays-strings/reverse_string.ipynb