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    "<p style=\"float: left;\"><a href=\"higher-order-functions.ipynb\" target=\"_blank\">Previous</a></p>\n",
    "<p style=\"float: right;\"><a href=\"multiple-parameter-lists.ipynb\" target=\"_blank\">Next</a></p>\n",
    "<p style=\"text-align:center;\">Tour of Scala</p>\n",
    "<div style=\"clear: both;\"></div>\n",
    "\n",
    "# Nested Methods\n",
    "\n",
    "In Scala it is possible to nest method definitions. The following object provides a `factorial` method for computing the factorial of a given number:"
   ]
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      "Factorial of 2: 2\n",
      "Factorial of 3: 6\n"
     ]
    },
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       "defined \u001b[32mfunction\u001b[39m \u001b[36mfactorial\u001b[39m"
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    " def factorial(x: Int): Int = {\n",
    "    def fact(x: Int, accumulator: Int): Int = {\n",
    "      if (x <= 1) accumulator\n",
    "      else fact(x - 1, x * accumulator)\n",
    "    }  \n",
    "    fact(x, 1)\n",
    " }\n",
    "\n",
    " println(\"Factorial of 2: \" + factorial(2))\n",
    " println(\"Factorial of 3: \" + factorial(3))"
   ]
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   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "The output of this program is:"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "```\n",
    "Factorial of 2: 2\n",
    "Factorial of 3: 6\n",
    "```\n"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "<p style=\"float: left;\"><a href=\"higher-order-functions.ipynb\" target=\"_blank\">Previous</a></p>\n",
    "<p style=\"float: right;\"><a href=\"multiple-parameter-lists.ipynb\" target=\"_blank\">Next</a></p>\n",
    "<p style=\"text-align:center;\">Tour of Scala</p>\n",
    "<div style=\"clear: both;\"></div>"
   ]
  }
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