{ "cells": [ { "cell_type": "markdown", "metadata": {}, "source": [ "This notebook was prepared by [Donne Martin](https://github.com/donnemartin). Source and license info is on [GitHub](https://github.com/donnemartin/interactive-coding-challenges)." ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "# Challenge Notebook" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "## Problem: Implement Fizz Buzz.\n", "\n", "* [Constraints](#Constraints)\n", "* [Test Cases](#Test-Cases)\n", "* [Algorithm](#Algorithm)\n", "* [Code](#Code)\n", "* [Unit Test](#Unit-Test)\n", "* [Solution Notebook](#Solution-Notebook)" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "## Constraints\n", "\n", "* What is fizz buzz?\n", " * Return the string representation of numbers from 1 to n\n", " * Multiples of 3 -> 'Fizz'\n", " * Multiples of 5 -> 'Buzz'\n", " * Multiples of 3 and 5 -> 'FizzBuzz'\n", "* Can we assume the inputs are valid?\n", " * No\n", "* Can we assume this fits memory?\n", " * Yes" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "## Test Cases\n", "\n", "
```\n",
"* None -> Exception\n",
"* < 1 -> Exception\n",
"* 15 ->\n",
"[\n",
"    '1',\n",
"    '2',\n",
"    'Fizz',\n",
"    '4',\n",
"    'Buzz',\n",
"    'Fizz',\n",
"    '7',\n",
"    '8',\n",
"    'Fizz',\n",
"    'Buzz',\n",
"    '11',\n",
"    'Fizz',\n",
"    '13',\n",
"    '14',\n",
"    'FizzBuzz'\n",
"]\n",
"```
" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "## Algorithm\n", "\n", "Refer to the [Solution Notebook](http://nbviewer.ipython.org/github/donnemartin/interactive-coding-challenges/blob/master/arrays_strings/fizz_buzz/fizz_buzz_solution.ipynb). If you are stuck and need a hint, the solution notebook's algorithm discussion might be a good place to start." ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "## Code" ] }, { "cell_type": "code", "execution_count": null, "metadata": {}, "outputs": [], "source": [ "class Solution(object):\n", "\n", " def fizz_buzz(self, num):\n", " # TODO: Implement me\n", " pass" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "## Unit Test" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "**The following unit test is expected to fail until you solve the challenge.**" ] }, { "cell_type": "code", "execution_count": null, "metadata": {}, "outputs": [], "source": [ "# %load test_fizz_buzz.py\n", "import unittest\n", "\n", "\n", "class TestFizzBuzz(unittest.TestCase):\n", "\n", " def test_fizz_buzz(self):\n", " solution = Solution()\n", " self.assertRaises(TypeError, solution.fizz_buzz, None)\n", " self.assertRaises(ValueError, solution.fizz_buzz, 0)\n", " expected = [\n", " '1',\n", " '2',\n", " 'Fizz',\n", " '4',\n", " 'Buzz',\n", " 'Fizz',\n", " '7',\n", " '8',\n", " 'Fizz',\n", " 'Buzz',\n", " '11',\n", " 'Fizz',\n", " '13',\n", " '14',\n", " 'FizzBuzz'\n", " ]\n", " self.assertEqual(solution.fizz_buzz(15), expected)\n", " print('Success: test_fizz_buzz')\n", "\n", "\n", "def main():\n", " test = TestFizzBuzz()\n", " test.test_fizz_buzz()\n", "\n", "\n", "if __name__ == '__main__':\n", " main()" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "## Solution Notebook\n", "\n", "Review the [Solution Notebook](http://nbviewer.ipython.org/github/donnemartin/interactive-coding-challenges/blob/master/arrays_strings/fizz_buzz/fizz_buzz_solution.ipynb) for a discussion on algorithms and code solutions." ] } ], "metadata": { "kernelspec": { "display_name": "Python 3", "language": "python", "name": "python3" }, "language_info": { "codemirror_mode": { "name": "ipython", "version": 3 }, "file_extension": ".py", "mimetype": "text/x-python", "name": "python", "nbconvert_exporter": "python", "pygments_lexer": "ipython3", "version": "3.7.2" } }, "nbformat": 4, "nbformat_minor": 1 }