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https://github.com/donnemartin/interactive-coding-challenges.git
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Add fizz buzz challenge (#149)
This commit is contained in:
Donne Martin
GitHub
parent
5acef100a9
commit
eba98452e3
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@ -123,6 +123,7 @@ Challenges, solutions, and unit tests are presented in the form of **IPython/Jup
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| Compress a string | [Challenge](http://nbviewer.ipython.org/github/donnemartin/interactive-coding-challenges/blob/master/arrays_strings/compress/compress_challenge.ipynb)│[Solution](http://nbviewer.ipython.org/github/donnemartin/interactive-coding-challenges/blob/master/arrays_strings/compress/compress_solution.ipynb) |
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| Reverse characters in a string | [Challenge](http://nbviewer.ipython.org/github/donnemartin/interactive-coding-challenges/blob/master/arrays_strings/reverse_string/reverse_string_challenge.ipynb)│[Solution](http://nbviewer.ipython.org/github/donnemartin/interactive-coding-challenges/blob/master/arrays_strings/reverse_string/reverse_string_solution.ipynb) |
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| Implement a hash table | [Challenge](http://nbviewer.ipython.org/github/donnemartin/interactive-coding-challenges/blob/master/arrays_strings/hash_map/hash_map_challenge.ipynb)│[Solution](http://nbviewer.ipython.org/github/donnemartin/interactive-coding-challenges/blob/master/arrays_strings/hash_map/hash_map_solution.ipynb) |
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| Implement fizz buzz | [Challenge](http://nbviewer.ipython.org/github/donnemartin/interactive-coding-challenges/blob/master/arrays_strings/fizz_buzz/fizz_buzz_challenge.ipynb)│[Solution](http://nbviewer.ipython.org/github/donnemartin/interactive-coding-challenges/blob/master/arrays_strings/fizz_buzz/fizz_buzz_solution.ipynb) |
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| Find the first non-repeated character in a string | [Contribute](https://github.com/donnemartin/interactive-coding-challenges/blob/master/CONTRIBUTING.md)│[Contribute](https://github.com/donnemartin/interactive-coding-challenges/blob/master/CONTRIBUTING.md) |
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| Remove specified characters in a string | [Contribute](https://github.com/donnemartin/interactive-coding-challenges/blob/master/CONTRIBUTING.md)│[Contribute](https://github.com/donnemartin/interactive-coding-challenges/blob/master/CONTRIBUTING.md) |
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| Reverse words in a string | [Contribute](https://github.com/donnemartin/interactive-coding-challenges/blob/master/CONTRIBUTING.md)│[Contribute](https://github.com/donnemartin/interactive-coding-challenges/blob/master/CONTRIBUTING.md) |
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0
arrays_strings/fizz_buzz/__init__.py
Normal file
0
arrays_strings/fizz_buzz/__init__.py
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202
arrays_strings/fizz_buzz/fizz_buzz_challenge.ipynb
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202
arrays_strings/fizz_buzz/fizz_buzz_challenge.ipynb
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@ -0,0 +1,202 @@
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{
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"cells": [
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"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)."
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"# Challenge Notebook"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## Problem: Implement Fizz Buzz.\n",
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"\n",
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"* [Constraints](#Constraints)\n",
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"* [Test Cases](#Test-Cases)\n",
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"* [Algorithm](#Algorithm)\n",
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"* [Code](#Code)\n",
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"* [Unit Test](#Unit-Test)\n",
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"* [Solution Notebook](#Solution-Notebook)"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## Constraints\n",
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"\n",
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"* What is fizz buzz?\n",
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" * Return the string representation of numbers from 1 to n\n",
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" * Multiples of 3 -> 'Fizz'\n",
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" * Multiples of 5 -> 'Buzz'\n",
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" * Multiples of 3 and 5 -> 'FizzBuzz'\n",
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"* Can we assume the inputs are valid?\n",
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" * No\n",
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"* Can we assume this fits memory?\n",
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" * Yes"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## Test Cases\n",
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"\n",
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"<pre>\n",
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"* None -> Exception\n",
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"* < 1 -> Exception\n",
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"* 15 ->\n",
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"[\n",
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" '1',\n",
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" '2',\n",
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" 'Fizz',\n",
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" '4',\n",
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" 'Buzz',\n",
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" 'Fizz',\n",
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" '7',\n",
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" '8',\n",
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" 'Fizz',\n",
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" 'Buzz',\n",
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" '11',\n",
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" 'Fizz',\n",
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" '13',\n",
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" '14',\n",
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" 'FizzBuzz'\n",
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"]\n",
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"</pre>"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## Algorithm\n",
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"\n",
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"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."
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## Code"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"collapsed": false
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},
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"outputs": [],
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"source": [
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"class Solution(object):\n",
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"\n",
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" def fizz_buzz(self, num):\n",
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" # TODO: Implement me\n",
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" pass"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## Unit Test"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"**The following unit test is expected to fail until you solve the challenge.**"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"collapsed": false
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},
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"outputs": [],
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"source": [
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"# %load test_fizz_buzz.py\n",
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"from nose.tools import assert_equal, assert_raises\n",
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"\n",
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"\n",
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"class TestFizzBuzz(object):\n",
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"\n",
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" def test_fizz_buzz(self):\n",
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" solution = Solution()\n",
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" assert_raises(TypeError, solution.fizz_buzz, None)\n",
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" assert_raises(ValueError, solution.fizz_buzz, 0)\n",
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" expected = [\n",
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" '1',\n",
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" '2',\n",
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" 'Fizz',\n",
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" '4',\n",
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" 'Buzz',\n",
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" 'Fizz',\n",
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" '7',\n",
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" '8',\n",
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" 'Fizz',\n",
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" 'Buzz',\n",
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" '11',\n",
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" 'Fizz',\n",
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" '13',\n",
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" '14',\n",
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" 'FizzBuzz'\n",
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" ]\n",
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" assert_equal(solution.fizz_buzz(15), expected)\n",
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" print('Success: test_fizz_buzz')\n",
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"\n",
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"\n",
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"def main():\n",
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" test = TestFizzBuzz()\n",
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" test.test_fizz_buzz()\n",
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"\n",
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"\n",
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"if __name__ == '__main__':\n",
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" main()"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## Solution Notebook\n",
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"\n",
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"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."
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]
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 3",
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"language": "python",
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"name": "python3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.4.3"
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}
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},
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"nbformat": 4,
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"nbformat_minor": 0
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}
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237
arrays_strings/fizz_buzz/fizz_buzz_solution.ipynb
Normal file
237
arrays_strings/fizz_buzz/fizz_buzz_solution.ipynb
Normal file
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@ -0,0 +1,237 @@
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{
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"cells": [
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{
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"cell_type": "markdown",
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"metadata": {},
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||||
"source": [
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||||
"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)."
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"# Solution Notebook"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## Problem: Implement Fizz Buzz.\n",
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"\n",
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"* [Constraints](#Constraints)\n",
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"* [Test Cases](#Test-Cases)\n",
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"* [Algorithm](#Algorithm)\n",
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"* [Code](#Code)\n",
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"* [Unit Test](#Unit-Test)"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## Constraints\n",
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"\n",
|
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"* What is fizz buzz?\n",
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" * Return the string representation of numbers from 1 to n\n",
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" * Multiples of 3 -> 'Fizz'\n",
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" * Multiples of 5 -> 'Buzz'\n",
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" * Multiples of 3 and 5 -> 'FizzBuzz'\n",
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"* Can we assume the inputs are valid?\n",
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" * No\n",
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"* Can we assume this fits memory?\n",
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" * Yes"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## Test Cases\n",
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"\n",
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"<pre>\n",
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"* None -> Exception\n",
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"* < 1 -> Exception\n",
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"* 15 ->\n",
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"[\n",
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" '1',\n",
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" '2',\n",
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" 'Fizz',\n",
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" '4',\n",
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" 'Buzz',\n",
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" 'Fizz',\n",
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" '7',\n",
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" '8',\n",
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" 'Fizz',\n",
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" 'Buzz',\n",
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" '11',\n",
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" 'Fizz',\n",
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" '13',\n",
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" '14',\n",
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" 'FizzBuzz'\n",
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"]\n",
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"</pre>"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## Algorithm\n",
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"\n",
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"There is no fancy algorithm to solve fizz buzz.\n",
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"\n",
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"* Iterate from 1 through n\n",
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"* Use the mod operator to determine if the current iteration is divisible by:\n",
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" * 3 and 5 -> 'FizzBuzz'\n",
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" * 3 -> 'Fizz'\n",
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" * 5 -> 'Buzz'\n",
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" * else -> string of current iteration\n",
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"* return the results\n",
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"\n",
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"Complexity:\n",
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"* Time: O(n)\n",
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"* Space: O(n)"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## Code"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 1,
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"metadata": {
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"collapsed": false
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},
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"outputs": [],
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"source": [
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"class Solution(object):\n",
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"\n",
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" def fizz_buzz(self, num):\n",
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" if num is None:\n",
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" raise TypeError('num cannot be None')\n",
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" if num < 1:\n",
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" raise ValueError('num cannot be less than one')\n",
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" results = []\n",
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" for i in range(1, num + 1):\n",
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" if i % 3 == 0 and i % 5 == 0:\n",
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" results.append('FizzBuzz')\n",
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" elif i % 3 == 0:\n",
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" results.append('Fizz')\n",
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" elif i % 5 == 0:\n",
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" results.append('Buzz')\n",
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" else:\n",
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" results.append(str(i))\n",
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" return results"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## Unit Test"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 2,
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"metadata": {
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"collapsed": false
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},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"Overwriting test_fizz_buzz.py\n"
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]
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}
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],
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"source": [
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"%%writefile test_fizz_buzz.py\n",
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"from nose.tools import assert_equal, assert_raises\n",
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"\n",
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"\n",
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"class TestFizzBuzz(object):\n",
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"\n",
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" def test_fizz_buzz(self):\n",
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" solution = Solution()\n",
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" assert_raises(TypeError, solution.fizz_buzz, None)\n",
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" assert_raises(ValueError, solution.fizz_buzz, 0)\n",
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" expected = [\n",
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" '1',\n",
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" '2',\n",
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" 'Fizz',\n",
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" '4',\n",
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" 'Buzz',\n",
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" 'Fizz',\n",
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" '7',\n",
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" '8',\n",
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" 'Fizz',\n",
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" 'Buzz',\n",
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" '11',\n",
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" 'Fizz',\n",
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" '13',\n",
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" '14',\n",
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" 'FizzBuzz'\n",
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" ]\n",
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" assert_equal(solution.fizz_buzz(15), expected)\n",
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" print('Success: test_fizz_buzz')\n",
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"\n",
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"\n",
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"def main():\n",
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" test = TestFizzBuzz()\n",
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" test.test_fizz_buzz()\n",
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"\n",
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"\n",
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"if __name__ == '__main__':\n",
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" main()"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 3,
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"metadata": {
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"collapsed": false
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},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"Success: test_fizz_buzz\n"
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]
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}
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],
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"source": [
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"%run -i test_fizz_buzz.py"
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]
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 3",
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"language": "python",
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"name": "python3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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||||
"pygments_lexer": "ipython3",
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||||
"version": "3.4.3"
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||||
}
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},
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"nbformat": 4,
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"nbformat_minor": 0
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}
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37
arrays_strings/fizz_buzz/test_fizz_buzz.py
Normal file
37
arrays_strings/fizz_buzz/test_fizz_buzz.py
Normal file
|
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@ -0,0 +1,37 @@
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from nose.tools import assert_equal, assert_raises
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class TestFizzBuzz(object):
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def test_fizz_buzz(self):
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solution = Solution()
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assert_raises(TypeError, solution.fizz_buzz, None)
|
||||
assert_raises(ValueError, solution.fizz_buzz, 0)
|
||||
expected = [
|
||||
'1',
|
||||
'2',
|
||||
'Fizz',
|
||||
'4',
|
||||
'Buzz',
|
||||
'Fizz',
|
||||
'7',
|
||||
'8',
|
||||
'Fizz',
|
||||
'Buzz',
|
||||
'11',
|
||||
'Fizz',
|
||||
'13',
|
||||
'14',
|
||||
'FizzBuzz'
|
||||
]
|
||||
assert_equal(solution.fizz_buzz(15), expected)
|
||||
print('Success: test_fizz_buzz')
|
||||
|
||||
|
||||
def main():
|
||||
test = TestFizzBuzz()
|
||||
test.test_fizz_buzz()
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
main()
|
||||
Loading…
Reference in New Issue
Block a user