mirror of
https://github.com/donnemartin/interactive-coding-challenges.git
synced 2024-03-22 13:11:13 +08:00
edited challenge notebook and added tests
This commit is contained in:
wdonahoe
parent
d1c11a2592
commit
8c23acd55a
0
arrays_strings/group_items/__init__.py
Normal file
0
arrays_strings/group_items/__init__.py
Normal file
158
arrays_strings/group_items/group_items_challenge.ipynb
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158
arrays_strings/group_items/group_items_challenge.ipynb
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@ -0,0 +1,158 @@
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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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"<small><i>This notebook was prepared by [Author](https://github.com/). Source and license info is on [GitHub](https://github.com/donnemartin/interactive-coding-challenges).</i></small>"
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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 a function that groups identical items based on their order in the list.\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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"* Can we use extra data structures?\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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"* group_ordered([1,2,1,3,2]) -> [1,1,2,2,3]\n",
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"* group_ordered(['a','b','a') -> ['a','a','b']\n",
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"* group_ordered([1,1,2,3,4,5,2,1]-> [1,1,1,2,2,3,4,5]\n",
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"* group_ordered([1,2,3,4,3,4]) -> [1,2,3,3,4,4]\n",
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"* group_ordered([]) -> []\n",
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"* group_ordered([1]) -> [1]\n",
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"* group_ordered(None) -> None"
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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](https://github.com/donnemartin/interactive-coding-challenges/templates/foo_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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"def group_ordered(list_in):\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_group_ordered.py\n",
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"from nose.tools import assert_equal\n",
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"\n",
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"\n",
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"class TestFoo(object):\n",
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"\n",
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" def test_foo(self):\n",
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" assert_equal(foo(None), None)\n",
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" assert_equal(foo(0), 0)\n",
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" assert_equal(foo('bar'), 'bar')\n",
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" print('Success: test_foo')\n",
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"\n",
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"def main():\n",
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" test = TestFoo()\n",
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" test.test_foo()\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](https://github.com/donnemartin/interactive-coding-challenges/templates/foo_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 2",
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"language": "python",
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"name": "python2"
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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": 2
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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": "ipython2",
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"version": "2.7.6"
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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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26
arrays_strings/group_items/group_ordered.py
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26
arrays_strings/group_items/group_ordered.py
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@ -0,0 +1,26 @@
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def make_order_list(list_in):
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order_list = []
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for item in list_in:
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if item not in order_list:
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order_list.append(item)
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return order_list
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def group_ordered(list_in):
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if list_in is None:
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return None
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order_list = make_order_list(list_in)
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current = 0
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for item in order_list:
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search = current + 1
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while True:
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try:
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if list_in[search] != item:
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search += 1
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else:
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current += 1
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list_in[current], list_in[search] = list_in[search], list_in[current]
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search += 1
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except IndexError:
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break
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return list_in
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140
arrays_strings/group_items/group_ordered_challenge.ipynb
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140
arrays_strings/group_items/group_ordered_challenge.ipynb
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@ -0,0 +1,140 @@
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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": {},
|
||||
"source": [
|
||||
"<small><i>This notebook was prepared by [Author](https://github.com/). Source and license info is on [GitHub](https://github.com/donnemartin/interactive-coding-challenges).</i></small>"
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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 a function that groups identical items based on their order in the list.\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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"* Can we use extra data structures?\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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"* group_ordered([1,2,1,3,2]) -> [1,1,2,2,3]\n",
|
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"* group_ordered(['a','b','a') -> ['a','a','b']\n",
|
||||
"* group_ordered([1,1,2,3,4,5,2,1]-> [1,1,1,2,2,3,4,5]\n",
|
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"* group_ordered([]) -> []\n",
|
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"* group_ordered([1]) -> [1]\n",
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"* group_ordered(None) -> None"
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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",
|
||||
"Refer to the [solution notebook](https://github.com/donnemartin/interactive-coding-challenges/templates/foo_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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"def group_ordered(list_in):\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": [
|
||||
"**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_group_ordered.py"
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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",
|
||||
"Review the [solution notebook](https://github.com/donnemartin/interactive-coding-challenges/templates/foo_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 2",
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"language": "python",
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"name": "python2"
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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": 2
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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": "ipython2",
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"version": "2.7.6"
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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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166
arrays_strings/group_items/group_ordered_solution.ipynb
Normal file
166
arrays_strings/group_items/group_ordered_solution.ipynb
Normal file
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@ -0,0 +1,166 @@
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{
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||||
"cells": [
|
||||
{
|
||||
"cell_type": "markdown",
|
||||
"metadata": {},
|
||||
"source": [
|
||||
"<small><i>This notebook was prepared by [Author](https://github.com/). Source and license info is on [GitHub](https://github.com/donnemartin/interactive-coding-challenges).</i></small>"
|
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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 foo(val), which returns val\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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"* Is it foo or bar?\n",
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" * foo"
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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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"* foo(val) -> val"
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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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"Return the input, val\n",
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" \n",
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"Complexity:\n",
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"* Time: O(1)\n",
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"* Space: O(1)"
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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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||||
},
|
||||
"outputs": [],
|
||||
"source": [
|
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"def foo(val):\n",
|
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" return val"
|
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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": [
|
||||
"## Unit Test"
|
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]
|
||||
},
|
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{
|
||||
"cell_type": "code",
|
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"execution_count": 2,
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||||
"metadata": {
|
||||
"collapsed": false
|
||||
},
|
||||
"outputs": [
|
||||
{
|
||||
"name": "stdout",
|
||||
"output_type": "stream",
|
||||
"text": [
|
||||
"Overwriting test_foo.py\n"
|
||||
]
|
||||
}
|
||||
],
|
||||
"source": [
|
||||
"%%writefile test_foo.py\n",
|
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"from nose.tools import assert_equal\n",
|
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"\n",
|
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"\n",
|
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"class TestFoo(object):\n",
|
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"\n",
|
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" def test_foo(self):\n",
|
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" assert_equal(foo(None), None)\n",
|
||||
" assert_equal(foo(0), 0)\n",
|
||||
" assert_equal(foo('bar'), 'bar')\n",
|
||||
" print('Success: test_foo')\n",
|
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"\n",
|
||||
"def main():\n",
|
||||
" test = TestFoo()\n",
|
||||
" test.test_foo()\n",
|
||||
"\n",
|
||||
"if __name__ == '__main__':\n",
|
||||
" main()"
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "code",
|
||||
"execution_count": 3,
|
||||
"metadata": {
|
||||
"collapsed": false
|
||||
},
|
||||
"outputs": [
|
||||
{
|
||||
"name": "stdout",
|
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"output_type": "stream",
|
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"text": [
|
||||
"Success: test_foo\n"
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||||
]
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}
|
||||
],
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"source": [
|
||||
"%run -i test_foo.py"
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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 2",
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"language": "python",
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"name": "python2"
|
||||
},
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"language_info": {
|
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"codemirror_mode": {
|
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"name": "ipython",
|
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"version": 2
|
||||
},
|
||||
"file_extension": ".py",
|
||||
"mimetype": "text/x-python",
|
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"name": "python",
|
||||
"nbconvert_exporter": "python",
|
||||
"pygments_lexer": "ipython2",
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||||
"version": "2.7.10"
|
||||
}
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},
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"nbformat": 4,
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"nbformat_minor": 0
|
||||
}
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20
arrays_strings/group_items/test_group_ordered.py
Normal file
20
arrays_strings/group_items/test_group_ordered.py
Normal file
|
|
@ -0,0 +1,20 @@
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from nose.tools import assert_equal
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||||
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class TestFoo(object):
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def test_foo(self):
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assert_equal(group_ordered(None), None)
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assert_equal(group_ordered([]), [])
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||||
assert_equal(group_ordered([1]), [1])
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assert_equal(group_ordered([1,2,1,3,2]),[1,1,2,2,3])
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assert_equal(group_ordered(['a','b','a']),['a','a','b'])
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assert_equal(group_ordered([1,1,2,3,4,5,2,1]),[1,1,1,2,2,3,4,5])
|
||||
assert_equal(group_ordered([1,2,3,4,3,4]),[1,2,3,3,4,4])
|
||||
print('Success: test_foo')
|
||||
|
||||
def main():
|
||||
test = TestFoo()
|
||||
test.test_foo()
|
||||
|
||||
if __name__ == '__main__':
|
||||
main()
|
||||
Loading…
Reference in New Issue
Block a user