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
Normal file
158
arrays_strings/group_items/group_items_challenge.ipynb
Normal file
|
|
@ -0,0 +1,158 @@
|
||||||
|
{
|
||||||
|
"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>"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "markdown",
|
||||||
|
"metadata": {},
|
||||||
|
"source": [
|
||||||
|
"# Challenge Notebook"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "markdown",
|
||||||
|
"metadata": {},
|
||||||
|
"source": [
|
||||||
|
"## Problem: Implement a function that groups identical items based on their order in the list.\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",
|
||||||
|
"* Can we use extra data structures?\n",
|
||||||
|
" * Yes"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "markdown",
|
||||||
|
"metadata": {},
|
||||||
|
"source": [
|
||||||
|
"## Test Cases\n",
|
||||||
|
"\n",
|
||||||
|
"* group_ordered([1,2,1,3,2]) -> [1,1,2,2,3]\n",
|
||||||
|
"* 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",
|
||||||
|
"* group_ordered([1,2,3,4,3,4]) -> [1,2,3,3,4,4]\n",
|
||||||
|
"* group_ordered([]) -> []\n",
|
||||||
|
"* group_ordered([1]) -> [1]\n",
|
||||||
|
"* group_ordered(None) -> None"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "markdown",
|
||||||
|
"metadata": {},
|
||||||
|
"source": [
|
||||||
|
"## Algorithm\n",
|
||||||
|
"\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."
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "markdown",
|
||||||
|
"metadata": {},
|
||||||
|
"source": [
|
||||||
|
"## Code"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "code",
|
||||||
|
"execution_count": null,
|
||||||
|
"metadata": {
|
||||||
|
"collapsed": false
|
||||||
|
},
|
||||||
|
"outputs": [],
|
||||||
|
"source": [
|
||||||
|
"def group_ordered(list_in):\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": {
|
||||||
|
"collapsed": false
|
||||||
|
},
|
||||||
|
"outputs": [],
|
||||||
|
"source": [
|
||||||
|
"# %load test_group_ordered.py\n",
|
||||||
|
"from nose.tools import assert_equal\n",
|
||||||
|
"\n",
|
||||||
|
"\n",
|
||||||
|
"class TestFoo(object):\n",
|
||||||
|
"\n",
|
||||||
|
" def test_foo(self):\n",
|
||||||
|
" assert_equal(foo(None), None)\n",
|
||||||
|
" assert_equal(foo(0), 0)\n",
|
||||||
|
" assert_equal(foo('bar'), 'bar')\n",
|
||||||
|
" print('Success: test_foo')\n",
|
||||||
|
"\n",
|
||||||
|
"def main():\n",
|
||||||
|
" test = TestFoo()\n",
|
||||||
|
" test.test_foo()\n",
|
||||||
|
"\n",
|
||||||
|
"if __name__ == '__main__':\n",
|
||||||
|
" main()"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "markdown",
|
||||||
|
"metadata": {},
|
||||||
|
"source": [
|
||||||
|
"## Solution Notebook\n",
|
||||||
|
"\n",
|
||||||
|
"Review the [solution notebook](https://github.com/donnemartin/interactive-coding-challenges/templates/foo_solution.ipynb) for a discussion on algorithms and code solutions."
|
||||||
|
]
|
||||||
|
}
|
||||||
|
],
|
||||||
|
"metadata": {
|
||||||
|
"kernelspec": {
|
||||||
|
"display_name": "Python 2",
|
||||||
|
"language": "python",
|
||||||
|
"name": "python2"
|
||||||
|
},
|
||||||
|
"language_info": {
|
||||||
|
"codemirror_mode": {
|
||||||
|
"name": "ipython",
|
||||||
|
"version": 2
|
||||||
|
},
|
||||||
|
"file_extension": ".py",
|
||||||
|
"mimetype": "text/x-python",
|
||||||
|
"name": "python",
|
||||||
|
"nbconvert_exporter": "python",
|
||||||
|
"pygments_lexer": "ipython2",
|
||||||
|
"version": "2.7.6"
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"nbformat": 4,
|
||||||
|
"nbformat_minor": 0
|
||||||
|
}
|
||||||
26
arrays_strings/group_items/group_ordered.py
Normal file
26
arrays_strings/group_items/group_ordered.py
Normal file
|
|
@ -0,0 +1,26 @@
|
||||||
|
def make_order_list(list_in):
|
||||||
|
order_list = []
|
||||||
|
for item in list_in:
|
||||||
|
if item not in order_list:
|
||||||
|
order_list.append(item)
|
||||||
|
return order_list
|
||||||
|
|
||||||
|
|
||||||
|
def group_ordered(list_in):
|
||||||
|
if list_in is None:
|
||||||
|
return None
|
||||||
|
order_list = make_order_list(list_in)
|
||||||
|
current = 0
|
||||||
|
for item in order_list:
|
||||||
|
search = current + 1
|
||||||
|
while True:
|
||||||
|
try:
|
||||||
|
if list_in[search] != item:
|
||||||
|
search += 1
|
||||||
|
else:
|
||||||
|
current += 1
|
||||||
|
list_in[current], list_in[search] = list_in[search], list_in[current]
|
||||||
|
search += 1
|
||||||
|
except IndexError:
|
||||||
|
break
|
||||||
|
return list_in
|
||||||
140
arrays_strings/group_items/group_ordered_challenge.ipynb
Normal file
140
arrays_strings/group_items/group_ordered_challenge.ipynb
Normal file
|
|
@ -0,0 +1,140 @@
|
||||||
|
{
|
||||||
|
"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>"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "markdown",
|
||||||
|
"metadata": {},
|
||||||
|
"source": [
|
||||||
|
"# Challenge Notebook"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "markdown",
|
||||||
|
"metadata": {},
|
||||||
|
"source": [
|
||||||
|
"## Problem: Implement a function that groups identical items based on their order in the list.\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",
|
||||||
|
"* Can we use extra data structures?\n",
|
||||||
|
" * Yes"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "markdown",
|
||||||
|
"metadata": {},
|
||||||
|
"source": [
|
||||||
|
"## Test Cases\n",
|
||||||
|
"\n",
|
||||||
|
"* group_ordered([1,2,1,3,2]) -> [1,1,2,2,3]\n",
|
||||||
|
"* 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",
|
||||||
|
"* group_ordered([]) -> []\n",
|
||||||
|
"* group_ordered([1]) -> [1]\n",
|
||||||
|
"* group_ordered(None) -> None"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "markdown",
|
||||||
|
"metadata": {},
|
||||||
|
"source": [
|
||||||
|
"## Algorithm\n",
|
||||||
|
"\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."
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "markdown",
|
||||||
|
"metadata": {},
|
||||||
|
"source": [
|
||||||
|
"## Code"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "code",
|
||||||
|
"execution_count": null,
|
||||||
|
"metadata": {
|
||||||
|
"collapsed": false
|
||||||
|
},
|
||||||
|
"outputs": [],
|
||||||
|
"source": [
|
||||||
|
"def group_ordered(list_in):\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": {
|
||||||
|
"collapsed": false
|
||||||
|
},
|
||||||
|
"outputs": [],
|
||||||
|
"source": [
|
||||||
|
"%load test_group_ordered.py"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "markdown",
|
||||||
|
"metadata": {},
|
||||||
|
"source": [
|
||||||
|
"## Solution Notebook\n",
|
||||||
|
"\n",
|
||||||
|
"Review the [solution notebook](https://github.com/donnemartin/interactive-coding-challenges/templates/foo_solution.ipynb) for a discussion on algorithms and code solutions."
|
||||||
|
]
|
||||||
|
}
|
||||||
|
],
|
||||||
|
"metadata": {
|
||||||
|
"kernelspec": {
|
||||||
|
"display_name": "Python 2",
|
||||||
|
"language": "python",
|
||||||
|
"name": "python2"
|
||||||
|
},
|
||||||
|
"language_info": {
|
||||||
|
"codemirror_mode": {
|
||||||
|
"name": "ipython",
|
||||||
|
"version": 2
|
||||||
|
},
|
||||||
|
"file_extension": ".py",
|
||||||
|
"mimetype": "text/x-python",
|
||||||
|
"name": "python",
|
||||||
|
"nbconvert_exporter": "python",
|
||||||
|
"pygments_lexer": "ipython2",
|
||||||
|
"version": "2.7.6"
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"nbformat": 4,
|
||||||
|
"nbformat_minor": 0
|
||||||
|
}
|
||||||
166
arrays_strings/group_items/group_ordered_solution.ipynb
Normal file
166
arrays_strings/group_items/group_ordered_solution.ipynb
Normal file
|
|
@ -0,0 +1,166 @@
|
||||||
|
{
|
||||||
|
"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>"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "markdown",
|
||||||
|
"metadata": {},
|
||||||
|
"source": [
|
||||||
|
"# Solution Notebook"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "markdown",
|
||||||
|
"metadata": {},
|
||||||
|
"source": [
|
||||||
|
"## Problem: Implement foo(val), which returns val\n",
|
||||||
|
"\n",
|
||||||
|
"* [Constraints](#Constraints)\n",
|
||||||
|
"* [Test Cases](#Test-Cases)\n",
|
||||||
|
"* [Algorithm](#Algorithm)\n",
|
||||||
|
"* [Code](#Code)\n",
|
||||||
|
"* [Unit Test](#Unit-Test)"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "markdown",
|
||||||
|
"metadata": {},
|
||||||
|
"source": [
|
||||||
|
"## Constraints\n",
|
||||||
|
"\n",
|
||||||
|
|
||||||
|
"* Is it foo or bar?\n",
|
||||||
|
" * foo"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "markdown",
|
||||||
|
"metadata": {},
|
||||||
|
"source": [
|
||||||
|
"## Test Cases\n",
|
||||||
|
"\n",
|
||||||
|
"* foo(val) -> val"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "markdown",
|
||||||
|
"metadata": {},
|
||||||
|
"source": [
|
||||||
|
"## Algorithm\n",
|
||||||
|
"\n",
|
||||||
|
"Return the input, val\n",
|
||||||
|
" \n",
|
||||||
|
"Complexity:\n",
|
||||||
|
"* Time: O(1)\n",
|
||||||
|
"* Space: O(1)"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "markdown",
|
||||||
|
"metadata": {},
|
||||||
|
"source": [
|
||||||
|
"## Code"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "code",
|
||||||
|
"execution_count": 1,
|
||||||
|
"metadata": {
|
||||||
|
"collapsed": false
|
||||||
|
},
|
||||||
|
"outputs": [],
|
||||||
|
"source": [
|
||||||
|
"def foo(val):\n",
|
||||||
|
" return val"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "markdown",
|
||||||
|
"metadata": {},
|
||||||
|
"source": [
|
||||||
|
"## Unit Test"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "code",
|
||||||
|
"execution_count": 2,
|
||||||
|
"metadata": {
|
||||||
|
"collapsed": false
|
||||||
|
},
|
||||||
|
"outputs": [
|
||||||
|
{
|
||||||
|
"name": "stdout",
|
||||||
|
"output_type": "stream",
|
||||||
|
"text": [
|
||||||
|
"Overwriting test_foo.py\n"
|
||||||
|
]
|
||||||
|
}
|
||||||
|
],
|
||||||
|
"source": [
|
||||||
|
"%%writefile test_foo.py\n",
|
||||||
|
"from nose.tools import assert_equal\n",
|
||||||
|
"\n",
|
||||||
|
"\n",
|
||||||
|
"class TestFoo(object):\n",
|
||||||
|
"\n",
|
||||||
|
" def test_foo(self):\n",
|
||||||
|
" assert_equal(foo(None), None)\n",
|
||||||
|
" assert_equal(foo(0), 0)\n",
|
||||||
|
" assert_equal(foo('bar'), 'bar')\n",
|
||||||
|
" print('Success: test_foo')\n",
|
||||||
|
"\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",
|
||||||
|
"output_type": "stream",
|
||||||
|
"text": [
|
||||||
|
"Success: test_foo\n"
|
||||||
|
]
|
||||||
|
}
|
||||||
|
],
|
||||||
|
"source": [
|
||||||
|
"%run -i test_foo.py"
|
||||||
|
]
|
||||||
|
}
|
||||||
|
],
|
||||||
|
"metadata": {
|
||||||
|
"kernelspec": {
|
||||||
|
"display_name": "Python 2",
|
||||||
|
"language": "python",
|
||||||
|
"name": "python2"
|
||||||
|
},
|
||||||
|
"language_info": {
|
||||||
|
"codemirror_mode": {
|
||||||
|
"name": "ipython",
|
||||||
|
"version": 2
|
||||||
|
},
|
||||||
|
"file_extension": ".py",
|
||||||
|
"mimetype": "text/x-python",
|
||||||
|
"name": "python",
|
||||||
|
"nbconvert_exporter": "python",
|
||||||
|
"pygments_lexer": "ipython2",
|
||||||
|
"version": "2.7.10"
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"nbformat": 4,
|
||||||
|
"nbformat_minor": 0
|
||||||
|
}
|
||||||
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 @@
|
||||||
|
from nose.tools import assert_equal
|
||||||
|
|
||||||
|
class TestFoo(object):
|
||||||
|
|
||||||
|
def test_foo(self):
|
||||||
|
assert_equal(group_ordered(None), None)
|
||||||
|
assert_equal(group_ordered([]), [])
|
||||||
|
assert_equal(group_ordered([1]), [1])
|
||||||
|
assert_equal(group_ordered([1,2,1,3,2]),[1,1,2,2,3])
|
||||||
|
assert_equal(group_ordered(['a','b','a']),['a','a','b'])
|
||||||
|
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