mirror of
https://github.com/donnemartin/interactive-coding-challenges
synced 2026-01-03 07:58:02 +00:00
fixed problems, new pull
This commit is contained in:
wdonahoe
0
sorting_searching/group_ordered/__init__.py
Normal file
0
sorting_searching/group_ordered/__init__.py
Normal file
34
sorting_searching/group_ordered/group_ordered.py
Normal file
34
sorting_searching/group_ordered/group_ordered.py
Normal file
@@ -0,0 +1,34 @@
|
||||
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
|
||||
|
||||
|
||||
def group_ordered2(list_in):
|
||||
from collections import OrderedDict
|
||||
result = OrderedDict()
|
||||
for value in list_in:
|
||||
result.setdefault(value, []).append(value)
|
||||
return result
|
||||
171
sorting_searching/group_ordered/group_ordered_challenge.ipynb
Normal file
171
sorting_searching/group_ordered/group_ordered_challenge.ipynb
Normal file
@@ -0,0 +1,171 @@
|
||||
{
|
||||
"cells": [
|
||||
{
|
||||
"cell_type": "markdown",
|
||||
"metadata": {},
|
||||
"source": [
|
||||
"<small><i>This notebook was prepared by [wdonahoe](https://github.com/wdonahoe). 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\n",
|
||||
"from nose.tools import assert_equal\n",
|
||||
"\n",
|
||||
"\n",
|
||||
"class TestGroupOrdered(object):\n",
|
||||
" def test_group_ordered(self, func):\n",
|
||||
"\n",
|
||||
" assert_equal(func(None), None)\n",
|
||||
" print('Success: ' + func.__name__ + \" None case.\")\n",
|
||||
" assert_equal(func([]), [])\n",
|
||||
" print('Success: ' + func.__name__ + \" Empty case.\")\n",
|
||||
" assert_equal(func([1]), [1])\n",
|
||||
" print('Success: ' + func.__name__ + \" Single element case.\")\n",
|
||||
" assert_equal(func([1, 2, 1, 3, 2]), [1, 1, 2, 2, 3])\n",
|
||||
" assert_equal(func(['a', 'b', 'a']), ['a', 'a', 'b'])\n",
|
||||
" assert_equal(func([1, 1, 2, 3, 4, 5, 2, 1]), [1, 1, 1, 2, 2, 3, 4, 5])\n",
|
||||
" assert_equal(func([1, 2, 3, 4, 3, 4]), [1, 2, 3, 3, 4, 4])\n",
|
||||
" print('Success: ' + func.__name__)\n",
|
||||
"\n",
|
||||
"\n",
|
||||
"def main():\n",
|
||||
" test = TestGroupOrdered()\n",
|
||||
" test.test_group_ordered(group_ordered)\n",
|
||||
" try:\n",
|
||||
" test.test_group_ordered(group_ordered_alt)\n",
|
||||
" except NameError:\n",
|
||||
" # Alternate solutions are only defined\n",
|
||||
" # in the solutions file\n",
|
||||
" pass\n",
|
||||
"\n",
|
||||
"if __name__ == '__main__':\n",
|
||||
" main()\n"
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "markdown",
|
||||
"metadata": {},
|
||||
"source": [
|
||||
"## Solution Notebook\n",
|
||||
"\n",
|
||||
"Review the [solution notebook](https://github.com/donnemartin/interactive-coding-challenges/sorting_searching/group_ordered/group_ordered_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
|
||||
}
|
||||
262
sorting_searching/group_ordered/group_ordered_solution.ipynb
Normal file
262
sorting_searching/group_ordered/group_ordered_solution.ipynb
Normal file
@@ -0,0 +1,262 @@
|
||||
{
|
||||
"cells": [
|
||||
{
|
||||
"cell_type": "markdown",
|
||||
"metadata": {},
|
||||
"source": [
|
||||
"<small><i>This notebook was prepared by [wdonahoe](https://github.com/wdonahoe). 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 a function that groups identical items based on their order in the list.\n",
|
||||
"\n",
|
||||
"* [Constraints](#Constraints)\n",
|
||||
"* [Test Cases](#Test-Cases)\n",
|
||||
"* [Algorithm: Modified Selection Sort](#Algorithm: Modified Selection Sort)\n",
|
||||
"* [Code: Modified Selection Sort](#Code: Modified Selection Sort)\n",
|
||||
"* [Algorithm: Ordered Dict](#Algorithm: Ordered Dict)\n",
|
||||
"* [Code: Ordered Dict](#Code:-Ordered-Dict)\n",
|
||||
"* [Unit Test](#Unit-Test)"
|
||||
]
|
||||
},
|
||||
{
|
||||
"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\n"
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "markdown",
|
||||
"metadata": {},
|
||||
"source": [
|
||||
"## Algorithm: Modified Selection Sort\n",
|
||||
"\n",
|
||||
"* Save the relative position of the first-occurence of each item in a list.\n",
|
||||
"* Iterate through list of unique items.\n",
|
||||
" * Keep an outer index; scan rest of list, swapping matching items with outer index and incrementing outer index each time. \n",
|
||||
" \n",
|
||||
"Complexity:\n",
|
||||
"* Time: O(n^2)\n",
|
||||
"* Space: O(n)"
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "markdown",
|
||||
"metadata": {},
|
||||
"source": [
|
||||
"# Code: Modified Selection Sort"
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "code",
|
||||
"execution_count": 2,
|
||||
"metadata": {
|
||||
"collapsed": false
|
||||
},
|
||||
"outputs": [],
|
||||
"source": [
|
||||
"def make_order_list(list_in):\n",
|
||||
" order_list = []\n",
|
||||
" for item in list_in:\n",
|
||||
" if item not in order_list:\n",
|
||||
" order_list.append(item)\n",
|
||||
" return order_list\n",
|
||||
"\n",
|
||||
"\n",
|
||||
"def group_ordered(list_in):\n",
|
||||
" if list_in is None:\n",
|
||||
" return None\n",
|
||||
" order_list = make_order_list(list_in)\n",
|
||||
" current = 0\n",
|
||||
" for item in order_list:\n",
|
||||
" search = current + 1\n",
|
||||
" while True:\n",
|
||||
" try:\n",
|
||||
" if list_in[search] != item:\n",
|
||||
" search += 1\n",
|
||||
" else:\n",
|
||||
" current += 1\n",
|
||||
" list_in[current], list_in[search] = list_in[search], list_in[current]\n",
|
||||
" search += 1\n",
|
||||
" except IndexError:\n",
|
||||
" break\n",
|
||||
" return list_in"
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "markdown",
|
||||
"metadata": {},
|
||||
"source": [
|
||||
"## Algorithm: Ordered Dict.\n",
|
||||
"\n",
|
||||
"* Use an ordered dict to track insertion order of each key\n",
|
||||
"* Flatten list of values.\n",
|
||||
"\n",
|
||||
"Complexity:\n",
|
||||
"\n",
|
||||
"* Time: O(n)\n",
|
||||
"* Space: O(n)"
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "markdown",
|
||||
"metadata": {},
|
||||
"source": [
|
||||
"## Code: Ordered Dict"
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "code",
|
||||
"execution_count": 3,
|
||||
"metadata": {
|
||||
"collapsed": true
|
||||
},
|
||||
"outputs": [],
|
||||
"source": [
|
||||
"from collections import OrderedDict\n",
|
||||
"\n",
|
||||
"def group_ordered_alt(list_in):\n",
|
||||
" if list_in is None:\n",
|
||||
" return None\n",
|
||||
" result = OrderedDict()\n",
|
||||
" for value in list_in:\n",
|
||||
" result.setdefault(value, []).append(value)\n",
|
||||
" return [v for group in result.values() for v in group]"
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "markdown",
|
||||
"metadata": {},
|
||||
"source": [
|
||||
"## Unit Test\n",
|
||||
"\n",
|
||||
"#### The following unit test is expected to fail until you solve the challenge."
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "code",
|
||||
"execution_count": 4,
|
||||
"metadata": {
|
||||
"collapsed": false
|
||||
},
|
||||
"outputs": [
|
||||
{
|
||||
"name": "stdout",
|
||||
"output_type": "stream",
|
||||
"text": [
|
||||
"Overwriting test_group_ordered.py\n"
|
||||
]
|
||||
}
|
||||
],
|
||||
"source": [
|
||||
"%%writefile test_group_ordered.py\n",
|
||||
"from nose.tools import assert_equal\n",
|
||||
"\n",
|
||||
"\n",
|
||||
"class TestGroupOrdered(object):\n",
|
||||
" def test_group_ordered(self, func):\n",
|
||||
"\n",
|
||||
" assert_equal(func(None), None)\n",
|
||||
" print('Success: ' + func.__name__ + \" None case.\")\n",
|
||||
" assert_equal(func([]), [])\n",
|
||||
" print('Success: ' + func.__name__ + \" Empty case.\")\n",
|
||||
" assert_equal(func([1]), [1])\n",
|
||||
" print('Success: ' + func.__name__ + \" Single element case.\")\n",
|
||||
" assert_equal(func([1, 2, 1, 3, 2]), [1, 1, 2, 2, 3])\n",
|
||||
" assert_equal(func(['a', 'b', 'a']), ['a', 'a', 'b'])\n",
|
||||
" assert_equal(func([1, 1, 2, 3, 4, 5, 2, 1]), [1, 1, 1, 2, 2, 3, 4, 5])\n",
|
||||
" assert_equal(func([1, 2, 3, 4, 3, 4]), [1, 2, 3, 3, 4, 4])\n",
|
||||
" print('Success: ' + func.__name__)\n",
|
||||
"\n",
|
||||
"\n",
|
||||
"def main():\n",
|
||||
" test = TestGroupOrdered()\n",
|
||||
" test.test_group_ordered(group_ordered)\n",
|
||||
" try:\n",
|
||||
" test.test_group_ordered(group_ordered_alt)\n",
|
||||
" except NameError:\n",
|
||||
" # Alternate solutions are only defined\n",
|
||||
" # in the solutions file\n",
|
||||
" pass\n",
|
||||
"\n",
|
||||
"if __name__ == '__main__':\n",
|
||||
" main()"
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "code",
|
||||
"execution_count": 5,
|
||||
"metadata": {
|
||||
"collapsed": false
|
||||
},
|
||||
"outputs": [
|
||||
{
|
||||
"name": "stdout",
|
||||
"output_type": "stream",
|
||||
"text": [
|
||||
"Success: group_ordered None case.\n",
|
||||
"Success: group_ordered Empty case.\n",
|
||||
"Success: group_ordered Single element case.\n",
|
||||
"Success: group_ordered\n",
|
||||
"Success: group_ordered_alt None case.\n",
|
||||
"Success: group_ordered_alt Empty case.\n",
|
||||
"Success: group_ordered_alt Single element case.\n",
|
||||
"Success: group_ordered_alt\n"
|
||||
]
|
||||
}
|
||||
],
|
||||
"source": [
|
||||
"%run -i test_group_ordered.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": "2.7.6"
|
||||
}
|
||||
},
|
||||
"nbformat": 4,
|
||||
"nbformat_minor": 0
|
||||
}
|
||||
31
sorting_searching/group_ordered/test_group_ordered.py
Normal file
31
sorting_searching/group_ordered/test_group_ordered.py
Normal file
@@ -0,0 +1,31 @@
|
||||
from nose.tools import assert_equal
|
||||
|
||||
|
||||
class TestGroupOrdered(object):
|
||||
def test_group_ordered(self, func):
|
||||
|
||||
assert_equal(func(None), None)
|
||||
print('Success: ' + func.__name__ + " None case.")
|
||||
assert_equal(func([]), [])
|
||||
print('Success: ' + func.__name__ + " Empty case.")
|
||||
assert_equal(func([1]), [1])
|
||||
print('Success: ' + func.__name__ + " Single element case.")
|
||||
assert_equal(func([1, 2, 1, 3, 2]), [1, 1, 2, 2, 3])
|
||||
assert_equal(func(['a', 'b', 'a']), ['a', 'a', 'b'])
|
||||
assert_equal(func([1, 1, 2, 3, 4, 5, 2, 1]), [1, 1, 1, 2, 2, 3, 4, 5])
|
||||
assert_equal(func([1, 2, 3, 4, 3, 4]), [1, 2, 3, 3, 4, 4])
|
||||
print('Success: ' + func.__name__)
|
||||
|
||||
|
||||
def main():
|
||||
test = TestGroupOrdered()
|
||||
test.test_group_ordered(group_ordered)
|
||||
try:
|
||||
test.test_group_ordered(group_ordered_alt)
|
||||
except NameError:
|
||||
# Alternate solutions are only defined
|
||||
# in the solutions file
|
||||
pass
|
||||
|
||||
if __name__ == '__main__':
|
||||
main()
|
||||
@@ -33,7 +33,6 @@
|
||||
"source": [
|
||||
"## Constraints\n",
|
||||
"\n",
|
||||
|
||||
"* Is a naiive solution sufficient?\n",
|
||||
" * Yes"
|
||||
]
|
||||
@@ -152,7 +151,7 @@
|
||||
},
|
||||
{
|
||||
"cell_type": "code",
|
||||
"execution_count": 3,
|
||||
"execution_count": 1,
|
||||
"metadata": {
|
||||
"collapsed": false
|
||||
},
|
||||
@@ -161,16 +160,34 @@
|
||||
"name": "stdout",
|
||||
"output_type": "stream",
|
||||
"text": [
|
||||
"Empty input\n",
|
||||
"One element\n",
|
||||
"Two or more elements\n",
|
||||
"Success: test_insertion_sort\n"
|
||||
"Empty input\n"
|
||||
]
|
||||
},
|
||||
{
|
||||
"ename": "NameError",
|
||||
"evalue": "global name 'insertion_sort' is not defined",
|
||||
"output_type": "error",
|
||||
"traceback": [
|
||||
"\u001b[1;31m---------------------------------------------------------------------------\u001b[0m",
|
||||
"\u001b[1;31mNameError\u001b[0m Traceback (most recent call last)",
|
||||
"\u001b[1;32m/home/wdonahoe/Documents/interactive-coding-challenges/sorting_searching/insertion_sort/test_insertion_sort.py\u001b[0m in \u001b[0;36m<module>\u001b[1;34m()\u001b[0m\n\u001b[0;32m 24\u001b[0m \u001b[1;32mif\u001b[0m \u001b[0m__name__\u001b[0m \u001b[1;33m==\u001b[0m \u001b[1;34m'__main__'\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 25\u001b[0m \u001b[0mtest\u001b[0m \u001b[1;33m=\u001b[0m \u001b[0mTestInsertionSort\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m---> 26\u001b[1;33m \u001b[0mtest\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mtest_insertion_sort\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m",
|
||||
"\u001b[1;32m/home/wdonahoe/Documents/interactive-coding-challenges/sorting_searching/insertion_sort/test_insertion_sort.py\u001b[0m in \u001b[0;36mtest_insertion_sort\u001b[1;34m(self)\u001b[0m\n\u001b[0;32m 7\u001b[0m \u001b[1;32mprint\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;34m'Empty input'\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 8\u001b[0m \u001b[0mdata\u001b[0m \u001b[1;33m=\u001b[0m \u001b[1;33m[\u001b[0m\u001b[1;33m]\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m----> 9\u001b[1;33m \u001b[0minsertion_sort\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mdata\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m 10\u001b[0m \u001b[0massert_equal\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mdata\u001b[0m\u001b[1;33m,\u001b[0m \u001b[1;33m[\u001b[0m\u001b[1;33m]\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 11\u001b[0m \u001b[1;33m\u001b[0m\u001b[0m\n",
|
||||
"\u001b[1;31mNameError\u001b[0m: global name 'insertion_sort' is not defined"
|
||||
]
|
||||
}
|
||||
],
|
||||
"source": [
|
||||
"%run -i test_insertion_sort.py"
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "code",
|
||||
"execution_count": null,
|
||||
"metadata": {
|
||||
"collapsed": true
|
||||
},
|
||||
"outputs": [],
|
||||
"source": []
|
||||
}
|
||||
],
|
||||
"metadata": {
|
||||
@@ -189,7 +206,7 @@
|
||||
"name": "python",
|
||||
"nbconvert_exporter": "python",
|
||||
"pygments_lexer": "ipython2",
|
||||
"version": "2.7.10"
|
||||
"version": "2.7.6"
|
||||
}
|
||||
},
|
||||
"nbformat": 4,
|
||||
|
||||
@@ -34,7 +34,6 @@
|
||||
"source": [
|
||||
"## Constraints\n",
|
||||
"\n",
|
||||
|
||||
"* Is a naiive solution sufficient?\n",
|
||||
" * Yes"
|
||||
]
|
||||
@@ -68,15 +67,25 @@
|
||||
},
|
||||
{
|
||||
"cell_type": "code",
|
||||
"execution_count": null,
|
||||
"execution_count": 4,
|
||||
"metadata": {
|
||||
"collapsed": false
|
||||
},
|
||||
"outputs": [],
|
||||
"source": [
|
||||
"def insert(l,item_pos):\n",
|
||||
" item = l[item_pos]\n",
|
||||
" while item_pos > 0:\n",
|
||||
" if l[item_pos - 1] > item:\n",
|
||||
" l[item_pos - 1], l[item_pos] = l[item_pos], l[item_pos - 1]\n",
|
||||
" item_pos -= 1\n",
|
||||
" else:\n",
|
||||
" break\n",
|
||||
"\n",
|
||||
"def insertion_sort(data):\n",
|
||||
" # TODO: Implement me\n",
|
||||
" pass"
|
||||
" for i,item in enumerate(data):\n",
|
||||
" insert(data,i)\n",
|
||||
" return data"
|
||||
]
|
||||
},
|
||||
{
|
||||
@@ -92,11 +101,22 @@
|
||||
},
|
||||
{
|
||||
"cell_type": "code",
|
||||
"execution_count": null,
|
||||
"execution_count": 5,
|
||||
"metadata": {
|
||||
"collapsed": false
|
||||
},
|
||||
"outputs": [],
|
||||
"outputs": [
|
||||
{
|
||||
"name": "stdout",
|
||||
"output_type": "stream",
|
||||
"text": [
|
||||
"Empty input\n",
|
||||
"One element\n",
|
||||
"Two or more elements\n",
|
||||
"Success: test_insertion_sort\n"
|
||||
]
|
||||
}
|
||||
],
|
||||
"source": [
|
||||
"# %load test_insertion_sort.py\n",
|
||||
"from nose.tools import assert_equal\n",
|
||||
@@ -153,7 +173,7 @@
|
||||
"name": "python",
|
||||
"nbconvert_exporter": "python",
|
||||
"pygments_lexer": "ipython2",
|
||||
"version": "2.7.10"
|
||||
"version": "2.7.6"
|
||||
}
|
||||
},
|
||||
"nbformat": 4,
|
||||
Reference in New Issue
Block a user