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adding robot.md to the repository #22

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adding robot.md to the repository #22

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69f6a64
adding robot.md to the repository
joaopbe Dec 10, 2019
b653a87
Adding solutions to Python challenges
joaopbe Dec 13, 2019
0e19cab
adding captures for the Statistics Lab
joaopbe Dec 19, 2019
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163 changes: 141 additions & 22 deletions 1.-Python/1.-Snail-and-Well/snail-and-well.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -30,10 +30,15 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 1,
"metadata": {},
"outputs": [],
"source": []
"source": [
"well_height=125\n",
"daily_distance=30\n",
"nightly_distance=20\n",
"snail_position=0"
]
},
{
"cell_type": "markdown",
Expand All @@ -44,10 +49,12 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 2,
"metadata": {},
"outputs": [],
"source": []
"source": [
"days=0 #snail starts at the bottom on day 0"
]
},
{
"cell_type": "markdown",
Expand All @@ -58,10 +65,18 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 3,
"metadata": {},
"outputs": [],
"source": []
"source": [
"while snail_position<well_height:\n",
" days+=1 # another day passes...\n",
" snail_position+=daily_distance #distance walked during the day\n",
" if snail_position<well_height: #if after walking daily distance it´s still in the well...\n",
" snail_position-=nightly_distance #subtract nightly drop\n",
" else: #means that it reached the top during that day\n",
" break"
]
},
{
"cell_type": "markdown",
Expand All @@ -72,10 +87,20 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 4,
"metadata": {},
"outputs": [],
"source": []
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"The snail takes 11 days to escape the well\n"
]
}
],
"source": [
"print('The snail takes {} days to escape the well'.format(days))"
]
},
{
"cell_type": "markdown",
Expand All @@ -96,10 +121,34 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 5,
"metadata": {},
"outputs": [],
"source": []
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"The snail takes 5 days to escape the well\n"
]
}
],
"source": [
"days=0 #snail starts at the bottom on day 0\n",
"snail_position=0\n",
"advance_cm = [30, 21, 33, 77, 44, 45, 23, 45, 12, 34, 55]\n",
"i=0\n",
"\n",
"while snail_position<well_height:\n",
" days+=1 # another day passes...\n",
" snail_position+=advance_cm[i]#distance walked during the day\n",
" i+=1 #increment distance list\n",
" if snail_position<well_height: #if after walking daily distance it´s still in the well...\n",
" snail_position-=nightly_distance #subtract nightly drop\n",
" else: #means that it reached the top during that day\n",
" break\n",
" \n",
"print('The snail takes {} days to escape the well'.format(days))"
]
},
{
"cell_type": "markdown",
Expand All @@ -111,10 +160,37 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 6,
"metadata": {},
"outputs": [],
"source": []
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"The maximum displacement is 57 cm and the minimum displacement is 1 cm.\n"
]
}
],
"source": [
"days=0 #snail starts at the bottom on day 0\n",
"snail_position=0\n",
"advance_cm = [30, 21, 33, 77, 44, 45, 23, 45, 12, 34, 55]\n",
"i=0\n",
"displacement=[]\n",
"\n",
"while snail_position<well_height:\n",
" days+=1 # another day passes...\n",
" snail_position+=advance_cm[i]#distance walked during the day\n",
" if snail_position<well_height: #if after walking daily distance it´s still in the well...\n",
" snail_position-=nightly_distance #subtract nightly drop\n",
" else: #means that it reached the top during that day\n",
" displacement.append(advance_cm[i]) # in this situation there is no nightly distance to subtract since the snail escaped\n",
" break\n",
" displacement.append(advance_cm[i]-nightly_distance)\n",
" i+=1 #increment distance list\n",
" \n",
"print('The maximum displacement is {} cm and the minimum displacement is {} cm.'.format(max(displacement),min(displacement)))"
]
},
{
"cell_type": "markdown",
Expand All @@ -125,10 +201,20 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 7,
"metadata": {},
"outputs": [],
"source": []
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"The average progress is 25.0 cm\n"
]
}
],
"source": [
"print ('The average progress is {} cm'.format(sum(displacement)/len(displacement))) "
]
},
{
"cell_type": "markdown",
Expand All @@ -139,10 +225,43 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 20,
"metadata": {},
"outputs": [],
"source": []
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"The standard deviation (manually calculated) of displacement is 21.587033144922902 cm\n",
"The standard deviation (calculated from statistics library) of displacement is 24.13503677229434 cm\n"
]
},
{
"data": {
"text/plain": [
"'the difference is due to the fact that the manual calculation assumes the given values constitute the total population\\nwhereas the statistics library uses the formula assuming an infinite population.'"
]
},
"execution_count": 20,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"import statistics\n",
"\n",
"displacement_avg=sum(displacement)/len(displacement)\n",
"displacement_sq_avg=sum([i**2 for i in displacement])/len([i**2 for i in displacement])\n",
"\n",
"stdev_displacement=(displacement_sq_avg-displacement_avg**2)**0.5 # calculation according to stdev formula\n",
"\n",
"print('The standard deviation (manually calculated) of displacement is {} cm'.format(stdev_displacement))\n",
"\n",
"print ('The standard deviation (calculated from statistics library) of displacement is {} cm'.format(statistics.stdev(displacement)))\n",
"\n",
"#the difference is due to the fact that the manual calculation assumes the given values constitute\n",
"#the total population whereas the statistics library uses the formula assuming an infinite population\n"
]
}
],
"metadata": {
Expand All @@ -161,7 +280,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.7.2"
"version": "3.7.4"
}
},
"nbformat": 4,
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