From e90102d069079c91a7f5f21ca0045ea045005ba9 Mon Sep 17 00:00:00 2001
From: Ashwin Maran <amaran@wisc.edu>
Date: Sun, 18 Feb 2024 16:39:17 -0600
Subject: [PATCH] Upload New File
---
.../Lec_12_Iteration_Practice_Solution.ipynb | 566 ++++++++++++++++++
1 file changed, 566 insertions(+)
create mode 100644 s24/AmFam_Ashwin/12_Iterations_Practice/Lecture Code/Lec_12_Iteration_Practice_Solution.ipynb
diff --git a/s24/AmFam_Ashwin/12_Iterations_Practice/Lecture Code/Lec_12_Iteration_Practice_Solution.ipynb b/s24/AmFam_Ashwin/12_Iterations_Practice/Lecture Code/Lec_12_Iteration_Practice_Solution.ipynb
new file mode 100644
index 0000000..5b66540
--- /dev/null
+++ b/s24/AmFam_Ashwin/12_Iterations_Practice/Lecture Code/Lec_12_Iteration_Practice_Solution.ipynb
@@ -0,0 +1,566 @@
+{
+ "cells": [
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Warmup 1: Jupyter Notebook stuck in `[*]`?\n",
+ "\n",
+ "Press the Stop button! It's probably waiting for input. Otherwise, **restart** the kernel! (and run the cells)"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 1,
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdin",
+ "output_type": "stream",
+ "text": [
+ "Type in a number: 220\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "The number is 220 then 221 then 222 then 223 then 224!\n"
+ ]
+ }
+ ],
+ "source": [
+ "x = int(input(\"Type in a number: \"))\n",
+ "print(\"The number is \" + str(x), x + 1, x + 2, x + 3, x + 4, sep=\" then \", end=\"!\\n\")"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Warmup 2: Write a function that prints the factorial of parameter num"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 2,
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "def do_factorial(num):\n",
+ " factorial = 1\n",
+ " while num != 1:\n",
+ " factorial = factorial * num\n",
+ " num -= 1\n",
+ " return factorial"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 3,
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "1\n",
+ "2\n",
+ "6\n",
+ "24\n"
+ ]
+ }
+ ],
+ "source": [
+ "print(do_factorial(1))\n",
+ "print(do_factorial(2))\n",
+ "print(do_factorial(3))\n",
+ "print(do_factorial(4))"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Warmup 3: Complete the code to print a treasure map\n",
+ "The map should be a grid of size `width` and `height` with `symbol` everywhere, expect at the location: `treasure_row`, `treasure_col`, where an `'X'` is placed."
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 4,
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "----\n",
+ "----\n",
+ "--X-\n",
+ "----\n"
+ ]
+ }
+ ],
+ "source": [
+ "def print_treasure_map(symbol='-', height=4, width=4, treasure_row=2, treasure_col=2):\n",
+ " i = 0\n",
+ " while i < height: # TODO: Complete the loop condition for printing out each row.\n",
+ " j = 0\n",
+ " while j < width:\n",
+ " if i == treasure_row and j == treasure_col: # TODO: Complete the if condition for checking if we print an X or the symbol.\n",
+ " print('X', end=\"\")\n",
+ " else:\n",
+ " print(symbol, end=\"\")\n",
+ " j += 1 # TODO: Complete the statement so we do not run into an infinite loop.\n",
+ " print()\n",
+ " i += 1\n",
+ " \n",
+ "print_treasure_map()\n",
+ "# print_treasure_map(width=10, height=10)\n",
+ "# print_treasure_map('#', 7, 4, treasure_row=0, treasure_col=1)\n",
+ "# print_treasure_map('.', 5, 8, 3, 6)"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "# CS220: Lecture 12\n",
+ "\n",
+ "\n",
+ "## Learning Objectives\n",
+ "After this lecture you will be able to...\n",
+ "- Iterate through a dataset using for idx in range(project.count())\n",
+ "- Compute the frequency of data that meets a certain criteria\n",
+ "- Find the maximum or minimum value of a numeric column in a dataset\n",
+ "- Use break and continue in for loops when processing a dataset\n",
+ "- Handle missing numeric values when computing a maximum/minimum\n",
+ "- Use the index of a maximum or minimum to access other information about that data item\n"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 5,
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "import project"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 6,
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Help on module project:\n",
+ "\n",
+ "NAME\n",
+ " project\n",
+ "\n",
+ "FUNCTIONS\n",
+ " __init__()\n",
+ " \n",
+ " count()\n",
+ " This function will return the number of records in the dataset\n",
+ " \n",
+ " get_age(idx)\n",
+ " get_age(idx) returns the age of the student in row idx\n",
+ " \n",
+ " get_cats_or_dogs(idx)\n",
+ " get_cats_or_dogs(idx) returns whether student in row idx likes cats or dogs\n",
+ " \n",
+ " get_lecture(idx)\n",
+ " get_lecture(idx) returns the lecture of the student in row idx\n",
+ " \n",
+ " get_other_majors(idx)\n",
+ " get_other_majors(idx) returns the secondary major of the student in row idx\n",
+ " \n",
+ " get_pizza_topping(idx)\n",
+ " get_pizza_topping(idx) returns the preferred pizza toppings of the student in row idx\n",
+ " \n",
+ " get_primary_major(idx)\n",
+ " get_primary_major(idx) returns the primary major of the student in row idx\n",
+ " \n",
+ " get_procrastinator(idx)\n",
+ " get_procrastinator(idx) returns whether student in row idx is a procrastinator\n",
+ " \n",
+ " get_runner(idx)\n",
+ " get_runner(idx) returns whether student in row idx is a runner\n",
+ " \n",
+ " get_section(idx)\n",
+ " get_lecture(idx) returns the section of the student in row idx\n",
+ " \n",
+ " get_sleep_habit(idx)\n",
+ " get_sleep_habit(idx) returns the sleep habit of the student in row idx\n",
+ " \n",
+ " get_song(idx)\n",
+ " get_procrastinator(idx) returns the student in row idx favorite song\n",
+ " \n",
+ " get_zip_code(idx)\n",
+ " get_zip_code(idx) returns the residential zip code of the student in row idx\n",
+ "\n",
+ "DATA\n",
+ " __student__ = [{'Age': '19', 'Cats or dogs': 'cat', 'Latitude': '44.25...\n",
+ "\n",
+ "FILE\n",
+ " c:\\college\\uw-madison\\spring 2024\\cs220\\lecture code\\12_iteration_practice\\project.py\n",
+ "\n",
+ "\n"
+ ]
+ }
+ ],
+ "source": [
+ "help(project)"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 7,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "1019"
+ ]
+ },
+ "execution_count": 7,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "# Get the total # of responses\n",
+ "project.count()"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 8,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "'Other (please provide details below).'"
+ ]
+ },
+ "execution_count": 8,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "# Get the first student's primary major.\n",
+ "# With indices, we always start from 0!\n",
+ "project.get_primary_major(0)"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 1: Print and Break"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 9,
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "0 Other (please provide details below).\n",
+ "1 Engineering: Biomedical\n",
+ "2 Computer Science\n",
+ "3 Engineering: Other\n",
+ "4 Data Science\n",
+ "5 Engineering: Biomedical\n",
+ "6 Mathematics/AMEP\n",
+ "7 Engineering: Mechanical\n",
+ "8 Other (please provide details below).\n",
+ "9 Other (please provide details below).\n",
+ "10 Business: Information Systems\n"
+ ]
+ }
+ ],
+ "source": [
+ "for i in range(project.count()):\n",
+ " print (i, project.get_primary_major(i))\n",
+ " if i == 10:\n",
+ " break"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 10,
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "0 Other (please provide details below).\n",
+ "1 Engineering: Biomedical\n",
+ "2 Computer Science\n",
+ "3 Engineering: Other\n",
+ "4 Data Science\n",
+ "5 Engineering: Biomedical\n",
+ "6 Mathematics/AMEP\n",
+ "7 Engineering: Mechanical\n",
+ "8 Other (please provide details below).\n",
+ "9 Other (please provide details below).\n",
+ "10 Business: Information Systems\n"
+ ]
+ }
+ ],
+ "source": [
+ "# TODO: Write the same code as above using a while loop!\n",
+ "i = 0\n",
+ "while i <= 10:\n",
+ " print(i, project.get_primary_major(i))\n",
+ " i += 1"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 2: How many students are not in Computer Science?"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 11,
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "942 out of 1019 are non-cs!\n"
+ ]
+ }
+ ],
+ "source": [
+ "non_cs = 0\n",
+ "for i in range(project.count()):\n",
+ " major = project.get_primary_major(i)\n",
+ " if major == \"Computer Science\":\n",
+ " continue\n",
+ " non_cs += 1\n",
+ "print(non_cs, \"out of\", project.count(), \"are non-cs!\")"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 3: How many students are in Data Science or Statistics?"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 12,
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "200 out of 1019 are Data Science or Statistics majors!\n",
+ "19.63% of students are Data Science or Statistics majors!\n"
+ ]
+ }
+ ],
+ "source": [
+ "ds_or_stats = 0\n",
+ "for i in range(project.count()):\n",
+ " major = project.get_primary_major(i)\n",
+ " if major == \"Data Science\" or major == \"Statistics\":\n",
+ " ds_or_stats += 1\n",
+ "print(ds_or_stats, \"out of\", project.count(), \"are Data Science or Statistics majors!\")\n",
+ "# BONUS: Can you express this as a percentage?\n",
+ "print(str(round(ds_or_stats/project.count()*100, 2)) + \"% of students are Data Science or Statistics majors!\")\n",
+ "# BONUS+: ...rounded to 2 decimal places?"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 4: How many early birds are there below the age of 21?"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 13,
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "There are 190 early birds below the age of 21.\n",
+ "There are 791 total students below the age of 21.\n"
+ ]
+ }
+ ],
+ "source": [
+ "early_birds = 0\n",
+ "total_students = 0\n",
+ "for i in range(project.count()):\n",
+ " sleep_habit = project.get_sleep_habit(i)\n",
+ " age = project.get_age(i)\n",
+ " if age != \"\":\n",
+ " age = int(age)\n",
+ " if age < 21: # TODO Complete this condition!\n",
+ " total_students += 1\n",
+ " if sleep_habit == \"early bird\":\n",
+ " early_birds += 1\n",
+ " \n",
+ "print(\"There are\", early_birds, \"early birds below the age of 21.\")\n",
+ "print(\"There are\", total_students, \"total students below the age of 21.\")"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 5: What percentage of 20-year-olds are early birds?\n",
+ "\n",
+ "**Bonus:** How can we generalize our code to 'What percentage of x-year-olds are early birds?'"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 14,
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "There are 47 early birds that are 20.\n",
+ "There are 165 total students that are 20.\n",
+ "28.48% of 20 year olds are early birds\n"
+ ]
+ }
+ ],
+ "source": [
+ "def print_early_birds(target_age):\n",
+ " early_birds = 0\n",
+ " total_students = 0\n",
+ " for i in range(project.count()):\n",
+ " sleep_habit = project.get_sleep_habit(i)\n",
+ " age = project.get_age(i)\n",
+ " if age != \"\":\n",
+ " age = int(age)\n",
+ " if age == target_age:\n",
+ " total_students += 1\n",
+ " if sleep_habit == \"early bird\":\n",
+ " early_birds += 1\n",
+ "\n",
+ "\n",
+ " print(\"There are\", early_birds, \"early birds that are 20.\")\n",
+ " print(\"There are\", total_students, \"total students that are 20.\")\n",
+ " per_early = round((early_birds / total_students) * 100, 2)\n",
+ " print(str(per_early) + \"% of \" + str(target_age) + \" year olds are early birds\")\n",
+ " \n",
+ " \n",
+ "print_early_birds(20)"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 6: What is the age of the oldest student?"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 15,
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "The oldest student is 40\n"
+ ]
+ }
+ ],
+ "source": [
+ "# Python reserved keyword `max` should not be used as a variable name\n",
+ "max_age = 0\n",
+ "for i in range(project.count()):\n",
+ " if project.get_age(i) == \"\":\n",
+ " continue\n",
+ " student_age = int(project.get_age(i))\n",
+ " if student_age != \"\" and student_age > max_age:\n",
+ " max_age = student_age \n",
+ "print(\"The oldest student is\", max_age)"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 7: What is the age of the youngest student?"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 16,
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "The youngest student is 17\n"
+ ]
+ }
+ ],
+ "source": [
+ "min_age = 100\n",
+ "for i in range(project.count()):\n",
+ " if project.get_age(i) == \"\":\n",
+ " continue\n",
+ " student_age = int(project.get_age(i))\n",
+ " if student_age != \"\" and student_age < min_age:\n",
+ " min_age = student_age \n",
+ "print(\"The youngest student is\", min_age)"
+ ]
+ }
+ ],
+ "metadata": {
+ "kernelspec": {
+ "display_name": "Python 3 (ipykernel)",
+ "language": "python",
+ "name": "python3"
+ },
+ "language_info": {
+ "codemirror_mode": {
+ "name": "ipython",
+ "version": 3
+ },
+ "file_extension": ".py",
+ "mimetype": "text/x-python",
+ "name": "python",
+ "nbconvert_exporter": "python",
+ "pygments_lexer": "ipython3",
+ "version": "3.11.7"
+ }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 4
+}
--
GitLab