3.10b_teamteach_ipynb_2_

• 4 min read 

# Step 1: Create an empty list to store grocery items
grocery_list = []

# Step 2: Input three grocery items and add them to the list
for _ in range(3):
    item = input("Enter a grocery item: ")
    grocery_list.append(item)

# Step 3: Display the current grocery list after all items are added
print("Current grocery list:", grocery_list)

# Step 4: Sort the list alphabetically and print the sorted list
grocery_list.sort()
print("Sorted grocery list:", grocery_list)

# Step 5: Remove one item specified by the user and display the updated list
item_to_remove = input("Enter an item to remove from the list: ")
grocery_list.remove(item_to_remove)
print("Updated grocery list:", grocery_list)

Problem #2 - Filtering Even Numbers

Objective:

Create a list of numbers and filter for even numbers.

# Step 1: Create a list of integers from 1 to 20
numbers = list(range(1, 21))

# Step 2: Print the original list
print("Original list of numbers:", numbers)

# Step 3: Create a new list that contains only the even numbers using list comprehension
even_numbers = [num for num in numbers if num % 2 == 0]

# Step 4: Print the list of even numbers
print("List of even numbers:", even_numbers)

Problem #3 - Student Grades Manager

Objective:

Write a program that manages a list of student grades.

# Step 1: Create an empty list to store student grades
grades = []

# Step 2: Input three grades (as integers) and add them to the list
for _ in range(3):
    grade = int(input("Enter a student grade: "))
    grades.append(grade)

# Step 3: Print the list of grades after all grades are entered
print("List of grades:", grades)

# Step 4: Create a new list that contains only grades above 60 and print this list
passing_grades = [grade for grade in grades if grade > 60]
print("Grades above 60:", passing_grades)

Problem #4 - Number List Operations

Objective:

Create a list of numbers and perform basic operations.

# Step 1: Create a list of numbers from 1 to 10
numbers = list(range(1, 11))

# Step 2: Print the original list
print("Original list:", numbers)

# Step 3: Sort the list in descending order
numbers.sort(reverse=True)
print("List in descending order:", numbers)

# Step 4: Slice the list to get the first five numbers and print them
first_five = numbers[:5]
print("First five numbers:", first_five)

# Step 5: Sort the list again in ascending order and print it
numbers.sort()
print("List in ascending order:", numbers)

JavaScript Homework

Problem #1: Basic Array Creation

Objective:

  • Create an array in JavaScript with at least 5 values.
  • Use console.log() to display the array.

Bonus:

  • Use the reverse() popcorn hack to reverse your array.
%%js 
// Step 1: Create an array with at least 5 values
let myArray = [10, 20, 30, 40, 50];

// Step 2: Display the array
console.log("Original array:", myArray);

// Bonus: Use the reverse() hack to reverse the array
myArray.reverse();
console.log("Reversed array:", myArray);

Problem #2: Accessing Elements

Objective:

  • Given the array sports = ["soccer", "football", "basketball", "wrestling", "swimming"], display the values “soccer” and “wrestling” using their indexes.
%%js 
// Step 1: Create the sports array
let sports = ["soccer", "football", "basketball", "wrestling", "swimming"];

// Step 2: Access and display the elements "soccer" and "wrestling"
console.log("First sport:", sports[0]);  // soccer
console.log("Fourth sport:", sports[3]);  // wrestling

Problem #3: Adding and Removing Items

Objective:

  • Create an array called choresList initialized with four items of your choice.
  • Use push(), shift(), pop(), and unshift() to change the list.
  • Use console.log() to display the output each time the list changes.

Bonus:

  • Use the push() and spread operator popcorn hack to add multiple values to your choresList at once.
%%js 
// Step 1: Create the choresList array with 4 items
let choresList = ["dishes", "laundry", "vacuuming", "dusting"];

// Step 2: Add an item using push()
choresList.push("groceries");
console.log("After push:", choresList);

// Step 3: Remove the first item using shift()
choresList.shift();
console.log("After shift:", choresList);

// Step 4: Remove the last item using pop()
choresList.pop();
console.log("After pop:", choresList);

// Step 5: Add an item to the beginning using unshift()
choresList.unshift("cooking");
console.log("After unshift:", choresList);

// Bonus: Use push() and spread operator to add multiple items
choresList.push(...["trash", "mopping"]);
console.log("After adding multiple items with spread operator:", choresList);

Problem #4: Iteration and Conditionals

Objective:

  • Create an array that contains ten random numbers (both even and odd).
  • Write a function that iterates through the array and counts how many even numbers appear.
  • Return the count and display the output using console.log().
%%js 
// Step 1: Create an array with 10 random numbers
let randomNumbers = [3, 4, 7, 12, 19, 22, 25, 30, 33, 40];

// Step 2: Function to count even numbers
function countEvenNumbers(arr) {
    let count = 0;
    for (let i = 0; i < arr.length; i++) {
        if (arr[i] % 2 === 0) {
            count++;
        }
    }
    return count;
}

// Step 3: Display the count of even numbers
console.log("Number of even numbers:", countEvenNumbers(randomNumbers));