Team Teach 3.4 Homework and Popcorn Hacks

3.4 Team lesson Popcorn Hacks + Homework

Popcorn hack are in both javascript then python

Popcorn hack 1

%%js


let favoriteMovie = "Alice in Wonderland";
let favoriteSport = "Football";
let petName = "Luna";


// Concatenation
let concatenatedMessage = "My favorite movie is " + favoriteMovie + ". I love playing " + favoriteSport + " and my pet's name is " + petName + ".";


// Interpolation
let interpolatedMessage = `My favorite movie is ${favoriteMovie}. I love playing ${favoriteSport} and my pet's name is ${petName}.`;

<IPython.core.display.Javascript object>

favorite_movie = "Alice in Wonderland"
favorite_sport = "Football"
pet_name = "Luna"

# Concatenation
concatenated_message = "My favorite movie is " + favorite_movie + ". I love playing " + favorite_sport + " and my pet's name is " + pet_name + "."

# Interpolation (using f-strings)
interpolated_message = f"My favorite movie is {favorite_movie}. I love playing {favorite_sport} and my pet's name is {pet_name}."

# Output the messages
print(concatenated_message)
print(interpolated_message)

My favorite movie is Ready Player One. I love playing Football and my pet's name is Luna.
My favorite movie is Ready Player One. I love playing Football and my pet's name is Luna.

Popcorn Hack 2

%%js
let phrase = "A journey of a thousand miles begins with a single step";


let partOne = phrase.slice(2, 8); // Extracts "journey"
let partTwo = phrase.slice(-18, -12); // Extracts "miles" using a negative starting index
let remainder = phrase.slice(20); // Extracts everything from "begins" to the end of the sentence


console.log("Extracted Word 1: " + partOne);  // Output: journey
console.log("Extracted Word 2: " + partTwo);  // Output: miles
console.log("Remainder of the Phrase: " + remainder); // Output: begins with a single step

<IPython.core.display.Javascript object>

phrase = "A journey of a thousand miles begins with a single step"


part_one = phrase[2:8]          
part_two = phrase[-18:-12]    
remainder = phrase[20:]         

print("Extracted Word 1:", part_one)         
print("Extracted Word 2:", part_two)        
print("Remainder of the Phrase:", remainder)  

Extracted Word 1: journe
Extracted Word 2: with a
Remainder of the Phrase: and miles begins with a single step

Popcorn hack 3 Removing Vowels

%%js
function removeVowels(inputStr) {
    const vowels = "aeilouAEILOU";
    let result = "";

    for (let char of inputStr) {
        if (!vowels.includes(char)) {
            result += char;
        }
    }
    return result;
}

const testSentence = "Coding is an adventure full of surprises!";
console.log(removeVowels(testSentence));

<IPython.core.display.Javascript object>

def remove_vowels(input_str):
    vowels = "aeilouAEILOU"  # Define vowels to remove
    # Use list comprehension to filter out vowels
    result = ''.join([char for char in input_str if char not in vowels])
    return result

# Different sentence for testing
test_sentence = "Learning to code can be quite fun!"
# Call the function and print the result
print(remove_vowels(test_sentence))

rnng t cd cn b qt fn!

Reverse Order Popcorn Hack 4

%%js
function reverseWords(inputStr) {
    const words = inputStr.split(" ");
    const reversedWords = words.reverse().join(" ");
    return reversedWords;
}


const sentence = "JavaScript is a versatile language!";
console.log(reverseWords(sentence));

<IPython.core.display.Javascript object>

def reverse_words(input_str):
    words = input_str.split()
    reversed_words = " ".join(reversed(words))
    return reversed_words

sentence = "Learning Python is a rewarding experience!"
print(reverse_words(sentence))

experience! rewarding a is Python Learning

Overview of what I learned from the lesson

Popcorn Hack #1: Variable Definition and String Combination

Task: Define three variables for a movie, a sport, and a pet’s name, then combine them into a complete message using both concatenation and interpolation.
What I Learned: This hack taught me about string manipulation techniques and how to effectively combine strings in programming.

---

Popcorn Hack #2: String Slicing

Task: Use the slice() method to extract specific words from the string “A journey of a thousand miles begins with a single step.”
What I Learned: I learned how to manipulate strings with slicing, allowing for precise access to different parts of a string.

---

Popcorn Hack #3: Removing Vowels

Task: Create a function that removes all vowels from a given sentence, both uppercase and lowercase.
What I Learned: This hack enhanced my understanding of character filtering in strings using loops or list comprehensions.

---

Popcorn Hack #4: Reversing the Order of Words

Task: Reverse the order of words in a sentence without altering the characters within the words.
What I Learned: I learned about list and string manipulation by splitting, reversing, and joining elements, which is key for text data handling.

---

Homework Hack 1

%%js
function generateGreeting(firstName, lastName) {
    if (!firstName || !lastName) {
        throw new Error("Both first and last names are required!");
    }

    let concatenatedGreeting = "Hello, " + firstName + " " + lastName + "!";
    
    let interpolatedGreeting = `Hello, ${firstName} ${lastName}!`;

    return {
        concatenated: concatenatedGreeting,
        interpolated: interpolatedGreeting
    };
}

function getUserInput() {
    let firstName = prompt("Enter your first name:");
    let lastName = prompt("Enter your last name:");

    return { firstName, lastName };
}

function main() {
    try {
        const { firstName, lastName } = getUserInput();
        const greetings = generateGreeting(firstName, lastName);

        console.log(greetings.concatenated);  // Output: Hello, John Doe!
        console.log(greetings.interpolated);   // Output: Hello, John Doe!
    } catch (error) {
        console.error(error.message);
    }
}

main();

<IPython.core.display.Javascript object>

Greeting Message Explanation

Creating a greeting message like “Hello, [First Name] [Last Name]!” involves using string concatenation or interpolation to combine user input.

String Concatenation

String concatenation involves joining multiple strings using the + operator. For example:

let firstName = "John";
let lastName = "Doe";
let greeting = "Hello, " + firstName + " " + lastName + "!";


## Homework Hack 2


```python
import string

def is_palindrome(input_str):
    # Normalize the string: convert to lowercase, remove spaces and punctuation
    normalized_str = ''.join(char.lower() for char in input_str if char.isalnum())
    
    # Check if the normalized string is equal to its reverse
    return normalized_str == normalized_str[::-1]

def main():
    user_input = input("Enter a string to check if it's a palindrome: ")
    
    if is_palindrome(user_input):
        print(f'"{user_input}" is a palindrome!')
    else:
        print(f'"{user_input}" is not a palindrome.')

# Execute the main function
if __name__ == "__main__":
    main()

"1" is a palindrome!

Palindrome Explanation

A palindrome is a word, phrase, or sequence that reads the same forwards and backwards, like “level” or “A man, a plan, a canal, Panama!”

Palindrome Checker

A palindrome checker evaluates whether a string is a palindrome by:

• Normalizing the input (lowercasing and removing non-alphanumeric characters).
• Comparing the cleaned string with its reverse.

This simple tool helps in text analysis and ensures accurate data validation.