Popcorn Hack 1

  1. Yes, it is binary
  2. No, it is not binary
  3. Yes, it is binary

Popcorn Hack 2

Example 1 (Adding): Binary Numbers: 101 + 110

The sum is 1011

Example 2 (Subtracting): Binary Numbers: 1101 - 1011

The difference is 10

Example 3 (Adding): Binary Numbers: 111 + 1001

The sum is 10000

Popcorn Hack 3

What will be the result of this expression?

True or False and False

The result is True

What will be the result of this expression?

not True and False

The result is False

What will be the result of this expression?

True or False and not False

The result is True

Homework Hack 1

Your task is to write a program that converts between decimal and binary numbers.

Instructions:

Create a function to convert a decimal number to binary. Create a function to convert a binary number (as a string) back to decimal. Test your functions with different numbers, both positive and negative. Use the following functions as a starting point:

A function that takes a decimal number and returns its binary equivalent. A function that takes a binary string and returns its decimal equivalent. Example Input/Output:

Decimal to Binary: 10 → 1010 Binary to Decimal: 1010 → 10

"""
Your task is to write a program that converts between decimal and binary numbers.

Instructions:

Create a function to convert a decimal number to binary.
Create a function to convert a binary number (as a string) back to decimal.
Test your functions with different numbers, both positive and negative.
Use the following functions as a starting point:

A function that takes a decimal number and returns its binary equivalent.
A function that takes a binary string and returns its decimal equivalent.
Example Input/Output:

Decimal to Binary: 10 → 1010
Binary to Decimal: 1010 → 10

"""

def decimal_to_binary(n):
    """
    Convert a decimal number to binary.
    
    :param n: Decimal number (int)
    :return: Binary equivalent (str)
    """
    if n < 0:
        raise ValueError("Negative numbers are not supported.")
    
    return bin(n).replace("0b", "")
def binary_to_decimal(b):
    """
    Convert a binary string to decimal.
    :param b: Binary string (str)
    :return: Decimal equivalent (int)
    """
    if not all(bit in '01' for bit in b):
        raise ValueError("Invalid binary string.")
    
    return int(b, 2)
# Test cases
if __name__ == "__main__":
    # Decimal to Binary
    decimal_number = 10
    binary_result = decimal_to_binary(decimal_number)
    print(f"Decimal to Binary: {decimal_number} → {binary_result}")

    # Binary to Decimal
    binary_string = "1010"
    decimal_result = binary_to_decimal(binary_string)
    print(f"Binary to Decimal: {binary_string} → {decimal_result}")
    # Additional test cases

Decimal to Binary: 10 → 1010
Binary to Decimal: 1010 → 10

Homework Hack 2

"""
This program asks the user to enter a difficulty level (“easy”, “medium”, or “hard”).
If the user types something invalid, it keeps asking until they enter a valid choice.
Once a valid difficulty is entered, it prints a confirmation message.

Please Help Fix this Code!

import time

difficulty = input("Enter difficulty (easy, medium, hard): ").lower().strip()

while difficulty != "easy" or difficulty != "medium" or difficulty != "hard":
    print("Please enter a valid difficulty level.")
    difficulty = input("Enter difficulty (easy, medium, hard): ").lower().strip()
    time.sleep(0.5)

print("Difficulty set to:", difficulty)

Please enter a valid difficulty level.

"""

def get_difficulty():
    """
    Ask the user to enter a difficulty level and validate the input.
    
    :return: Valid difficulty level (str)
    """
    valid_difficulties = ["easy", "medium", "hard"]
    difficulty = input("Enter difficulty (easy, medium, hard): ").lower().strip()

    while difficulty not in valid_difficulties:
        print("Please enter a valid difficulty level.")
        difficulty = input("Enter difficulty (easy, medium, hard): ").lower().strip()
        time.sleep(0.5)

    return difficulty
# Test the function
if __name__ == "__main__":
    difficulty = get_difficulty()
    print("Difficulty set to:", difficulty)

Difficulty set to: easy