8.3 8 Create Your Own Encoding Codehs Answers -

Early image file formats, such as BMP and PCX, utilized variations of Run-Length Encoding to compress uniform blocks of pixels (like a solid white background) into tiny file sizes.

Below is the complete, fully commented solution that satisfies the requirements for CodeHS Exercise 8.3.8. javascript

This is your "lookup table." You can make the values anything—numbers, emojis, or even other letters.

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print(f"Plain Text: plain_text") print(f"Encoded Text: encoded") print(f"Decoded Text: decoded")

# Test with a more complex string test = "CodeHS 8.3.8 is fun!" print("\nTest original:", test) enc_test = encode(test) print("Test encoded:", enc_test) print("Test decoded:", decode(enc_test))

Max was thrilled to see that his message, "HELLO," was transformed into 🌞GURUB😊. Emma was equally excited to decode the message and reveal the hidden text. Early image file formats, such as BMP and

In this exercise, you aren't just writing a program; you are inventing a . Your task is to:

# 1. Get input from the user secret_message = input("Enter a message to encode: ") encoded_message = "" # 2. Loop through every character for char in secret_message: # 3. Apply substitution logic if char.lower() == 'a': encoded_message += "4" elif char.lower() == 'e': encoded_message += "3" elif char.lower() == 'i': encoded_message += "1" elif char.lower() == 'o': encoded_message += "0" elif char.lower() == 'u': encoded_message += "7" else: # Keep non-vowels the same encoded_message += char # 4. Print the final encoded string print("Encoded message: " + encoded_message) Use code with caution. Debugging & Passing CodeHS Autograders

Before writing code, you need a plan for how you will change the text. Here are three popular approaches you can use for this assignment: 1. The Caesar Cipher (Character Shifting) This public link is valid for 7 days

The specific task in 8.3.8 is usually to create a function named encode that takes a string as a parameter. The goal is to return a new string where every character from the original string is "shifted" to the next character in the ASCII table.

Create a function that reverses that exact process to retrieve the original message. Step-by-Step Logic for the Code 1. Choosing Your Encoding Scheme

By completing 8.3.8, you demonstrate that you understand , string manipulation , and algorithm design .