8.3 8 Create Your Own Encoding Codehs Answers

Use the alphabet index (a=1, b=2… z=26) plus special codes for space (27), period (28), etc.

def encode(s):
    result = []
    for ch in s.lower():
        if ch.isalpha():
            result.append(ord(ch) - ord('a') + 1)
        elif ch == ' ':
            result.append(27)
    return result

Insight: This is essentially a subset of ASCII (a=97 in ASCII). It saves space if you only need lowercase letters and spaces – a form of domain-specific compression. 8.3 8 create your own encoding codehs answers

Encoding is the process of converting information into a different format so it can be stored, transmitted, or interpreted. In computer science education (such as CodeHS modules), creating a custom encoding helps students understand representation, efficiency, error detection, and creativity in mapping real-world data to binary or symbolic forms. This paper explains why designing an encoding matters, outlines clear steps to create one Use the alphabet index (a=1, b=2… z=26) plus

Plaintext: "CS IS FUN."

  • Decoding follows the Decode pseudocode above.

    • Map a to 01, b to 02, etc., using zero-padded two-digit numbers. Insight : This is essentially a subset of