Implement Caesar Cipher Shift 4 | Dataford Interview Questions

Implement a Caesar cipher encryption that shifts each letter by 4 positions (e.g., A->E, V->Z, W->A). Preserve uppercase and lowercase characters, and leave digits, spaces, punctuation, and other non-letter characters unchanged. Implement caesar_cipher(text), accepting a string and returning the encrypted string. For example, "Attack at Dawn!" returns "Exxego ex Hear!", and "XYZ xyz" returns "BCD bcd".

Constraints

0 <= len(text) <= 10^5
text contains standard ASCII characters
The shift is always exactly 4 positions
Uppercase and lowercase letters must retain their case
Non-letter characters must remain unchanged

Function Signature

def caesar_cipher(text):

Your question is Implement Caesar Cipher Shift 4. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Problem

Constraints

0 <= len(text) <= 10^5
text contains standard ASCII characters
The shift is always exactly 4 positions
Uppercase and lowercase letters must retain their case
Non-letter characters must remain unchanged

Function Signature

def caesar_cipher(text):

Your question is Implement Caesar Cipher Shift 4. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.