README.md 981 B
Atbash Cipher
by Matt tags: strings, formatting, cryptography
Summary
The Atbash cipher is an encryption method in which each letter of a word is replaced with its "mirror" letter in the alphabet: A Z; B Y; C X; etc. Create a function that takes a string and applies the Atbash cipher to it. Examples atbash("apple") ➞ "zkkov" atbash("Hello world!") ➞ "Svool dliow!" atbash("Christmas is the 25th of December") ➞ "Xsirhgnzh r
Instructions
The Atbash cipher is an encryption method in which each letter of a word is replaced with its "mirror" letter in the alphabet: A <=> Z; B <=> Y; C <=> X; etc.
Create a function that takes a string and applies the Atbash cipher to it.
Examples
atbash("apple") ➞ "zkkov"
atbash("Hello world!") ➞ "Svool dliow!"
atbash("Christmas is the 25th of December") ➞ "Xsirhgnzh rh gsv 25gs lu Wvxvnyvi"
Notes
- Capitalisation should be retained.
- Non-alphabetic characters should not be altered.