Simple Data Encryption | Dataford Interview Questions

Write a function to implement a simple data encryption algorithm.

Implement a Caesar cipher that shifts each English letter by shift positions, wrapping around the alphabet. Preserve uppercase and lowercase characters, leave digits and punctuation unchanged, and support negative or large shifts.

Function

encrypt(text, shift)

Return the encrypted string.

Constraints

0 <= len(text) <= 1000
text contains arbitrary Unicode characters, but only English letters A-Z and a-z are shifted
shift is an integer
Digits, whitespace, punctuation, and non-English characters remain unchanged

Function Signature

def encrypt(text, shift):

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