Code RoomCaesar cipher decryption
EasyPrep Room Coding #165

Caesar cipher decryption

CodingSecurityAlgorithms & data structuresEntry–Mid~12 min

Implement Caesar-cipher decryption. Given ciphertext `text` and an integer `shift`, recover the plaintext by shifting each alphabetic character BACKWARD by `shift` positions (wrapping within the alphabet), preserving case. The shift may be any non-negative integer (e.g. larger than 26). Non-alphabetic characters pass through unchanged.

Implement
caesar_decrypt(text: str, shift: int) → str
Examples
in["KHOOR",3]out"HELLO"
What a strong answer looks like

State your approach and its time/space complexity out loud before you optimize. Handle the edge cases (empty input, duplicates, overflow), and say why you chose this over the brute force. Green tests are the floor, not the grade.

0:00 of about 12 min
InputExpectedGot
["KHOOR",3]"HELLO"not run yetsample