Credit

This challenge is taken with permission from https://www.mysterytwisterc3.org/en/challenges/level-1/beaver-code

Description

The encryption method is as follows:

The plaintext is divided into two halves, odd positions and even positions.

Example: 'CRYPTO' -> ['CYT','RPO']

This is then applied recursively to both halves, until each part is two letters or less. The parts are then merged.

'CRYPTO' -> ['CYT','RPO'] -> [['CT','Y'], ['RO','P']] -> 'CTYROP'

Challenge

Given a string encrypted with this method, decrypt it.

Valid input formats: ['CTYROP'], 'CTYROP'

Test cases

CTYROP -> CRYPTO
EOYCTNNPRI -> ENCRYPTION
RUOENFSEAFMRDHT -> RANDOMSTUFFHERE

Note: the encryption of the last test case is the same as the decryption, make sure you're decrypting!

posted over 3 years ago

CC BY-SA 4.0

3y ago

rak1507‭

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