CodeGolfScotland/September 2016 - Reversed Alphabet.md

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Code Golf September 2016

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September 2016 - Reversed Alphabet

Reverse the alphabet so that abc => zyx and ABC => ZYX

Examples:

("code") => "xlwv" ("Golf") => "Tlou" ("1Avva8TT") => "1Zee8GG"

^You can assume that you will always recieved a valid string

Language: PHP (v5.4 — deprecated use of /e modifier)
Length: 73
Solution:

function r($w){return preg_replace('/[a-z]/ei','chr(ord(\\0)+4^31)',$w);}

or 50 characters without the function() wrapping:

preg_replace('/[a-z]/ei','chr(ord(\\0)+4^31)',$w);

Language: Python 2.7
Length: 51
Solution:

f=lambda s:`map(lambda x:chr(31^4+ord(x)),s)`[2::5]