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Forked from dvanhorn/1.rkt
Created August 28, 2011 09:14
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1.rkt
#lang racket
(require srfi/13)
(define (translate s)
(let* ([a (char->integer #\a)]
[h (for/hash ([c (in-range 26)])
(values (integer->char (+ a c))
(integer->char (+ a (modulo (+ c 2) 26)))))])
(string-map (lambda (c) (hash-ref h c c)) s)))
(translate " g fmnc wms bgblr rpylqjyrc gr zw fylb. rfyrq ufyr amknsrcpq ypc dmp. bmgle gr gl zw fylb gq glcddgagclr ylb rfyr'q ufw rfgq rcvr gq qm jmle. sqgle qrpgle.kyicrpylq() gq pcamkkclbcb. lmu ynnjw ml rfc spj.")
(translate "map")
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