Sha256: 82cd5ca238d80c5d2e882672ed07bc7b1be371a0c01b2a8464fae42f15465936
Contents?: true
Size: 494 Bytes
Versions: 396
Compression:
Stored size: 494 Bytes
Contents
class Atbash
def self.encode(plaintext)
new(plaintext).encode
end
attr_reader :plaintext
def initialize(plaintext)
@plaintext = plaintext
end
def encode
chunk convert(normalize(plaintext))
end
private
def convert(s)
s.tr(alphabet, key)
end
def chunk(s)
s.scan(/.{1,5}/).join(' ')
end
def normalize(s)
s.downcase.gsub(/[^a-z0-9]/, '')
end
def alphabet
'abcdefghijklmnopqrstuvwxyz'
end
def key
alphabet.reverse
end
end
Version data entries
396 entries across 396 versions & 1 rubygems