SimpleCipher

simple_cipher.rb

# encoding: utf-8
class SimpleCipher

  def initialize(randomized)
    alphasum = ('a'..'z').to_a + ('A'..'Z').to_a + ('0'..'9').to_a + [' ']
    @map = alphasum.zip(randomized).inject(:encrypt => {} , :decrypt => {}) do |output,(a,b)|
      output[:encrypt][a] = b
      output[:decrypt][b] = a
      output
    end
  end

  def encrypt(input)
    input.split(//).map { |char| @map[:encrypt][char] }.join
  end

  def decrypt(input)
    input.split(//).map { |char| @map[:decrypt][char] }.join
  end

end