Class: EnigmaRuby::Plugboard

Inherits:
Object
  • Object
show all
Defined in:
lib/enigma_ruby/plugboard.rb

Constant Summary collapse

PAIRS = 
%w[AF BE CD].freeze

Class Method Summary collapse

Class Method Details

.check_duplicates ⇒ Object 



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# File 'lib/enigma_ruby/plugboard.rb', line 16

def self.check_duplicates
  characters = PAIRS.join.chars
  duplicates = characters.select { |char| characters.count(char) > 1 }.uniq
  raise "Duplicate characters found: #{duplicates.join(', ')}" if duplicates.any?
end

.swap(char) ⇒ Object 



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# File 'lib/enigma_ruby/plugboard.rb', line 6

def self.swap(char)
  check_duplicates

  PAIRS.each do |pair|
    return pair[1] if pair[0] == char
    return pair[0] if pair[1] == char
  end
  char
end