wichteln.rb

#!/usr/bin/ruby

NAMES = %w{
  Heinz
  Ina
  Ferdinand
  Konstantin
  Kaspar
  Katalin
  Leonie
}

def tainted?(associations)
  return true if associations.size == 0

  assoc = associations.dup
  assoc.keep_if { |k, v| k == v }

  assoc.size > 0
end

associations = {}

passes = 0

while tainted?(associations)
  bowl = NAMES.dup

  NAMES.each do |name|
    associations[name] = bowl.shuffle!.shift
  end

  passes += 1
end

system 'clear'

puts "Lösung gefunden nach #{passes} Versuchen."

associations.each do |key, value|
  File.write "#{key}.txt", value +  ' ' * (NAMES.sort_by(&:length).last.length - value.length)
end