Nippes bigram

bigrams.rb

#!/usr/bin/env ruby

letters = "A".."Z"
numbers = 0..9

bigrams = letters.map do |letter|
  numbers.map do |number|
    letter + number.to_s
  end
end

bigrams = bigrams.flatten.sort_by { rand }

with_numbers = []
bigrams.each_with_index do |bigram, index|
  with_numbers << [bigram, "%0.3d" % ( index + 1 )]
end

ordered_by_letter = with_numbers.sort_by(&:first)
ordered_by_number = with_numbers.map(&:reverse).sort

puts ordered_by_letter.map {|i| i.join(' = ')}
puts
puts ordered_by_number.map {|i| i.join(' = ')}