Count the number of times each gift is given

12-days.rb

#!/usr/bin/env ruby

verses = {
  1 => "Patridges in a pear tree",
  2 => "Turtle doves",
  3 => "French hens",
  4 => "Calling birds",
  5 => "Golden rings",
  6 => "Geese a layin'",
  7 => "Swans a swimmin'",
  8 => "Maids a milkin'",
  9 => "Ladies dancing",
  10 => "Lords a leapin'",
  11 => "Pipers pipin'",
  12 => "Twelve drummers drummin'"
}

counts = {}

1.upto verses.size do |verse|
  1.upto verse do |line|
    counts[line] ||= 0
    counts[line] += line
  end
end

counts.each do |verse, count|
  puts "#{count} #{verses[verse]}"
end

total = counts.values.sum
puts "Total gifts: #{total}"