pigeons.rb

########################
# NYC PIGEON ORGANIZER #
########################
 
# Start with the following collected data on NYC pigeons.
 

pigeon_data = {
  :color => {
    :purple => ["Theo", "Peter Jr.", "Lucky"],
    :grey => ["Theo", "Peter Jr.", "Ms .K"],
    :white => ["Queenie", "Andrew", "Ms .K", "Alex"],
    :brown => ["Queenie", "Alex"]
  },
  :gender => {
    :male => ["Alex", "Theo", "Peter Jr.", "Andrew", "Lucky"],
    :female => ["Queenie", "Ms .K"]
  },
  :lives => {
    "Subway" => ["Theo", "Queenie"],
    "Central Park" => ["Alex", "Ms .K", "Lucky"],
    "Library" => ["Peter Jr."],
    "City Hall" => ["Andrew"]
  }
}

organized_pigeon_data = {}

pigeon_data.each do |property, value_hash|
  value_hash.each do |value, birds|
    birds.each do |name|
      # organized_pigeon_data[name] ||= {}
      # organized_pigeon_data[name][property] ||= []
      # organized_pigeon_data[name][property] << value.to_s
      
      if organized_pigeon_data[name]
        if organized_pigeon_data[name][property]
          organized_pigeon_data[name][property] << value
        else
          organized_pigeon_data[name][property] = [value]
        end
      else
        organized_pigeon_data[name] = {property => [value]}
      end
    end
  end
end

# Iterate over the hash above collecting each pigeon by name and insert it
# as the key of a new hash where each name holds the attributes for that bird. 
# Your output should match the hash below:
 
# pigeon_list = {
#   "Theo" => {
#     :color => ["purple", "grey"],
#     :gender => "male",
#     :lives => "Subway"
#   },
#   "Peter Jr." => {
#     :color => ["purple", "grey"],
#     :gender => "male",
#     :lives => "Library"
#   },
#   "Lucky" => {
#     :color => ["purple"],
#     :gender => "male",
#     :lives => "City Hall"
#   },
#   "Ms .K" => {
#     :color => ["grey", "white"],
#     :gender => "female",
#     :lives => "Central Park"
#   },
#   "Queenie" => {
#     :color => ["white", "brown"],
#     :gender => "female",
#     :lives => "Subway"
#   },
#   "Andrew" => {
#     :color => ["white"],
#     :gender => "male",
#     :lives => "Central Park"
#   },
#   "Alex" => {
#     :color => ["white", "brown"],
#     :gender => "male",
#     :lives => "Central Park"
#   }
# }