Portfolio 1: Methods and Recursion

methods_and_recursion.rb

# Create a dictionary of english words mapped to number values
# Take in a number
# Start with the largest value in the dictionary, see if the number is evenly divisible by it
#   IF it is, then add that word to the method called on the number with the value of the word divided out
# Return the string




WORD_MAP = { "Ninety" => 90,
             "Eighty" => 80,
             "Seventy" => 70,
             "Sixty" => 60,
             "Fifty" => 50,
             "Fourty" => 40,
             "Thirty" => 30,
             "Twenty" => 20,
             "Fifteen" => 15,
             "Thirteen" => 13,
             "Twelve" => 12,
             "Eleven" => 11,
             "Ten" => 10,
             "Nine" => 9,
             "Eight" => 8,
             "Seven" => 7,
             "Six" => 6,
             "Five" => 5,
             "Four" => 4,
             "Three" => 3,
             "Two" => 2,
             "One" => 1 }


def in_words(num)
  english_num = ""
  if num >= 100
    english_num = in_words(num / 100) + "Hundred"
    num %= 100
  elsif (num >= 16 && num <= 19) || num == 14 || num == 15
    return in_words(num - 10) + "teen"
  end

  WORD_MAP.each_pair do |word, digit|
    if num > 0 && num >= digit
      english_num << word
      num -= digit
    end
  end
  english_num
end


puts "10 in words should be Ten: #{ in_words(10) }"
puts "2 in words should be Two: #{ in_words(2) }"
puts "8 in words should be Eight: #{ in_words(8) }"
puts "18 in words should be Eightteen: #{ in_words(18) }"
puts "28 in words should be TwentyEight: #{ in_words(28) }"
puts "53 in words should be FiftyThree: #{ in_words(53) }"
puts "81 in words should be EightyOne: #{ in_words(81) }"
puts "100 in words should be OneHundred: #{ in_words(100) }"
puts "101 in words should be OneHundredOne: #{ in_words(101) }"
puts "222 in words should be TwoHundredTwentyTwo: #{ in_words(222) }"
puts "1776 in words should be SeventeenHundredSeventySix: #{ in_words(1776) }"
puts "21776 in words should be TwentyOneThousandSevenHundredSeventySix: #{ in_words(21776) }"