Numbers into Words

gistfile1.rb

module InWords

#The method for turning integers 1-19 into the appropriate strings.
	def under20
		array_small_numbers = ["zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen"]
		return array_small_numbers[self]
	end
	
#The method for turning integers 20-99 into the appropriate strings.
	def under100
		first_digit = (self/10).floor
			if first_digit == 2
				first_part = "twenty"
			elsif first_digit == 3
				first_part = "three"				
			elsif first_digit == 4
				first_part = "forty"
			elsif first_digit == 5
				first_part = "five"					
			elsif first_digit == 6
				first_part = "sixty"
			elsif first_digit == 7
				first_part = "seventy"				
			elsif first_digit == 8
				first_part = "eighty"
			elsif first_digit == 9
				first_part = "ninety"
			end
			
		second_part = (self % 10).under20
		
		return first_part + " " + second_part
		
	end
#This method turns integers between 100 and 999	into words. For the number in the hundreds place, I just passed the number to the under10 method then added "hundred" to the end.
#For the numbers in the tens and ones place, I 
	def under1000
		first_digit = (self/100).floor
		first_part = first_digit.under20 + " hundred "
		second_part = (self % 100).in_words
		return first_part + second_part
	end
	
	def in_words
		if (self < 20)
			return self.under20
		end
		
		if (self > 19 && self < 100)
			return self.under100
		end
		
		if (self > 99 && self < 1000)
			return self.under1000
		end		
	end
end

class Fixnum
	include InWords
end