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"""
NumberInEnglish  by Csaba Urbaniczky

Purpose: Convert a digit to an string in plain english
Assumptions: -
Effect: Could be set up to extend the integer class with this functionality
Change history: Rewritten version of a Ruby example from 'Learn to Program'
   ' v 1.0 2009-01-09  Csaba Urbaniczky: First version
"""
class ConvertNumberToPlainEnglish

   def numberInEnglish(numberToTranslate as int) as String is shared
        try
            if numberToTranslate == 0
                return "zero" # obvious special case

            numberAsText as String = "" # Here is the the resulting text as the translation is added up

            # Take care of negative numbers
            if numberToTranslate < 0
                numberAsText = "minus "
                numberToTranslate = Math.abs(numberToTranslate)
   
            # These are the binding numbers and the translated binding word
            bindingNumberLookup = [ 1000000000 , 1000000, 1000, 100]
            bindingWordLookup = [ ' billion', ' million', ' thousand', ' hundred',]

            reminder  = numberToTranslate # This is the reminder of the number that will appear as text to the right of a binding word

            # Go through the number for binding words and take care of the left part recursively
            for i in  bindingNumberLookup.count 
                numberToTranslate = reminder // bindingNumberLookup[i] # The left part to the binding word/number like " hundred"     
                reminder = reminder % bindingNumberLookup[i]  # The right part of the binding word/number        
                if numberToTranslate > 0  # Recursion to build up the left part of the number
                    numberAsText +=  .numberInEnglish(numberToTranslate) + bindingWordLookup[i]
                    if reminder > 0
                        numberAsText +=  ' '# So we don't write as millionone....
                       
            # Reminder is now the right part of the binding word and less than 100 - many spacail cases
           
            # Take care of 11 .. 19 teens specials since we can't write 'teenty-two' instead of twelve
            if reminder >= 11 and reminder <= 19
                # Array used to look up english words for numbers, Since array is zero-based, fill "0:th place" with dummy value
                teenagersLookup  = ['zero_never_used', 'eleven', 'twelve', 'thirteen', 'fourteen', 'fifteen', 'sixteen', 'seventeen', 'eighteen', 'nineteen']
                return numberAsText + teenagersLookup[reminder - 10] #Finished - return with this special case
   
            # Now 0 .. 10, 20 .. 99 in left to translate to plain english
            numberToTranslate = reminder // 10 # How many tens left, 0 or >=2                 
            reminder = reminder % 10 # Only single digits left now in reminder                                 
            if numberToTranslate > 0  # The tens left
                tensPlaceLookup = ['zero_never_used', 'ten', 'twenty', 'thirty', 'fourty', 'fifty', 'sixty', 'seventy', 'eighty', 'ninety']
                numberAsText += tensPlaceLookup[numberToTranslate]
                if reminder > 0
                    numberAsText += "-" # so we don't write 'sixtyfour'
                   
            # Take care of 0 .. 9 that is left to check
            if reminder > 0  # add string if it is larger than zero
                onesPlaceLookup = ['zero_never_used', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight', 'nine', 'onesPlaceLookupbug']
                return numberAsText + onesPlaceLookup[reminder]
            else
                return numberAsText
               
        catch e as Exception 
            print e
            return numberAsText # end numberInEnglish

   def main is shared # called 'static' in error message
      try
            testNumber= 0
         print '[testNumber] is in english: [.numberInEnglish(testNumber)]'
         testNumber= 5
         print '[testNumber] is in english: [.numberInEnglish(testNumber)]'
            testNumber= 15
         print '[testNumber] is in english: [.numberInEnglish(testNumber)]'
            testNumber= -10
         print '[testNumber] is in english: [.numberInEnglish(testNumber)]'
            testNumber= 42
         print '[testNumber] is in english: [.numberInEnglish(testNumber)]'
            testNumber= 492
         print '[testNumber] is in english: [.numberInEnglish(testNumber)]'
         testNumber= -1492
         print '[testNumber] is in english: [.numberInEnglish(testNumber)]'
            testNumber= 1341492
         print '[testNumber] is in english: [.numberInEnglish(testNumber)]'
            testNumber= 1341492123
         print '[testNumber] is in english: [.numberInEnglish(testNumber)]'
      catch e as Exception
            print e

# End Class


5) Can't this loop:

for i in bindingNumberLookup.count # here use bindingNumberLookup[i]

be rewritten like this:

for bindingNumber in bindingNumberLookup # simply use bindingNumber

Csaba wrote:Hi
In this case, how is bindingWordLookup used? Is it possible to have two iteratios, one for each array?

for i,num in enumerate(bindingNumberLookup)
    # here use num, bindingWordLookup(i)

for num,word in bindingNumberLookup,bindingWordLookup
    # here use num,word

# These are the binding numbers and the translated binding word 
numToWord = {   1_000_000_000 : ' billion', 
                          1_000_000 : ' million',
                          1_000 : ' thousand'
                          100 : ' hundred' }

remainder = n  # This is the remainder of the number that will appear as text to the right of a binding word

# Go through the number for binding words and take care of the left part recursively
for num,word in numToWord
    n = remainder // bindingNumberLookup[i]  # The left part to the binding word/number like ' hundred' 
    remainder = remainder % num  # The right part of the binding word/number        
    if n > 0  # Recursion to build up the left part of the number
        english += .numberToEnglish(n) + word
        if remainder > 0
            english += ' '  # So we don't write as millionone....

for num,word in Dictionary.zip(bindingNumberLookup,bindingWordLookup)
   # use num,word