Converting Indian Rupees to words (with Paise) in Zoho Creator

Github Public Gist

Function 1

TwoDigitWords

string String.TwoDigitWords(int num)
{
  double_words = {"Twenty","Thirty","Forty","Fifty","Sixty","Seventy","Eighty","Ninety"};
  teen_words = {"Ten","Eleven","Twelve","Thirteen","Fourteen","Fifteen","Sixteen","Seventeen","Eighteen","Nineteen"};
  single_words = {"One","Two","Three","Four","Five","Six","Seven","Eight","Nine"};
  //num = 99;
  amount_in_words = "";
  if(num > 0)
  {
    if(num < 10)
    {
      amount_in_words = single_words.get(num - 1);
    }
    else if(num < 20)
    {
      amount_in_words = teen_words.get(num - 10);
    }
    else if(num < 100)
    {
      first_digit_str = num.toString().substring(0,1);
      first_digit = first_digit_str.toLong();
      if(num % 10 == 0)
      {
        amount_in_words = double_words.get(first_digit - 2);
      }
      else
      {
        second_digit_str = num.toString().substring(1);
        second_digit = second_digit_str.toLong();
        amount_in_words = double_words.get(first_digit - 2) + " " + single_words.get(second_digit - 1);
      }
    }
  }
  return amount_in_words;
}

Function 2

ThreeDigitWords

string String.ThreeDigitWords(int num)
{
  amount_in_words = "";
  if(num > 99)
  {
    single_words = {"One","Two","Three","Four","Five","Six","Seven","Eight","Nine"};
    first_digit_str = num.toString().substring(0,1);
    first_digit = first_digit_str.toLong();
    amount_in_words = amount_in_words + single_words.get(first_digit - 1) + " hundred";
    second_digit_str = num.toString().substring(1);
    second_digit = second_digit_str.toLong();
    if(second_digit > 0)
    {
      amount_in_words = amount_in_words + " and " + thisapp.String.TwoDigitWords(second_digit);
    }
  }
  return amount_in_words;
}

Function 3

RupeeInWords (Recursive, to handle thousands of crores)

string String.RupeeInWords(int amount)
{
  amount_in_words = "";
  //Crores -> 9 or more Digits
  if((amount / 10000000).toLong() > 0)
  {
    crore_num = (amount / 10000000).toLong();
    crore_str = thisapp.String.Amount2Words(crore_num);
    crore_num_len = crore_num.toString().length();
    rest_amount = amount.toString().substring(crore_num_len).toLong();
    rest_str = thisapp.String.Amount2Words(rest_amount);
    amount_in_words = crore_str + " Crores " + rest_str;
  }
  //Lakhs -> 7 Digits
  else if((amount / 100000).toLong() > 0)
  {
    lakh_word = thisapp.String.TwoDigitWords((amount / 100000).toLong()) + " lakhs";
    rest_str = amount.toString().substring(2);
    amount_in_words = lakh_word + " " + thisapp.String.Amount2Words(rest_str.toLong());
  }
  //Thousands -> 5 Digits
  else if((amount / 1000).toLong() > 0)
  {
    thou_word = thisapp.String.TwoDigitWords((amount / 1000).toLong()) + " thousand";
    rest_of_word = thisapp.String.ThreeDigitWords((amount % 1000).toLong());
    amount_in_words = thou_word + " " + rest_of_word;
  }
  else if(amount.toLong() > 99)
  {
    amount_in_words = thisapp.String.ThreeDigitWords(amount.toLong());
  }
  else if(amount.toLong() > 0)
  {
    amount_in_words = thisapp.String.TwoDigitWords(amount.toLong());
  }
  return amount_in_words;
}

Function 4

Amount2Words (Actual function where the amount is passed)

string String.Amount2Words(float amount)
{
  //amount.frac() not working for long numbers
  paise_str = amount.toString().getSuffix(".");
  if(paise_str != "")
  {
    paise_amount = paise_str.toLong();
    paise_str = " and "+  thisapp.String.TwoDigitWords(paise_amount) + " paise";
  }
  rupee_str = String.RupeeInWords(amount.toLong());
  return rupee_str + " rupees" + paise_str + " only";
}

Testing

Amount = 12341234567.89;
rupee_text = thisapp.String.Amount2Words(Amount);

//Output
//One thousand Two hundred and Thirty Four Crores Twelve lakhs Thirty Four thousand Five hundred and Sixty Seven rupees and Eighty Nine paise only