numberToWords static method

String numberToWords(int number)

Convert number to words (Indian format)

number - The number to convert Returns number in words

Implementation

static String numberToWords(int number) {
  if (number == 0) return 'Zero';

  final ones = ['', 'One', 'Two', 'Three', 'Four', 'Five', 'Six', 'Seven', 'Eight', 'Nine'];
  final teens = ['Ten', 'Eleven', 'Twelve', 'Thirteen', 'Fourteen', 'Fifteen', 'Sixteen', 'Seventeen', 'Eighteen', 'Nineteen'];
  final tens = ['', '', 'Twenty', 'Thirty', 'Forty', 'Fifty', 'Sixty', 'Seventy', 'Eighty', 'Ninety'];
  final thousands = ['', 'Thousand', 'Lakh', 'Crore'];

  String result = '';
  int num = number;
  int thousandIndex = 0;

  while (num > 0) {
    int group = num % 1000;
    if (group != 0) {
      String groupWords = _convertGroup(group, ones, teens, tens);
      if (thousandIndex > 0) {
        groupWords += ' ${thousands[thousandIndex]}';
      }
      result = groupWords + (result.isEmpty ? '' : ' $result');
    }
    num ~/= 1000;
    thousandIndex++;
  }

  return result;
}