/// 对数字或金额的格式化
class NumberFormatUtil {

  /// 格式化金额，每三位数分割一个逗号，1000 -> 1,000
 static String formatMoney(int number) {
    List<String> parts = [];
    String numberString = number.toString();

    while (numberString.length > 3) {
      parts.add(numberString.substring(numberString.length - 3));
      numberString = numberString.substring(0, numberString.length - 3);
    }

    parts.add(numberString);

    return parts.reversed.join(",");
  }

}