code: private static String transThree(String s) {
  		String value = "";
  		if (s.startsWith("0")) {// 是否小於100
  			value = transTwo(s.substring(1));
  		} else if (s.substring(1).equals("00")) {// 是否被100整除
  			value = parseFirst(s.substring(0, 1)) + " HUNDRED";
  		} else {
  			value = parseFirst(s.substring(0, 1)) + " HUNDRED AND " + transTwo(s.substring(1));
  		}
  		return value;
  	}
docs: s.length = 3