code: private static String removeNumberFlag(String number) {
  		// 去掉类型标识的结尾
  		final int lastPos = number.length() - 1;
  		final char lastCharUpper = Character.toUpperCase(number.charAt(lastPos));
  		if ('D' == lastCharUpper || 'L' == lastCharUpper || 'F' == lastCharUpper) {
  			number = StrUtil.subPre(number, lastPos);
  		}
  		return number;
  	}
docs: 去掉数字尾部的数字标识，例如12D，44.0F，22L中的最后一个字母
  
  @param number 数字字符串
  @return 去掉标识的字符串