func NewLen(length int) (code string) {
	codeByte:=RandomDigits(length)
	for _, value := range codeByte {
		code+=fmt.Sprintf("%d",value)
	}
	return
}
// NewLen is just like New, but accepts length of a captcha solution as the
// argument.
NewLen is just like New, but accepts length of a captcha solution as the
argument.
// NewLen is just like New but accepts length of a captcha solution as the // argument .
func NewLen(length int) (code string) {
	codeByte:=RandomDigits(length)
	for _, value := range codeByte {
		code+=fmt.Sprintf("%d",value)
	}
	return
}
func NewLen ( length int ) ( code string ) { codeByte := RandomDigits ( length ) for _ , value := range codeByte { code += fmt . Sprintf ( " " , value ) } return }
NewLen is just like New, but accepts length of a captcha solution as the
argument.
NewLen is just like New but accepts length of a captcha solution as the argument .