func zfillInt(src int, z int) string {
	if z < 2 {
		return strconv.Itoa(src)
	}
	return fmt.Sprintf(fmt.Sprintf("%%0%dd", z), src)
}
func zfillInt(src int, z int) string {
	if z < 2 {
		return strconv.Itoa(src)
	}
	return fmt.Sprintf(fmt.Sprintf("%%0%dd", z), src)
}
func zfillInt ( src int , z int ) string { if z < 2 { return strconv . Itoa ( src ) } return fmt . Sprintf ( fmt . Sprintf ( " " , z ) , src ) }
// Left pads an int to a given with, using "0".
// If the string begins with a negative "-" character, then
// padding is inserted between the "-" and the remaining characters.
Left pads an int to a given with using 0 . If the string begins with a negative - character then padding is inserted between the - and the remaining characters .