package main

func digits(n uint) []uint8 {
	if n == 0 {
		return []uint8{0}
	}
	var digits []uint8
	for ; n != 0; n /= 10 {
		digits = append(digits, uint8(n%10))
	}
	return digits
}

func number(digits []uint8) uint {
	var n uint
	base := uint(1)
	for _, d := range digits {
		n += uint(d) * base
		base *= 10
	}
	return n
}