lavos/cap3/ex7.go

package cap3

// Ex7 低位到高位输出正整数的数字
func Ex7(num uint64, algoType AlgoType, callback func(digit uint8)) {
	switch algoType {
	case AlgoTypeRecursion:
		Ex7Recursion(num, callback)
	default:
		Ex7NoneRecursion(num, callback)
	}
}

func Ex7Recursion(num uint64, callback func(digit uint8)) {
	if num < 10 {
		callback(uint8(num))
	} else {
		callback(uint8(num % 10))
		Ex7Recursion(num/10, callback)
	}
}

func Ex7NoneRecursion(num uint64, callback func(digit uint8)) {
	for i := num; i >= 1; i /= 10 {
		callback(uint8(i % 10))
	}
}