题目描述
题目：输入数字n，按顺序打印从1到最大的n位十进制数。比如输入3，则打印出1,2,3一直到最大的3位数999。
func Print1ToMaxOfDigits(n int) {
if n <= 0 {
return
}
number := make([]int, n)
for i := 0; i < 10; i++ {
number[0] = i
print1ToMaxOfDigitsRecursively(number, n, 0)
}
}
func print1ToMaxOfDigitsRecursively(number []int, length int, index int) {
if index == length-1 {
printNumber(number)
return
}
for i := 0; i < 10; i++ {
number[index+1] = i
print1ToMaxOfDigitsRecursively(number, length, index+1)
}
}
func printNumber(number []int) {
var isBeginning0 = true
length := len(number)
for i := 0; i < length; i++ {
if isBeginning0 && number[i] != 0 {
isBeginning0 = false
}
if !isBeginning0 {
fmt.Printf("%d", number[i])
if i == length-1 {
fmt.Println()
}
}
}
}
