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48 lines
776 B
48 lines
776 B
2 years ago
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## descendcombn
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### Instructions
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- Write a function that prints all possible combinations of `n` different digits in descending order.
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- n will be defined as : 10 > n > 0
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Below are the references for the **printing format** expected.
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- (for n = 1) '9, 8, ..., 3, 2, 1, 0'
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- (for n = 3) '987, 986, ..., 020, 019, 018, 017, 016, 015, 014, 013, 012'
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### Expected function
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```go
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func DescendCombN(n int) {
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}
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```
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### Usage
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Here is a possible program to test your function :
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```go
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package main
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import "piscine"
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func main() {
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piscine.DescendCombN(9)
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piscine.DescendCombN(3)
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piscine.DescendCombN(1)
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}
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```
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And its output :
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```console
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$ go run .
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9, 8, 7, 6, 5, 4, 3, 2, 1, 0
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987, 986, ..., 018, 017, 016, 015, 014, 013, 012
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987654321, ..., 976543210, 876543210
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$
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```
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