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## putnbrbase
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### Instructions
Write a function that prints an `int` in a `string` base passed in parameters.
If the base is not valid, the function prints `NV` (Not Valid):
Validity rules for a base :
- A base must contain at least 2 characters.
- Each character of a base must be unique.
- A base should not contain `+` or `-` characters.
The function has to manage negative numbers. (as shown in the example)
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### Expected function
```go
func PrintNbrBase(nbr int, base string) {
}
```
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### Usage
Here is a possible program to test your function :
```go
package main
import (
"fmt"
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"github.com/01-edu/z01"
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piscine ".."
)
func main() {
piscine.PrintNbrBase(125, "0123456789")
z01.PrintRune('\n')
piscine.PrintNbrBase(-125, "01")
z01.PrintRune('\n')
piscine.PrintNbrBase(125, "0123456789ABCDEF")
z01.PrintRune('\n')
piscine.PrintNbrBase(-125, "choumi")
z01.PrintRune('\n')
piscine.PrintNbrBase(125, "aa")
z01.PrintRune('\n')
}
```
And its output :
```console
student@ubuntu:~/[[ROOT]]/test$ go build
student@ubuntu:~/[[ROOT]]/test$ ./test
125
-1111101
7D
-uoi
NV
student@ubuntu:~/[[ROOT]]/test$
```