1  package piscine
 2  
 3  import "github.com/01-edu/z01"
 4  
 5  func PrintNbrBase(nbr int, base string) {
 6  	if !isValidBase(base) {
 7  		z01.PrintRune('N')
 8  		z01.PrintRune('V')
 9  		return
10  	}
11  	if nbr < 0 {
12  		z01.PrintRune('-')       // let's print the minus sign
13  		PrintNbrBase(-nbr, base) // then recall the function with the positive value
14  		return
15  	}
16  
17  	if nbr >= len(base) { // if the number is bigger than the base length
18  		PrintNbrBase(nbr/len(base), base) // call the function with the number divided by the base length
19  	}
20  
21  	z01.PrintRune(rune(base[nbr%len(base)])) // print the rune at the index of the remainder of the number divided by the base length
22  }
23  
24  func isValidBase(base string) bool {
25  	if len(base) < 2 {
26  		return false
27  	}
28  
29  	checked := ""
30  
31  	for _, b := range base {
32  		if b == '-' || b == '+' {
33  			return false
34  		}
35  		for _, c := range checked {
36  			if c == b {
37  				return false
38  			}
39  		}
40  		checked += string(b)
41  	}
42  	return true
43  }