Sha256: aa6ea4dbd963b7f27054770fde1e706ac75d56028c4b8fc3e835c266ffbc07e3
Contents?: true
Size: 704 Bytes
Versions: 89
Compression:
Stored size: 704 Bytes
Contents
package romannumerals
import (
"bytes"
"fmt"
)
const testVersion = 3
type arabicToRoman struct {
arabic int
roman string
}
func ToRomanNumeral(input int) (string, error) {
buffer := bytes.NewBufferString("")
if input <= 0 || input >= 4000 {
return "", fmt.Errorf("the number %d is undefined in the roman numeral system", input)
}
mappings := []arabicToRoman{
{1000, "M"},
{900, "CM"},
{500, "D"},
{400, "CD"},
{100, "C"},
{90, "XC"},
{50, "L"},
{40, "XL"},
{10, "X"},
{9, "IX"},
{5, "V"},
{4, "IV"},
{1, "I"},
}
for _, m := range mappings {
for input >= m.arabic {
buffer.WriteString(m.roman)
input -= m.arabic
}
}
return buffer.String(), nil
}
Version data entries
89 entries across 89 versions & 1 rubygems