romanNumeralsRefactored

RomanNumerals.java

import java.util.Map;

public class RomanNumerals {

    private static final Map<Integer, String> ROMAN_NUMERALS = Map.of(
            1, "I",
            5, "V",
            10, "X",
            50, "L",
            100, "C",
            500, "D",
            1000, "M"
    );

    public static String convert(int number) {
        return ROMAN_NUMERALS.get(number);
    }
}