leetcode12数字转换成罗马数字

public class Main{
    public static String intToRoman(int num) {
        StringBuilder  res = new StringBuilder();
        int[] values = {1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1};
        String[] strs = {"M", "CM", "D", "CD", "C", "XC", "L", "XL", "X", "IX","V", "IV", "I"};
        for (int i = 0; i < values.length; i++) {
			while(num >= values[i]) {
				num -= values[i];
				res.append(strs[i]);
			}
		}
        return res.toString();
    }
    public static void main(String[] args) {
		System.out.println(intToRoman(43));
	}
}