Creates the largest possible Integer using the given Integers

Create largest possible number

package testproj.uebung;

import java.util.Arrays;

public class Problem4 {
    public static void main(String[] args) throws Exception {
        System.out.println(arrageLargest(new Integer[] { 501, 50, 56, 12, 1, 19 }));
    }

    public static String arrageLargest(Integer[] values) {
        StringBuilder result = new StringBuilder();
        Arrays.sort(values, ((o1, o2) -> {
            return compare(o1, o2, 0);
        }));
        Arrays.asList(values).forEach(v -> result.append(v));
        return result.toString();
    }

    private static int compare(int o1, int o2, int recusionIndex) {
        if (o1 == o2) return 0;
        int length = String.valueOf(o1).length() > String.valueOf(o2).length() ? String.valueOf(o1).length() : String.valueOf(o2).length();
        if (recusionIndex > length) return 0;
        if (String.valueOf(o1).charAt(recusionIndex % String.valueOf(o1).length()) > String.valueOf(o2).charAt(recusionIndex % String.valueOf(o2).length())) {
            return -1;
        } else if (String.valueOf(o1).charAt(recusionIndex % String.valueOf(o1).length()) < String.valueOf(o2).charAt(recusionIndex % String.valueOf(o2).length())) {
            return 1;
        } else {
            return compare(o1, o2, recusionIndex + 1);
        }
    }
}