Strange Order

import java.util.*;
import java.util.Arrays;

public class Main {

    public static void main(String[] args) {


        Scanner sc = new Scanner(System.in);
        String[] listStr = sc.nextLine().split(",");
        int length = listStr.length;
        int[] array = new int[length];

        for (int i = 0; i < length; i++) {
            array[i] = Integer.parseInt(listStr[i]);
        }
        StringBuilder avg=new StringBuilder();
        StringBuilder below=new StringBuilder();
        StringBuilder above=new StringBuilder();


        for (int i = 0; i < length; i++) {

            if (array[i] < 0) {
                below = below.append(array[i]);
                below=below.append(",");

            }
            if (array[i] > 0) {
                above = above.append(array[i]);
                above=above.append(",");
            }
            if (array[i] == 0) {
                avg = avg.append(array[i]);
                avg=avg.append(",");
            }

        }
        System.out.print(below);
        System.out.print(avg);
        System.out.println(above.substring(0, above.length()-1));

    }
}