把数组排成最小的数

import java.util.*;

public class Solution {
    public String PrintMinNumber(int [] numbers) {
        for(int i=0;i<numbers.length;i++){
            for(int j=numbers.length-1;j>i;j--){
                if(compare(numbers[j-1],numbers[j])>0){
                    int temp=numbers[j-1];
                    numbers[j-1]=numbers[j];
                    numbers[j]=temp;
                }
            }
        }
        String ans="";
        for(int i=0;i<numbers.length;i++){
            ans+=numbers[i];
        }
        return ans;
    }
    public int compare(int int1,int int2){
        String str1=int1+""+int2;
        String str2=int2+""+int1;
        return str1.compareTo(str2);
    }
}

 Collections.sort(list, new Comparator<Integer>(){
  
  public int compare(Integer str1,Integer str2){
   String s1=str1+""+str2;
   String s2=str2+""+str1;
         return s1.compareTo(s2);
     }
  });