题解 | #把数组排成最小的数#

import java.util.ArrayList;
import java.lang.*;
import java.util.*;
public class Solution {
    public String PrintMinNumber(int [] numbers) {
        if(numbers.length==0||numbers==null) return "";
       String[] s =new String[numbers.length];
        for(int i=0;i<numbers.length;i++){
            s[i]=String.valueOf(numbers[i]);
        }
        Arrays.sort(s,(s1,s2)->(s1+s2).compareTo(s2+s1));
        StringBuilder sb = new StringBuilder();
        for(String ss:s){
            sb.append(ss);
        }
        return sb.toString();
    }
}