题解 | #把数组排成最小的数#

import java.util.*;


public class Solution {
    /**
     * 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
     *
     * 
     * @param numbers int整型一维数组 
     * @return string字符串
     */
    public String PrintMinNumber (int[] numbers) {
        // write code here
        StringBuilder strBuilder=new StringBuilder();
        int len=numbers.length;
        String[] strArr=new String[len+1];
        for(int i=0;i<len;i++){
            strArr[i]=String.valueOf(numbers[i]);
        }
        Arrays.sort(strArr,new Comparator<String>(){
            public int compare(String a,String b){
                return (a+b).compareTo(b+a);
            }
        });
        for(int i=0;i<len;i++){
            strBuilder.append(strArr[i]);
        }
        return new String(strBuilder);
    }
}