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
        //重载排序
        if(numbers == null || numbers.length == 0) return "";
        String[] nums = new String[numbers.length];
        for(int i = 0; i < numbers.length; i ++){
            nums[i] = numbers[i] + "";
        }
        Arrays.sort(nums, new Comparator<String>(){
            public int compare(String s1, String s2){
                return (s1 + s2).compareTo((s2 + s1));
            }
        });
        String res = new String();
        for(int i = 0; i < nums.length; i ++){
            res += nums[i];
        }
        return res;
    }
}