剑指JZ32_把数组排成最小的数.

public String PrintMinNumber(int[] numbers) {
        String[] strArr = new String[numbers.length];
        //将int数组转换为String数组
        for (int i = 0; i < numbers.length; i++) {
            strArr[i] = String.valueOf(numbers[i]);
        }
        Arrays.sort(strArr, (x, y) -> (x + y).compareTo(y + x));
        StringBuilder sb = new StringBuilder();
        for (String s : strArr){
            sb.append(s);
        }
        return sb.toString();
    }