Java8数组Integer[]转int[]数组

通过代码把下面的数组里的数字从大到小输出

Intger[] i= {12,31,56,91,9,812,881,31}

public static void main(String[] args) {
        Integer[] integers= {12,31,56,91,9,812,881,31};

        int[] ints = Arrays.stream(integers).mapToInt(Integer::intValue).toArray();

        System.out.println("得到当前转换后的数字：");
        for (int i = 0; i < ints.length -1; i++) {
            System.out.print(ints[i] + "  ");
            for (int j = 0; j < ints.length-1-i; j++) {
                if(ints[j] < ints[j+1]){
                    int temp = ints[j];
                    ints[j] = ints[j + 1];
                    ints[j + 1] = temp;
                }
            }
        }

        System.out.println("\n从大到小输出");
        for (int i = 0; i < ints.length; i++) {
            System.out.print(ints[i] + "  ");
        }
}