public  static void main(String[] args){

        //创建一个int数组，长度为100，

        int n = 100;

        int[] arrayInt = new int[n];

        Random random = new Random();

        ArrayList myList = new ArrayList();

        while(myList.size() < 100){

            //随机函数生成0-100的整数

            int num = random.nextInt(101);

            //myList不包含则添加元素 去重

            if(!myList.contains(num) && num >0){

                myList.add(num);

            }

        }

        myList.sort(null);

        System.out.println(myList.size() + ",");

        //myList数组值赋值给int数组

        for(int i=0;i<100;i++){

            arrayInt[i] = (int)myList.get(i);

            System.out.println(arrayInt[i] + ",");

        }

    }

//    ArrayList<Integer> myList = new ArrayList<Integer>();

//    Integer[] b = new Integer[myList.size()];//当泛型为Integer时，需要

//    arrayInt = (Integer[])myList.toArray(b);