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] + ","); } }
大家可以用Integer数组试试,代码要少点:
// 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);