【Java】创建一个不重复的集合

public class list {
 
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		LinkedList<Integer> list=new LinkedList<Integer>();
		//创建一个不重复的长度为10的集合
		Random ra = new Random();
		int count=0;
		for (int i = 0; i < 10; i++) {
			int num =ra.nextInt(10)+1;
			if (!list.contains(num)) {//判断是否有某元素
				list.add(num);
				System.out.print(num+" ");
			} else {
				i--;
			}
			count++;
		}
		System.out.println("\n随机次数："+count);
	}
}