用 java 语言获取 1--N 的不重复随机数

import java.util.ArrayList;
import java.util.List;
import java.util.Random;

public class H {
    public static void main(String args[]) {
        int N = 10;
        List<Integer> list = new ArrayList<Integer>();
        for (int i = 0; i < N; i++) {
            list.add(i + 1);
        }
        int count = N;
        int items[] = new int[N];
        for (int i = 0; i < N; i++) {
            // 
            int randomInt = new Random().nextInt(count);
            items[i] = list.get(randomInt);
            list.remove(randomInt);
            count--;
            System.out.println(items[i]);
        }
    }
}