集合 实现双色球案例

import java.util.*;

/**
 * @author Mxhlin
 * @Email [email protected]
 * @Date 2022/09/19/21:30
 * @Version
 * @Description 双色球案例
 */
public class Demo {
    public static void main(String[] args) {
        Random ra = new Random();
        int blue = ra.nextInt(16) + 1;
        Set<Integer> red = new HashSet<>();
        while (red.size() < 6)
            red.add(ra.nextInt(33)+1);
        System.out.println(blue);
        System.out.println(red);
        ArrayList<Integer> list = new ArrayList<>(red);
        list.sort(Comparator.comparingInt(a -> a));
        list.add(blue);
        System.out.println(list);
    }
}