Практика5.5

package com.company;

import java.util.Random;
import java.util.TreeSet;

public class Main {

    static TreeSet union(TreeSet one, TreeSet two)
    {
        TreeSet<Integer> set3 = new TreeSet<>();
        for (Object element : one)
        {
            set3.add((Integer) element);
        }
        for (Object element : two)
        {
            set3.add((Integer) element);
        }
        return set3;
    }

    static TreeSet intersect(TreeSet one, TreeSet two) {
        TreeSet<Integer> set3 = new TreeSet<>();
        for (Object element : one) {
            for (Object object : two) {
                if (element == object) {
                    set3.add((Integer) element);
                    break;
                }
            }
        }
        return set3;
    }



    public static void main(String[] args) {
        Random randomizer = new Random();
        TreeSet<Integer> set1 = new TreeSet<>();
        TreeSet<Integer> set2 = new TreeSet<>();

        for (int i=0; i<10; i++)
        {
            set1.add(randomizer.nextInt(100));
            set2.add(randomizer.nextInt(100));
        }

        System.out.println(set1);
        System.out.println(set2);
        System.out.println(union(set1, set2));
        System.out.println(intersect(set1, set2));
    }
}