如何使用迭代器next()方法生成LinkedSet的幂集

import java.util.LinkedHashSet;
import java.util.Iterator;
import java.util.Set;

public class LinkedHashSetPowerSetExample {
    public static void main(String[] args) {
        Set<Integer> set = new LinkedHashSet<>();
        set.add(1);
        set.add(2);
        set.add(3);

        Set<Set<Integer>> powerSet = generatePowerSet(set);
        printPowerSet(powerSet);
    }

    public static Set<Set<Integer>> generatePowerSet(Set<Integer> set) {
        Set<Set<Integer>> powerSet = new LinkedHashSet<>();
        powerSet.add(new LinkedHashSet<>()); // 添加空集

        for (Integer element : set) {
            Set<Set<Integer>> newSubsets = new LinkedHashSet<>();
            for (Set<Integer> subset : powerSet) {
                Set<Integer> newSubset = new LinkedHashSet<>(subset);
                newSubset.add(element);
                newSubsets.add(newSubset);
            }
            powerSet.addAll(newSubsets);
        }
        return powerSet;
    }

    public static void printPowerSet(Set<Set<Integer>> powerSet) {
        Iterator<Set<Integer>> iterator = powerSet.iterator();
        while (iterator.hasNext()) {
            Set<Integer> subset = iterator.next();
            System.out.println(subset);
        }
    }
}