如何从list<String>中删除除最后一个以外的所有相同数据？带有颤动

import java.util.*;

public class Main {
    public static void main(String[] args) {
        List<String> list = new ArrayList<>(Arrays.asList("A", "B", "C", "A", "D", "A"));
        removeDuplicates(list);
        System.out.println(list);
    }

    public static void removeDuplicates(List<String> list) {
        Set<String> uniqueSet = new HashSet<>();
        ListIterator<String> iterator = list.listIterator(list.size());

        while (iterator.hasPrevious()) {
            String element = iterator.previous();
            if (uniqueSet.contains(element)) {
                iterator.remove();
            } else {
                uniqueSet.add(element);
            }
        }
    }
}