如何删掉String数组中的值？

Question

import java.util.*;

public class ruko {
    public static void main(String[] args) {

        Map <String,String>  map = new HashMap<>();
        map.put("I","我");
        map.put("am","是（第一人称）");
        map.put("aah","啊");
        map.put("hello","你好");
        map.put("hi","嗨");
        map.put("ooh","嗬");
        map.put("goodbye","再见");
        map.put("bye-bye","拜拜");
        map.put("are","是（第二人称）");
        map.put("good","好的");
        map.put("morning","上午");
        map.put("fine","健康");
        map.put("thank","谢谢");
        map.put("you","你，你们");
        map.put("Ms","女士");
        map.put("boy","男孩");
        map.put("girl","女孩");
        map.put("whoops","喔哟");
        map.put("and","和");
        map.put("too","也");
        map.put("haha","哈哈");
        map.put("what","什么");
        map.put("is","是（第三人称）");
        map.put("your","你的，你们的");
        map.put("name","名字");
        map.put("please","请");
        map.put("afternoon","下午");
        map.put("Mr","先生");
        map.put("point","指");
        map.put("to","向");
        map.put("the","这个，那个");
        map.put("door","门");
        map.put("sit","坐");
        map.put("down","下，向下");
        map.put("stand","站");
        map.put("up","上，向上");
        map.put("window","窗户");
        map.put("blackbord","黑板");
        map.put("bird","鸟");
        map.put("tweet","鸟叫声");
        map.put("desk","桌子");
        map.put("chair","椅子");
        map.put("it","它");
        map.put("red","红色");
        map.put("look","看");
        map.put("wow","哇");
        map.put("yellow","黄色");
        map.put("blue","蓝色");
        map.put("a","一个");
        map.put("chameleon","变色龙");
        map.put("my","我的");
        map.put("panda","熊猫");
        map.put("now","现在");
        map.put("green","绿色");
        map.put("black","黑色");
        map.put("dog","狗");
        map.put("cat","猫");
        map.put("cap","帽子");
        map.put("one","一");
        map.put("two","二");
        map.put("three","三");
        map.put("four","四");
        map.put("five","五");
        map.put("six","六");
        map.put("seven","七");
        map.put("eight","八");
        map.put("nine","九");
        map.put("oh","哦");
        map.put("ten","十");
        map.put("eleven","十一");
        map.put("twelve","十二");

        Scanner scan = new Scanner(System.in);
        Random rand = new Random();
        System.out.println("欢迎使用外研版英语单词记忆测评系统V0.1.0");
        System.out.println("‘1’为三年级上册");
        System.out.print("请输入：");
        String a = scan.next();
        int fan = 100;
        int go = 1;

        String[] tup1 = {"I","am","aah","hello","hi","ooh","goodbye","bye-bye","are","good","morning",
                "fine","thank","you","Ms","boy","girl","whoops","and","too","haha","what",
                "is","your","name","please","afternoon","Mr","point","to","the","door","sit",
                "down","stand","up","window","blackbord","bird","tweet","desk","chair","it",
                "red","look","wow","yellow","blue","a","chameleon","my","panda","now","green",
                "black","dog","cat","cap","one","two","three","four","five","six","seven",
                "eight","nine","oh","ten","eleven","twelve"};

        if (a.equals("1")) {
            for (;go <= 100;go += 1) {
                String n = tup1[(int) Math.floor(Math.random()*tup1.length)];
                Object c = map.get(n);
                System.out.print("请输入" + c + "的英语意思：");
                String b = scan.next();
                if (b.equals(n)) {
                    System.out.println("答对了！");
                } else {
                    System.out.println("答错了！");
                    System.out.println("正确答案是：" + n);
                    fan -= 1;
                    System.out.println("得分:" + fan);
                }
            }
            String[] tup2 = {"I","am","aah","hello","hi","ooh","goodbye","bye-bye","are","good","morning",
                    "fine","thank","you","Ms","boy","girl","whoops","and","too","haha","what",
                    "is","your","name","please","afternoon","Mr","point","to","the","door","sit",
                    "down","stand","up","window","blackbord","bird","tweet","desk","chair","it",
                    "red","look","wow","yellow","blue","a","chameleon","my","panda","now","green",
                    "black","dog","cat","cap","one","two","three","four","five","six","seven",
                    "eight","nine","oh","ten","eleven","twelve"};
        tup1 = tup2;
        }
        if (!a.equals("1") && !a.equals("2") && !a.equals("3") && !a.equals("4") && !a.equals("5") && !a.equals("6") && !a.equals("7") && !a.equals("8")) {
            System.out.println("错误！");
        }
    }
}

按这样出题会出现重复的题目，我就想删掉出过的题目在tup1数组中的值，出完题后将tup2数组中的内容插回tup1。
但是一直不知道怎么删掉。

Answer 1

可以考虑使用 List 来实现：