作业五 | 结对项目-四则运算 “软件”之升级版

public int generateCorrectAnswer(List<String> operators, List<Integer> operations) {
        //遍历运算符容器，完成乘除运算
        for (int i = 0; i < operators.size(); i++) {
            String operator = operators.get(i);
            if (operator.equals("*") || operator.equals("/")) {
                operators.remove(i);                    //乘除符号将其从集合中移除
                int operateLeft = operations.remove(i);      //拿运算符左侧的数字
                int operateRight = operations.remove(i);     //拿运算符右侧的数字
                if (operator.equals("*"))
                    operations.add(i, operateLeft * operateRight);
                else
                    operations.add(i, operateLeft / operateRight);
                i--;  //运算符容器的指针回到原来的位置,防止跳过下一个运算符
            }
        }

        //遍历运算符容器，完成加减运算，当运算符容器为空时，运算结束
        while (!operators.isEmpty()) {
            String operator = operators.remove(0);
            int operateLeft = operations.remove(0);
            int operateRight = operations.remove(0);
            if (operator.equals("+"))
                operateLeft = operateLeft + operateRight;
            else
                operateLeft = operateLeft - operateRight;
            operations.add(0, operateLeft);
        }
        return operations.get(0);
    }

//随机产生的阶乘数字
    public int generateFormula() {
        Random random = new Random();
        int num = random.nextInt(19)+1;
        //计算阶乘结果
        int result = 1;
        for (int i = 1; i <= num; i++) {
            result*= i;
        }
        correctAnswerList.add(String.valueOf(result));
        return num;
    }

private void markingPapers() {
        if(fourCalculation == true) {
            for (int i = 0; i < answerArea.length; i++) {
                //System.out.println("answer:"+fourCalculations.correctAnswerList.get(i));
                //System.out.println("input:"+answerArea[i].getText());
                if (answerArea[i].getText().equals(fourCalculations.correctAnswerList.get(i))) {
                    judgeLabel[i].setImageUrl("./FourOperations/src/main/img/right.png");   // 正确，显示“√”图标
                    numT++;
                }
                else {
                    //answerArea[i].setText("错");
                    judgeLabel[i].setImageUrl("./FourOperations/src/main/img/error.png");   // 错误，显示“×”图标
                    answerArea[i].setText(fourCalculations.correctAnswerList.get(i));        //将用户输入的错误答案修改为正确答案
                    numF++;
                }
            }
        }
        else{
            for (int i = 0; i < answerArea.length; i++) {
                //System.out.println("answer:"+fourCalculations.correctAnswerList.get(i));
                //System.out.println("input:"+answerArea[i].getText());
                if (answerArea[i].getText().equals(factorialCalculations.correctAnswerList.get(i))) {
                    judgeLabel[i].setImageUrl("./FourOperations/src/main/img/right.png");   // 正确，显示“√”图标
                    numT++;
                }
                else {
                    //answerArea[i].setText("错");
                    judgeLabel[i].setImageUrl("./FourOperations/src/main/img/error.png");   // 错误，显示“×”图标
                    answerArea[i].setText(factorialCalculations.correctAnswerList.get(i));    //将用户输入的错误答案修改为正确答案
                    numF++;
                }
            }
        }
    }

public void run() {      //  完成时间计时
        int second = 0;
        int minute = 0;
        String time;
        timeLabel.setText("用时 00:00");    // 初始化用时
        while (true) {
            try {
                Thread.sleep(1000);   //  按时间设置
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            second++;
            if (second == 60) {
                second = 0;
                minute++;
            }
            if (minute < 10) {
                time = "用时 " + "0" + minute + ":";
            } else {
                time = "用时 " + minute + ":";
            }
            if (second < 10) {
                time = time + "0" + second;
            } else {
                time = time + second;
            }
            if (minute == 2) {      //  如果时间到120s，用户还未答完题，提示信息
                JOptionPane.showMessageDialog(this, "时间已到，不能答题！");
                submit();
                return;
            }
            timeLabel.setText(time);
        }
    }

//  背景色按钮
        JButton changeButton = new JButton("背景色");
        changeButton.setBounds(startX, startY+step*5, width, height);
        changeButton.addMouseListener(new MouseListener() {
            @Override
            public void mouseClicked(MouseEvent e) {
                Color color = JColorChooser.showDialog(outPanel, "背景色", outPanel.getBackground());    // 弹出颜色界面供用户自由选择背景色
                if (color != null) {
                   outPanel.setBackground(color);
                }
            }