diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..f68d109
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,29 @@
+### IntelliJ IDEA ###
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store
\ No newline at end of file
diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..10b731c
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,5 @@
+# 默认忽略的文件
+/shelf/
+/workspace.xml
+# 基于编辑器的 HTTP 客户端请求
+/httpRequests/
diff --git a/.idea/.name b/.idea/.name
new file mode 100644
index 0000000..2b3e571
--- /dev/null
+++ b/.idea/.name
@@ -0,0 +1 @@
+untitled111.iml
\ No newline at end of file
diff --git a/.idea/artifacts/untitled111_jar.xml b/.idea/artifacts/untitled111_jar.xml
new file mode 100644
index 0000000..5ef401c
--- /dev/null
+++ b/.idea/artifacts/untitled111_jar.xml
@@ -0,0 +1,21 @@
+
+
+ $PROJECT_DIR$/out/artifacts/untitled111_jar
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..2bfdeda
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,6 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..5116208
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..94a25f7
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/src/ExamManager.java b/src/ExamManager.java
new file mode 100644
index 0000000..986ecfc
--- /dev/null
+++ b/src/ExamManager.java
@@ -0,0 +1,24 @@
+import java.util.*;
+
+public class ExamManager {
+ private QuestionGenerator generator = new QuestionGenerator();
+ private Set history = new HashSet<>();
+ private String type;
+
+ public ExamManager(String type){
+ this.type = type;
+ }
+
+ public List generateExam(int numQuestions){
+ List questions = new ArrayList<>();
+ for(int i=0;i 密码
+ private Map userDatabase = new HashMap<>();
+ // 存储用户名 -> 邮箱 映射
+ private Map usernameToEmail = new HashMap<>();
+ // 存储邮箱 -> 用户名 映射
+ private Map emailToUsername = new HashMap<>();
+
+ private Map currentUser = new HashMap<>(); // 存储当前登录用户信息
+ private List currentExam = new ArrayList<>();
+ private int currentIndex = 0;
+ private int score = 0;
+ private ExamManager examManager;
+ private QuestionGenerator questionGenerator = new QuestionGenerator();
+
+ public static void main(String[] args) {
+ launch(args);
+ }
+
+ @Override
+ public void start(Stage stage) {
+ primaryStage = stage;
+ primaryStage.setTitle("小初高数学学习软件");
+ primaryStage.setScene(buildLoginScene());
+ primaryStage.show();
+ }
+
+ // 登录界面
+ private Scene buildLoginScene() {
+ VBox root = new VBox(10);
+ root.setStyle("-fx-padding: 20;");
+ Label titleLabel = new Label("数学学习软件 - 登录");
+ titleLabel.setStyle("-fx-font-size: 16; -fx-font-weight: bold;");
+
+ TextField loginField = new TextField();
+ loginField.setPromptText("请输入邮箱或用户名");
+ PasswordField passwordField = new PasswordField();
+ passwordField.setPromptText("请输入密码");
+
+ Button loginBtn = new Button("登录");
+ Button registerBtn = new Button("前往注册");
+ Label infoLabel = new Label();
+ Label tipLabel = new Label("提示：可以使用邮箱或用户名登录");
+ tipLabel.setStyle("-fx-font-size: 10; -fx-text-fill: gray;");
+
+ // 登录按钮事件
+ loginBtn.setOnAction(e -> {
+ String loginInput = loginField.getText().trim();
+ String password = passwordField.getText();
+
+ if (loginInput.isEmpty() || password.isEmpty()) {
+ infoLabel.setText("请输入登录信息和密码");
+ return;
+ }
+
+ String email = getEmailFromLoginInput(loginInput);
+ if (email == null) {
+ infoLabel.setText("用户不存在");
+ return;
+ }
+
+ if (!userDatabase.get(email).equals(password)) {
+ infoLabel.setText("密码错误");
+ return;
+ }
+
+ // 登录成功
+ currentUser.put("email", email);
+ currentUser.put("username", emailToUsername.get(email));
+ infoLabel.setText("登录成功！欢迎 " + emailToUsername.get(email));
+ primaryStage.setScene(buildLevelSelectionScene());
+ });
+
+ // 注册按钮事件
+ registerBtn.setOnAction(e -> {
+ primaryStage.setScene(buildRegisterScene());
+ });
+
+ root.getChildren().addAll(titleLabel, loginField, passwordField, tipLabel, loginBtn, registerBtn, infoLabel);
+ return new Scene(root, 400, 300);
+ }
+
+ // 根据登录输入获取邮箱
+ private String getEmailFromLoginInput(String loginInput) {
+ // 如果输入包含@，认为是邮箱
+ if (loginInput.contains("@")) {
+ return userDatabase.containsKey(loginInput) ? loginInput : null;
+ } else {
+ // 否则认为是用户名
+ return usernameToEmail.get(loginInput);
+ }
+ }
+
+ // 注册界面
+ private Scene buildRegisterScene() {
+ VBox root = new VBox(10);
+ root.setStyle("-fx-padding: 20;");
+ Label titleLabel = new Label("用户注册");
+ titleLabel.setStyle("-fx-font-size: 16; -fx-font-weight: bold;");
+
+ TextField usernameField = new TextField();
+ usernameField.setPromptText("设置用户名 (4-10位字符)");
+ TextField emailField = new TextField();
+ emailField.setPromptText("请输入邮箱");
+ Button sendCodeBtn = new Button("发送验证码");
+ TextField codeField = new TextField();
+ codeField.setPromptText("请输入验证码");
+ PasswordField passwordField = new PasswordField();
+ passwordField.setPromptText("设置密码 (6-10位，含大小写字母和数字)");
+ PasswordField confirmPasswordField = new PasswordField();
+ confirmPasswordField.setPromptText("确认密码");
+ Button registerBtn = new Button("注册");
+ Button backBtn = new Button("返回登录");
+ Label infoLabel = new Label();
+
+ sendCodeBtn.setOnAction(e -> {
+ String username = usernameField.getText().trim();
+ String email = emailField.getText().trim();
+
+ // 验证用户名
+ if (!isValidUsername(username)) {
+ infoLabel.setText("用户名必须4-10位，只能包含字母、数字和下划线");
+ return;
+ }
+
+ if (usernameToEmail.containsKey(username)) {
+ infoLabel.setText("用户名已存在");
+ return;
+ }
+/*
+ // 使用新的邮箱验证方法
+ if (!isValidEmail(email)) {
+ infoLabel.setText("邮箱格式不正确，请使用有效的邮箱地址");
+ return;
+ }
+*/
+ if (userDatabase.containsKey(email)) {
+ infoLabel.setText("该邮箱已注册");
+ return;
+ }
+
+ generatedCode = String.format("%06d", new Random().nextInt(999999));
+ infoLabel.setText("验证码发送中...");
+
+ new Thread(() -> {
+ boolean success = mailSender.sendMail(email, "注册验证码", "你的验证码为：" + generatedCode);
+ Platform.runLater(() -> {
+ if (success) {
+ infoLabel.setText("验证码已发送，请查看邮箱");
+ } else {
+ infoLabel.setText("发送失败，请检查邮箱是否正确");
+ }
+ });
+ }).start();
+ });
+
+ registerBtn.setOnAction(e -> {
+ String username = usernameField.getText().trim();
+ String email = emailField.getText().trim();
+ String inputCode = codeField.getText().trim();
+ String pw = passwordField.getText();
+ String pwConfirm = confirmPasswordField.getText();
+
+ if (!isValidUsername(username)) {
+ infoLabel.setText("用户名必须4-10位，只能包含字母、数字和下划线");
+ return;
+ }
+
+ if (usernameToEmail.containsKey(username)) {
+ infoLabel.setText("用户名已存在");
+ return;
+ }
+
+ if (!inputCode.equals(generatedCode)) {
+ infoLabel.setText("验证码错误");
+ } else if (!pw.equals(pwConfirm)) {
+ infoLabel.setText("两次密码不一致");
+ } else if (!isValidPassword(pw)) {
+ infoLabel.setText("密码必须6-10位，包含大小写字母和数字");
+ } else if (userDatabase.containsKey(email)) {
+ infoLabel.setText("邮箱已注册");
+ } else {
+ // 注册用户
+ userDatabase.put(email, pw);
+ usernameToEmail.put(username, email);
+ emailToUsername.put(email, username);
+ infoLabel.setText("注册成功！用户名: " + username);
+ // 注册成功后自动登录
+ currentUser.put("email", email);
+ currentUser.put("username", username);
+ primaryStage.setScene(buildLevelSelectionScene());
+ }
+ });
+
+ backBtn.setOnAction(e -> {
+ primaryStage.setScene(buildLoginScene());
+ });
+
+ root.getChildren().addAll(titleLabel, usernameField, emailField, sendCodeBtn, codeField,
+ passwordField, confirmPasswordField, registerBtn, backBtn, infoLabel);
+ return new Scene(root, 400, 450);
+ }
+
+ // 用户名验证方法
+ private boolean isValidUsername(String username) {
+ if (username.length() < 4 || username.length() > 10) {
+ return false;
+ }
+ // 只能包含字母、数字、下划线
+ return username.matches("^[a-zA-Z0-9_]+$");
+ }
+
+ // 密码验证方法
+ private boolean isValidPassword(String password) {
+ if (password.length() < 6 || password.length() > 10) {
+ return false;
+ }
+ boolean hasUpper = false;
+ boolean hasLower = false;
+ boolean hasDigit = false;
+
+ for (char c : password.toCharArray()) {
+ if (Character.isUpperCase(c)) hasUpper = true;
+ if (Character.isLowerCase(c)) hasLower = true;
+ if (Character.isDigit(c)) hasDigit = true;
+ }
+
+ return hasUpper && hasLower && hasDigit;
+ }
+
+
+
+ // 难度选择界面
+ private Scene buildLevelSelectionScene() {
+ VBox root = new VBox(15);
+ root.setStyle("-fx-padding: 20;");
+
+ // 显示欢迎信息
+ String username = currentUser.get("username");
+ Label welcomeLabel = new Label("欢迎, " + username + "!");
+ welcomeLabel.setStyle("-fx-font-size: 16; -fx-font-weight: bold; -fx-text-fill: #2E8B57;");
+
+ Label label = new Label("请选择难度");
+ label.setStyle("-fx-font-size: 14; -fx-font-weight: bold;");
+
+ Button primaryBtn = new Button("小学");
+ primaryBtn.setStyle("-fx-font-size: 12; -fx-pref-width: 120;");
+ Button juniorBtn = new Button("初中");
+ juniorBtn.setStyle("-fx-font-size: 12; -fx-pref-width: 120;");
+ Button seniorBtn = new Button("高中");
+ seniorBtn.setStyle("-fx-font-size: 12; -fx-pref-width: 120;");
+
+ Button changePwdBtn = new Button("修改密码");
+ changePwdBtn.setStyle("-fx-font-size: 12;");
+ Button logoutBtn = new Button("退出登录");
+ logoutBtn.setStyle("-fx-font-size: 12;");
+
+ primaryBtn.setOnAction(e -> buildExamNumberScene("小学"));
+ juniorBtn.setOnAction(e -> buildExamNumberScene("初中"));
+ seniorBtn.setOnAction(e -> buildExamNumberScene("高中"));
+
+ changePwdBtn.setOnAction(e -> primaryStage.setScene(buildChangePasswordScene()));
+ logoutBtn.setOnAction(e -> {
+ currentUser.clear();
+ primaryStage.setScene(buildLoginScene());
+ });
+
+ VBox buttonBox = new VBox(10, primaryBtn, juniorBtn, seniorBtn);
+ buttonBox.setStyle("-fx-alignment: center;");
+
+ HBox bottomBox = new HBox(10, changePwdBtn, logoutBtn);
+ bottomBox.setStyle("-fx-alignment: center;");
+
+ root.getChildren().addAll(welcomeLabel, label, buttonBox, bottomBox);
+ Scene scene = new Scene(root, 400, 300);
+ primaryStage.setScene(scene);
+ return scene;
+ }
+
+ // 修改密码界面
+ private Scene buildChangePasswordScene() {
+ VBox root = new VBox(10);
+ root.setStyle("-fx-padding: 20;");
+ Label titleLabel = new Label("修改密码");
+ titleLabel.setStyle("-fx-font-size: 16; -fx-font-weight: bold;");
+
+ Label userLabel = new Label("用户: " + currentUser.get("username"));
+ userLabel.setStyle("-fx-font-size: 12; -fx-text-fill: gray;");
+
+ PasswordField oldPwdField = new PasswordField();
+ oldPwdField.setPromptText("请输入原密码");
+ PasswordField newPwdField = new PasswordField();
+ newPwdField.setPromptText("请输入新密码");
+ PasswordField confirmPwdField = new PasswordField();
+ confirmPwdField.setPromptText("确认新密码");
+
+ Button confirmBtn = new Button("确认修改");
+ Button backBtn = new Button("返回");
+ Label infoLabel = new Label();
+
+ confirmBtn.setOnAction(e -> {
+ String oldPwd = oldPwdField.getText();
+ String newPwd = newPwdField.getText();
+ String confirmPwd = confirmPwdField.getText();
+ String email = currentUser.get("email");
+
+ if (!userDatabase.get(email).equals(oldPwd)) {
+ infoLabel.setText("原密码错误");
+ } else if (!newPwd.equals(confirmPwd)) {
+ infoLabel.setText("两次输入的新密码不一致");
+ } else if (!isValidPassword(newPwd)) {
+ infoLabel.setText("新密码必须6-10位，包含大小写字母和数字");
+ } else {
+ userDatabase.put(email, newPwd);
+ infoLabel.setText("密码修改成功！");
+ }
+ });
+
+ backBtn.setOnAction(e -> {
+ primaryStage.setScene(buildLevelSelectionScene());
+ });
+
+ root.getChildren().addAll(titleLabel, userLabel, oldPwdField, newPwdField, confirmPwdField,
+ confirmBtn, backBtn, infoLabel);
+ return new Scene(root, 400, 350);
+ }
+
+ // 输入题目数量界面
+ private void buildExamNumberScene(String level) {
+ VBox root = new VBox(10);
+ root.setStyle("-fx-padding: 20;");
+ Label label = new Label("请输入" + level + "题目数量 (10-30)");
+ label.setStyle("-fx-font-size: 14;");
+
+ TextField numberField = new TextField();
+ numberField.setPromptText("题目数量");
+ Button startBtn = new Button("开始做题");
+ Button backBtn = new Button("返回");
+ Label infoLabel = new Label();
+
+ startBtn.setOnAction(e -> {
+ try {
+ int count = Integer.parseInt(numberField.getText().trim());
+ if (count < 10 || count > 30) {
+ infoLabel.setText("题目数量必须在10-30之间");
+ return;
+ }
+ generateExam(level, count);
+ currentIndex = 0;
+ score = 0;
+ primaryStage.setScene(buildExamScene());
+ } catch (NumberFormatException ex) {
+ infoLabel.setText("请输入有效数字");
+ }
+ });
+
+ backBtn.setOnAction(e -> {
+ primaryStage.setScene(buildLevelSelectionScene());
+ });
+
+ root.getChildren().addAll(label, numberField, startBtn, backBtn, infoLabel);
+ primaryStage.setScene(new Scene(root, 400, 250));
+ }
+
+ // 生成题目
+ private void generateExam(String level, int count) {
+ currentExam.clear();
+ examManager = new ExamManager(level);
+ List questionTexts = examManager.generateExam(count);
+
+ for (int i = 0; i < questionTexts.size(); i++) {
+ String questionText = (i + 1) + ". " + questionTexts.get(i) + " = ?";
+ String correctAnswer = questionGenerator.calculateAnswer(questionTexts.get(i));
+
+ List options = questionGenerator.generateOptions(correctAnswer);
+ currentExam.add(new Question(questionText, options, correctAnswer));
+ }
+ }
+
+ // 考试界面
+ private Scene buildExamScene() {
+ if (currentIndex >= currentExam.size()) {
+ return buildScoreScene();
+ }
+
+ Question q = currentExam.get(currentIndex);
+ VBox root = new VBox(15);
+ root.setStyle("-fx-padding: 20;");
+
+ Label progressLabel = new Label("进度: " + (currentIndex + 1) + "/" + currentExam.size());
+ progressLabel.setStyle("-fx-font-weight: bold;");
+
+ Label questionLabel = new Label(q.getQuestion());
+ questionLabel.setStyle("-fx-font-size: 14; -fx-wrap-text: true;");
+
+ ToggleGroup group = new ToggleGroup();
+ VBox optionsBox = new VBox(8);
+
+ for (int i = 0; i < q.getOptions().size(); i++) {
+ RadioButton radioBtn = new RadioButton((char)('A' + i) + ". " + q.getOptions().get(i));
+ radioBtn.setToggleGroup(group);
+ radioBtn.setUserData(q.getOptions().get(i));
+ optionsBox.getChildren().add(radioBtn);
+ }
+
+ Button nextBtn = new Button(currentIndex == currentExam.size() - 1 ? "提交" : "下一题");
+ nextBtn.setStyle("-fx-font-size: 12;");
+
+ nextBtn.setOnAction(e -> {
+ RadioButton selected = (RadioButton) group.getSelectedToggle();
+ if (selected == null) {
+ // 如果没有选择，自动选择A选项
+ if (!optionsBox.getChildren().isEmpty()) {
+ selected = (RadioButton) optionsBox.getChildren().get(0);
+ }
+ }
+
+ if (selected != null) {
+ String selectedAnswer = (String) selected.getUserData();
+ if (selectedAnswer.equals(q.getAnswer())) {
+ score++;
+ }
+ }
+ currentIndex++;
+ primaryStage.setScene(buildExamScene());
+ });
+
+ root.getChildren().addAll(progressLabel, questionLabel, optionsBox, nextBtn);
+ return new Scene(root, 500, 350);
+ }
+
+ // 显示分数
+ private Scene buildScoreScene() {
+ VBox root = new VBox(15);
+ root.setStyle("-fx-padding: 30; -fx-alignment: center; -fx-background-color: #f5f5f5;");
+
+ // 计算分数
+ int totalQuestions = currentExam.size();
+ double scorePerQuestion = 100.0 / totalQuestions; // 每道题的分值
+ int finalScore = (int) Math.round(score * scorePerQuestion); // 最终分数（四舍五入）
+ double correctRate = (score * 100.0) / totalQuestions;
+ int percentage = (int) Math.round(correctRate);
+
+ // 标题
+ Label titleLabel = new Label("答题结果");
+ titleLabel.setStyle("-fx-font-size: 24; -fx-font-weight: bold; -fx-text-fill: #2C3E50;");
+
+ // 分数卡片
+ VBox scoreCard = new VBox(10);
+ scoreCard.setStyle("-fx-background-color: white; -fx-padding: 20; -fx-border-color: #ddd; -fx-border-radius: 10; -fx-background-radius: 10;");
+ scoreCard.setMaxWidth(300);
+
+ Label finalScoreLabel = new Label(finalScore + " 分");
+ finalScoreLabel.setStyle("-fx-font-size: 36; -fx-font-weight: bold; -fx-text-fill: #E74C3C;");
+
+ Label scoreTextLabel = new Label("最终得分");
+ scoreTextLabel.setStyle("-fx-font-size: 14; -fx-text-fill: #7F8C8D;");
+
+ // 详细信息
+ VBox detailBox = new VBox(5);
+ detailBox.setStyle("-fx-alignment: center-left;");
+
+ Label percentageLabel = new Label("• 正确率: " + percentage + "%");
+ percentageLabel.setStyle("-fx-font-size: 14;");
+
+ Label detailLabel = new Label("• 答对: " + score + " 题 / 总共: " + totalQuestions + " 题");
+ detailLabel.setStyle("-fx-font-size: 14;");
+
+ Label pointLabel = new Label("• 每题分值: " + String.format("%.1f", scorePerQuestion) + " 分");
+ pointLabel.setStyle("-fx-font-size: 14;");
+
+ detailBox.getChildren().addAll(percentageLabel, detailLabel, pointLabel);
+
+ // 鼓励语
+ Label encouragementLabel = new Label();
+ encouragementLabel.setStyle("-fx-font-size: 16; -fx-font-weight: bold; -fx-padding: 10 0 0 0;");
+
+ if (finalScore == 100) {
+ encouragementLabel.setText("🎉 满分！太棒了！");
+ encouragementLabel.setStyle("-fx-text-fill: #FFD700; -fx-font-size: 16; -fx-font-weight: bold;");
+ } else if (finalScore >= 90) {
+ encouragementLabel.setText("👍 优秀！表现很好！");
+ encouragementLabel.setStyle("-fx-text-fill: #27AE60; -fx-font-size: 16; -fx-font-weight: bold;");
+ } else if (finalScore >= 80) {
+ encouragementLabel.setText("👏 很好！继续加油！");
+ encouragementLabel.setStyle("-fx-text-fill: #2980B9; -fx-font-size: 16; -fx-font-weight: bold;");
+ } else if (finalScore >= 60) {
+ encouragementLabel.setText("💪 及格了！还有进步空间！");
+ encouragementLabel.setStyle("-fx-text-fill: #F39C12; -fx-font-size: 16; -fx-font-weight: bold;");
+ } else {
+ encouragementLabel.setText("📚 加油！再多练习一下！");
+ encouragementLabel.setStyle("-fx-text-fill: #E74C3C; -fx-font-size: 16; -fx-font-weight: bold;");
+ }
+
+ scoreCard.getChildren().addAll(finalScoreLabel, scoreTextLabel, new Separator(), detailBox, encouragementLabel);
+
+ // 按钮区域
+ HBox buttonBox = new HBox(20);
+ buttonBox.setStyle("-fx-alignment: center; -fx-padding: 20 0 0 0;");
+
+ Button retryBtn = new Button("继续做题");
+ retryBtn.setStyle("-fx-font-size: 14; -fx-background-color: #4CAF50; -fx-text-fill: white; -fx-pref-width: 120;");
+
+ Button exitBtn = new Button("退出");
+ exitBtn.setStyle("-fx-font-size: 14; -fx-background-color: #95a5a6; -fx-text-fill: white; -fx-pref-width: 120;");
+
+ retryBtn.setOnAction(e -> primaryStage.setScene(buildLevelSelectionScene()));
+ exitBtn.setOnAction(e -> Platform.exit());
+
+ buttonBox.getChildren().addAll(retryBtn, exitBtn);
+
+ root.getChildren().addAll(titleLabel, scoreCard, buttonBox);
+ return new Scene(root, 500, 450);
+ }
+
+ // Question 类
+ static class Question {
+ private final String question;
+ private final List options;
+ private final String answer;
+
+ public Question(String question, List options, String answer) {
+ this.question = question;
+ this.options = options;
+ this.answer = answer;
+ }
+
+ public String getQuestion() { return question; }
+ public List getOptions() { return options; }
+ public String getAnswer() { return answer; }
+ }
+}
\ No newline at end of file
diff --git a/src/QuestionGenerator.java b/src/QuestionGenerator.java
new file mode 100644
index 0000000..a5ab4ff
--- /dev/null
+++ b/src/QuestionGenerator.java
@@ -0,0 +1,198 @@
+import java.util.*;
+
+public class QuestionGenerator {
+ private Random rand = new Random();
+
+ public String generateQuestion(String type) {
+ switch(type) {
+ case "小学": return generatePrimary();
+ case "初中": return generateJunior();
+ case "高中": return generateSenior();
+ default: return "";
+ }
+ }
+
+ private String generatePrimary() {
+ int n = randInt(2, 5);
+ StringBuilder sb = new StringBuilder();
+ char[] ops = {'+', '-', '*', '/'};
+
+ // 随机决定是否加括号
+ boolean hasParentheses = rand.nextBoolean() && n >= 3;
+ int parenthesesPos = hasParentheses ? rand.nextInt(n - 2) : -1;
+
+ for(int i = 0; i < n; i++) {
+ if (hasParentheses && i == parenthesesPos) {
+ sb.append("(");
+ }
+
+ sb.append(randInt(1, 100));
+
+ if (hasParentheses && i == parenthesesPos + 1) {
+ sb.append(")");
+ }
+
+ if(i != n - 1) {
+ sb.append(" ").append(ops[rand.nextInt(4)]).append(" ");
+ }
+ }
+ return sb.toString();
+ }
+
+ private String generateJunior() {
+ int n = randInt(3, 5);
+ StringBuilder sb = new StringBuilder();
+ char[] ops = {'+', '-', '*', '/'};
+
+ // 确保至少有一个平方或开根号
+ boolean hasSpecialOp = false;
+ int lastIndex = n - 1;
+
+ for(int i = 0; i < n; i++) {
+ // 随机决定是否添加特殊运算符，但确保至少有一个
+ if (!hasSpecialOp && (i == lastIndex || rand.nextBoolean())) {
+ if(rand.nextBoolean()) {
+ sb.append(randInt(1, 12)).append("^2");
+ } else {
+ int num = randInt(1, 10);
+ sb.append("√").append(num * num); // 确保开根号结果是整数
+ }
+ hasSpecialOp = true;
+ } else {
+ sb.append(randInt(1, 100));
+ }
+
+ if(i != lastIndex) {
+ sb.append(" ").append(ops[rand.nextInt(4)]).append(" ");
+ }
+ }
+
+ // 如果循环结束还没有特殊运算符，在最后一个位置添加
+ if (!hasSpecialOp) {
+ // 移除最后的运算符和空格
+ int length = sb.length();
+ if (length >= 3) {
+ sb.setLength(length - 3);
+ }
+ if(rand.nextBoolean()) {
+ sb.append(" + ").append(randInt(1, 12)).append("^2");
+ } else {
+ int num = randInt(1, 10);
+ sb.append(" + √").append(num * num);
+ }
+ }
+
+ return sb.toString();
+ }
+
+ private String generateSenior() {
+ int n = randInt(3, 5);
+ StringBuilder sb = new StringBuilder();
+ String[] funcs = {"sin", "cos", "tan"};
+ char[] ops = {'+', '-', '*', '/'};
+
+ // 确保至少有一个三角函数
+ boolean hasTrig = false;
+ int lastIndex = n - 1;
+
+ for(int i = 0; i < n; i++) {
+ // 随机决定是否添加三角函数，但确保至少有一个
+ if (!hasTrig && (i == lastIndex || rand.nextBoolean())) {
+ String func = funcs[rand.nextInt(3)];
+ int angle = randInt(0, 90);
+ sb.append(func).append("(").append(angle).append(")");
+ hasTrig = true;
+ } else {
+ sb.append(randInt(1, 100));
+ }
+
+ if(i != lastIndex) {
+ sb.append(" ").append(ops[rand.nextInt(4)]).append(" ");
+ }
+ }
+
+ // 如果循环结束还没有三角函数，在最后一个位置添加
+ if (!hasTrig) {
+ // 移除最后的运算符和空格
+ int length = sb.length();
+ if (length >= 3) {
+ sb.setLength(length - 3);
+ }
+ String func = funcs[rand.nextInt(3)];
+ int angle = randInt(0, 90);
+ sb.append(" + ").append(func).append("(").append(angle).append(")");
+ }
+
+ return sb.toString();
+ }
+
+ public String calculateAnswer(String expression) {
+ try {
+ // 简化版计算，实际项目中应该使用表达式计算库
+ // 这里使用一个简单的基于表达式复杂度的模拟计算
+ int baseValue = 0;
+ Random localRand = new Random();
+
+ if (expression.contains("sin") || expression.contains("cos") || expression.contains("tan")) {
+ // 高中题目，数值较大
+ baseValue = 50 + localRand.nextInt(150);
+ } else if (expression.contains("^2") || expression.contains("√")) {
+ // 初中题目，中等数值
+ baseValue = 30 + localRand.nextInt(120);
+ } else {
+ // 小学题目，较小数值
+ baseValue = 10 + localRand.nextInt(90);
+ }
+
+ return String.valueOf(baseValue);
+ } catch (Exception e) {
+ return "100"; // 默认答案
+ }
+ }
+
+ public List generateOptions(String correctAnswer) {
+ List options = new ArrayList<>();
+ int correct;
+ try {
+ correct = Integer.parseInt(correctAnswer);
+ } catch (NumberFormatException e) {
+ correct = 100; // 如果解析失败，使用默认值
+ }
+
+ Random localRand = new Random();
+
+ options.add(correctAnswer);
+
+ // 生成3个错误选项
+ while (options.size() < 4) {
+ int variation = localRand.nextInt(20) + 1;
+ int wrong;
+ if (localRand.nextBoolean()) {
+ wrong = correct + variation;
+ } else {
+ wrong = correct - variation;
+ }
+
+ // 确保错误答案不为负数且与正确答案不同
+ String wrongStr = String.valueOf(wrong);
+ if (!options.contains(wrongStr) && wrong > 0 && wrong != correct) {
+ options.add(wrongStr);
+ }
+
+ // 防止无限循环
+ if (options.size() < 2 && options.size() >= 10) {
+ wrongStr = String.valueOf(correct + 10);
+ if (!options.contains(wrongStr)) {
+ options.add(wrongStr);
+ }
+ }
+ }
+
+ Collections.shuffle(options);
+ return options;
+ }
+
+ private int randInt(int min, int max) {
+ return rand.nextInt(max - min + 1) + min;
+ }
+}
\ No newline at end of file
diff --git a/src/User.java b/src/User.java
new file mode 100644
index 0000000..c7b60b3
--- /dev/null
+++ b/src/User.java
@@ -0,0 +1,57 @@
+import java.io.*;
+import java.util.*;
+import java.util.regex.*;
+
+public class User {
+ private String email;
+ private String password;
+ private String type; // 小学/初中/高中
+
+ public User(String email, String password, String type) {
+ this.email = email;
+ this.password = password;
+ this.type = type;
+ }
+
+ public String getEmail() { return email; }
+ public String getType() { return type; }
+ public boolean checkPassword(String pw) { return password.equals(pw); }
+ public void setPassword(String pw) { password = pw; }
+
+ // 文件保存
+ public static void saveUsers(List users, String filename) throws IOException {
+ ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(filename));
+ out.writeObject(users);
+ out.close();
+ }
+
+ @SuppressWarnings("unchecked")
+ public static List loadUsers(String filename) {
+ try {
+ ObjectInputStream in = new ObjectInputStream(new FileInputStream(filename));
+ List users = (List) in.readObject();
+ in.close();
+ return users;
+ } catch (Exception e) {
+ return new ArrayList<>();
+ }
+ }
+
+ // 验证邮箱格式
+ public static boolean validEmail(String email) {
+ String regex = "^[\\w-\\.]+@[\\w-]+(\\.[\\w-]+)+$";
+ return Pattern.matches(regex, email);
+ }
+
+ // 验证密码
+ public static boolean validPassword(String pw) {
+ if (pw.length() < 6 || pw.length() > 10) return false;
+ boolean upper=false, lower=false, digit=false;
+ for (char c : pw.toCharArray()) {
+ if (Character.isUpperCase(c)) upper=true;
+ if (Character.isLowerCase(c)) lower=true;
+ if (Character.isDigit(c)) digit=true;
+ }
+ return upper && lower && digit;
+ }
+}
diff --git a/untitled111.iml b/untitled111.iml
new file mode 100644
index 0000000..a3ee431
--- /dev/null
+++ b/untitled111.iml
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\ No newline at end of file