114 changed files with 2838 additions and 1067 deletions
--- a/README.md
+++ b/README.md
@ -0,0 +1,2 @@
+# math_paper
+
--- a/src/.idea/.name
+++ b/src/.idea/.name
@ -1 +0,0 @@
-Authenticator.java
--- a/src/AbstractQuestionGenerator.java
+++ b/src/AbstractQuestionGenerator.java
@ -1,43 +0,0 @@
-import java.util.Random;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
-abstract public class AbstractQuestionGenerator {
-    protected final Random random = new Random();
-    protected final Level level;
-
-    public AbstractQuestionGenerator(Level level) {
-        this.level = level;
-    }
-
-    protected int getRandomNumber() {
-        return random.nextInt(100) + 1;
-    }
-
-    protected String getRandomBinaryOp() {
-        String[] ops = {"+", "-", "*", "/"};
-        return ops[random.nextInt(ops.length)];
-    }
-
-    abstract String generateExpression();
-
-    abstract boolean isValidForLevel(String expression);
-
-    protected int countOperands(String expression) {
-        int count = 0;
-        Pattern pattern = Pattern.compile("\\d+");
-        Matcher matcher = pattern.matcher(expression);
-        while (matcher.find()) {
-            count++;
-        }
-        return count;
-    }
-
-    public String generateQuestion() {
-        String expression;
-        do {
-            expression = generateExpression();
-        } while (countOperands(expression) < 1 || countOperands(expression) > 5 || !isValidForLevel(expression));
-        return expression + " =";
-    }
-}
--- a/src/Authenticator.java
+++ b/src/Authenticator.java
@ -1,26 +0,0 @@
-import java.util.HashMap;
-import java.util.Map;
-
-public class Authenticator {
-    private final Map<String, User> users = new HashMap<>();
-
-    public Authenticator() {
-        users.put("张三1", new User("张三1", "123", Level.ELEMENTARY));
-        users.put("张三2", new User("张三2", "123", Level.ELEMENTARY));
-        users.put("张三3", new User("张三3", "123", Level.ELEMENTARY));
-        users.put("李四1", new User("李四1", "123", Level.JUNIOR));
-        users.put("李四2", new User("李四2", "123", Level.JUNIOR));
-        users.put("李四3", new User("李四3", "123", Level.JUNIOR));
-        users.put("王五1", new User("王五1", "123", Level.SENIOR));
-        users.put("王五2", new User("王五2", "123", Level.SENIOR));
-        users.put("王五3", new User("王五3", "123", Level.SENIOR));
-    }
-
-    public User login(String username, String password) {
-        User user = users.get(username);
-        if (user != null && user.password.equals(password)) {
-            return user;
-        }
-        return null;
-    }
-}
--- a/src/ElementaryGenerator.java
+++ b/src/ElementaryGenerator.java
@ -1,25 +0,0 @@
-public class ElementaryGenerator extends AbstractQuestionGenerator{
-    public ElementaryGenerator() {
-        super(Level.ELEMENTARY);
-    }
-
-    @Override
-    String generateExpression() {
-        return generateSub(4);
-    }
-
-    private String generateSub(int depth) {
-        if (depth == 0 || random.nextDouble() < 0.4) {
-            return String.valueOf(getRandomNumber());
-        }
-        String left = generateSub(depth - 1);
-        String op = getRandomBinaryOp();
-        String right = generateSub(depth - 1);
-        return "(" + left + op + right + ")";
-    }
-
-    @Override
-    boolean isValidForLevel(String expression) {
-        return true;
-    }
-}
--- a/src/HistoryManager.java
+++ b/src/HistoryManager.java
@ -1,45 +0,0 @@
-import java.util.HashSet;
-import java.util.Set;
-import java.io.*;
-
-public class HistoryManager {
-    private final Set<String> existingQuestions = new HashSet<>();
-
-    public HistoryManager(String username) {
-        File folder = new File(username);
-        if (!folder.exists() && !folder.mkdir()) {
-            System.err.println("无法创建文件夹: " + username);
-        }
-        File[] files = folder.listFiles();
-        if (files != null) {
-            for (File file : files) {
-                if (file.isFile() && file.getName().endsWith(".txt")) {
-                    try (BufferedReader reader = new BufferedReader(new FileReader(file))) {
-                        String line;
-                        while ((line = reader.readLine()) != null) {
-                            line = line.trim();
-                            if (line.matches("^\\d+\\..*")) {
-                                int dotIndex = line.indexOf('.');
-                                String question = line.substring(dotIndex + 1).trim();
-                                if (question.endsWith("=")) {
-                                    question = question.substring(0, question.length() - 1).trim();
-                                }
-                                existingQuestions.add(question);
-                            }
-                        }
-                    } catch (IOException e) {
-                        System.err.println("读取文件出错: " + file.getName());
-                    }
-                }
-            }
-        }
-    }
-
-    public boolean isDuplicate(String question) {
-        return existingQuestions.contains(question);
-    }
-
-    public void add(String question) {
-        existingQuestions.add(question);
-    }
-}
--- a/src/JuniorGenerator.java
+++ b/src/JuniorGenerator.java
@ -1,34 +0,0 @@
-public class JuniorGenerator extends AbstractQuestionGenerator{
-    public JuniorGenerator() {
-        super(Level.JUNIOR);
-    }
-
-    @Override
-    String generateExpression() {
-        return generateSub(4);
-    }
-
-    private String generateSub(int depth) {
-        if (depth == 0 || random.nextDouble() < 0.4) {
-            return String.valueOf(getRandomNumber());
-        }
-        double r = random.nextDouble();
-        if (r < 0.5) {
-            String left = generateSub(depth - 1);
-            String op = getRandomBinaryOp();
-            String right = generateSub(depth - 1);
-            return "(" + left + op + right + ")";
-        } else if (r < 0.75) {
-            String sub = generateSub(depth - 1);
-            return "sqrt(" + sub + ")";
-        } else {
-            String sub = generateSub(depth - 1);
-            return "(" + sub + ")^2";
-        }
-    }
-
-    @Override
-    boolean isValidForLevel(String expression) {
-        return expression.contains("sqrt") || expression.contains("^2");
-    }
-}
--- a/src/Level.java
+++ b/src/Level.java
@ -1,15 +0,0 @@
-public enum Level {
-    ELEMENTARY("小学"),
-    JUNIOR("初中"),
-    SENIOR("高中");
-
-    private final String name;
-
-    Level(String name) {
-        this.name = name;
-    }
-
-    public String getName() {
-        return name;
-    }
-}
--- a/src/Main.java
+++ b/src/Main.java
@ -1,114 +0,0 @@
-import java.util.*;
-import java.io.*;
-import java.text.SimpleDateFormat;
-
-public class Main {
-    public static void main(String[] args) {
-        Scanner scanner = new Scanner(System.in);
-        Authenticator authenticator = new Authenticator();
-        User user;
-
-        while (true) {
-            System.out.print("请输入用户名和密码（空格隔开）：");
-            String inputLine = scanner.nextLine().trim();
-            String[] input = inputLine.split("\\s+");
-            if (input.length != 2) {
-                System.out.println("请输入正确的用户名、密码");
-                continue;
-            }
-            user = authenticator.login(input[0], input[1]);
-            if (user == null) {
-                System.out.println("请输入正确的用户名、密码");
-                continue;
-            }
-            Level currentLevel = user.initialLevel;
-            HistoryManager history = new HistoryManager(user.username);
-
-            while (true) {
-                System.out.println("当前选择为" + currentLevel.getName() + " 出题");
-                System.out.print("准备生成" + currentLevel.getName() + " 数学题目，请输入生成题目数量（输入-1将退出当前用户，重新登录）：");
-                String input_text = scanner.nextLine().trim();
-
-                if (input_text.startsWith("切换为")) {
-                    String newLevelStr = input_text.substring("切换为".length()).trim();
-                    Level newLevel = switch (newLevelStr) {
-                        case "小学" -> Level.ELEMENTARY;
-                        case "初中" -> Level.JUNIOR;
-                        case "高中" -> Level.SENIOR;
-                        default -> null;
-                    };
-                    if (newLevel != null) {
-                        currentLevel = newLevel;
-                    } else {
-                        System.out.println("请输入小学、初中和高中三个选项中的一个");
-                    }
-                    continue;
-                }
-
-                int numQuestions;
-                try {
-                    numQuestions = Integer.parseInt(input_text);
-                } catch (NumberFormatException e) {
-                    System.out.println("无效输入");
-                    continue;
-                }
-
-                if (numQuestions == -1) {
-                    break;
-                }
-
-                if (numQuestions < 10 || numQuestions > 30) {
-                    System.out.println("数量应在10-30");
-                    continue;
-                }
-
-                AbstractQuestionGenerator generator = getGenerator(currentLevel);
-                List<String> questions = new ArrayList<>();
-                boolean failed = false;
-                for (int i = 0; i < numQuestions; i++) {
-                    String question;
-                    int attempts = 0;
-                    do {
-                        question = generator.generateQuestion();
-                        attempts++;
-                        if (attempts > 100) {
-                            System.out.println("无法生成足够独特的题目");
-                            failed = true;
-                            break;
-                        }
-                    } while (history.isDuplicate(question));
-                    if (failed) {
-                        break;
-                    }
-                    questions.add(question);
-                    history.add(question);
-                }
-
-                if (!questions.isEmpty() && !failed) {
-                    Date now = new Date();
-                    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");
-                    String filename = sdf.format(now) + ".txt";
-                    File folder = new File(user.username);
-                    File file = new File(folder, filename);
-                    try (PrintWriter writer = new PrintWriter(file)) {
-                        for (int i = 0; i < questions.size(); i++) {
-                            writer.println((i + 1) + ". " + questions.get(i));
-                            writer.println();
-                        }
-                    } catch (IOException e) {
-                        System.err.println("保存文件出错: " + e.getMessage());
-                    }
-                }
-            }
-        }
-    }
-
-    private static AbstractQuestionGenerator getGenerator(Level level) {
-        return switch (level) {
-            case ELEMENTARY -> new ElementaryGenerator();
-            case JUNIOR -> new JuniorGenerator();
-            case SENIOR -> new SeniorGenerator();
-            //default -> throw new IllegalArgumentException("未知水平");
-        };
-    }
-}
--- a/src/SeniorGenerator.java
+++ b/src/SeniorGenerator.java
@ -1,33 +0,0 @@
-public class SeniorGenerator extends AbstractQuestionGenerator{
-    public SeniorGenerator() {
-        super(Level.SENIOR);
-    }
-
-    @Override
-    String generateExpression() {
-        return generateSub(4);
-    }
-
-    private String generateSub(int depth) {
-        if (depth == 0 || random.nextDouble() < 0.4) {
-            return String.valueOf(getRandomNumber());
-        }
-        double r = random.nextDouble();
-        if (r < 0.5) {
-            String left = generateSub(depth - 1);
-            String op = getRandomBinaryOp();
-            String right = generateSub(depth - 1);
-            return "(" + left + op + right + ")";
-        } else {
-            String[] funcs = {"sin", "cos", "tan"};
-            String func = funcs[random.nextInt(funcs.length)];
-            String sub = generateSub(depth - 1);
-            return func + "(" + sub + ")";
-        }
-    }
-
-    @Override
-    boolean isValidForLevel(String expression) {
-        return expression.contains("sin") || expression.contains("cos") || expression.contains("tan");
-    }
-}
--- a/src/User.java
+++ b/src/User.java
@ -1,11 +0,0 @@
-public class User {
-    String username;
-    String password;
-    Level initialLevel;
-
-    public User(String username, String password, Level initialLevel) {
-        this.username = username;
-        this.password = password;
-        this.initialLevel = initialLevel;
-    }
-}
--- a/src/out/production/src/.idea/.name
+++ b/src/out/production/src/.idea/.name
@ -1 +0,0 @@
-Authenticator.java
--- a/src/out/production/src/AbstractQuestionGenerator.class
+++ b/src/out/production/src/AbstractQuestionGenerator.class
--- a/src/out/production/src/Authenticator.class
+++ b/src/out/production/src/Authenticator.class
--- a/src/out/production/src/ElementaryGenerator.class
+++ b/src/out/production/src/ElementaryGenerator.class
--- a/src/out/production/src/HistoryManager.class
+++ b/src/out/production/src/HistoryManager.class
--- a/src/out/production/src/JuniorGenerator.class
+++ b/src/out/production/src/JuniorGenerator.class
--- a/src/out/production/src/Level.class
+++ b/src/out/production/src/Level.class
--- a/src/out/production/src/Main$1.class
+++ b/src/out/production/src/Main$1.class
--- a/src/out/production/src/Main.class
+++ b/src/out/production/src/Main.class
--- a/src/out/production/src/SeniorGenerator.class
+++ b/src/out/production/src/SeniorGenerator.class
--- a/src/out/production/src/User.class
+++ b/src/out/production/src/User.class
--- a/src/out/production/src/张三1/2025-09-24-08-36-42.txt
+++ b/src/out/production/src/张三1/2025-09-24-08-36-42.txt
@ -1,20 +0,0 @@
-1. (64-2) =
-
-2. 62 =
-
-3. 13 =
-
-4. 78 =
-
-5. 72 =
-
-6. (53-(53/((38+98)*32))) =
-
-7. (57-52) =
-
-8. (57+14) =
-
-9. (((17*(6-21))*93)+63) =
-
-10. 15 =
-
--- a/src/out/production/src/张三1/2025-09-24-08-36-49.txt
+++ b/src/out/production/src/张三1/2025-09-24-08-36-49.txt
@ -1,20 +0,0 @@
-1. 70 =
-
-2. 39 =
-
-3. 47 =
-
-4. (21*(64+80)) =
-
-5. (32-32) =
-
-6. (76-34) =
-
-7. (27/8) =
-
-8. (51*47) =
-
-9. 9 =
-
-10. 82 =
-
--- a/src/out/production/src/张三1/2025-09-24-08-36-54.txt
+++ b/src/out/production/src/张三1/2025-09-24-08-36-54.txt
@ -1,42 +0,0 @@
-1. (45-((1*75)*36)) =
-
-2. 4 =
-
-3. (((33+(69*44))-56)-76) =
-
-4. 66 =
-
-5. 27 =
-
-6. 84 =
-
-7. (6/77) =
-
-8. 1 =
-
-9. (79+27) =
-
-10. (68+(92*(20*(55/1)))) =
-
-11. 8 =
-
-12. (67+(((49/50)/87)/23)) =
-
-13. (18*((51-31)*48)) =
-
-14. ((19*42)*29) =
-
-15. 37 =
-
-16. 63 =
-
-17. (69*47) =
-
-18. (((24/(40*17))*31)/93) =
-
-19. 20 =
-
-20. 3 =
-
-21. 95 =
-
--- a/src/张三1/2025-09-24-08-36-42.txt
+++ b/src/张三1/2025-09-24-08-36-42.txt
@ -1,20 +0,0 @@
-1. (64-2) =
-
-2. 62 =
-
-3. 13 =
-
-4. 78 =
-
-5. 72 =
-
-6. (53-(53/((38+98)*32))) =
-
-7. (57-52) =
-
-8. (57+14) =
-
-9. (((17*(6-21))*93)+63) =
-
-10. 15 =
-
--- a/src/张三1/2025-09-24-08-36-49.txt
+++ b/src/张三1/2025-09-24-08-36-49.txt
@ -1,20 +0,0 @@
-1. 70 =
-
-2. 39 =
-
-3. 47 =
-
-4. (21*(64+80)) =
-
-5. (32-32) =
-
-6. (76-34) =
-
-7. (27/8) =
-
-8. (51*47) =
-
-9. 9 =
-
-10. 82 =
-
--- a/src/张三1/2025-09-24-08-36-54.txt
+++ b/src/张三1/2025-09-24-08-36-54.txt
@ -1,42 +0,0 @@
-1. (45-((1*75)*36)) =
-
-2. 4 =
-
-3. (((33+(69*44))-56)-76) =
-
-4. 66 =
-
-5. 27 =
-
-6. 84 =
-
-7. (6/77) =
-
-8. 1 =
-
-9. (79+27) =
-
-10. (68+(92*(20*(55/1)))) =
-
-11. 8 =
-
-12. (67+(((49/50)/87)/23)) =
-
-13. (18*((51-31)*48)) =
-
-14. ((19*42)*29) =
-
-15. 37 =
-
-16. 63 =
-
-17. (69*47) =
-
-18. (((24/(40*17))*31)/93) =
-
-19. 20 =
-
-20. 3 =
-
-21. 95 =
-
--- a/src/张三1/2025-09-24-20-12-52.txt
+++ b/src/张三1/2025-09-24-20-12-52.txt
@ -1,30 +0,0 @@
-1. 35 =
-
-2. 91 =
-
-3. 68 =
-
-4. 2 =
-
-5. 74 =
-
-6. 80 =
-
-7. (8/15) =
-
-8. 93 =
-
-9. (68/70) =
-
-10. 8 =
-
-11. (61-49) =
-
-12. (2-16) =
-
-13. (64-76) =
-
-14. 5 =
-
-15. 94 =
-
--- a/src/张三1/2025-09-24-20-22-13.txt
+++ b/src/张三1/2025-09-24-20-22-13.txt
@ -1,60 +0,0 @@
-1. (100/((72/91)+(33*87))) =
-
-2. 84 =
-
-3. 72 =
-
-4. 34 =
-
-5. (70+55) =
-
-6. (35/14) =
-
-7. (((26/34)-77)/26) =
-
-8. 81 =
-
-9. (55+30) =
-
-10. (38*(((40*17)-44)-54)) =
-
-11. (90/39) =
-
-12. 15 =
-
-13. (28+22) =
-
-14. 3 =
-
-15. 33 =
-
-16. 46 =
-
-17. 68 =
-
-18. 38 =
-
-19. 48 =
-
-20. (36*53) =
-
-21. ((12-((34+98)-49))*13) =
-
-22. (6/(90*(42*(72/50)))) =
-
-23. (52+87) =
-
-24. 98 =
-
-25. 90 =
-
-26. ((86+43)-18) =
-
-27. 64 =
-
-28. 22 =
-
-29. 89 =
-
-30. 91 =
-
--- a/src/张三1/2025-09-24-20-22-19.txt
+++ b/src/张三1/2025-09-24-20-22-19.txt
@ -1,60 +0,0 @@
-1. 8 =
-
-2. ((76+92)/52) =
-
-3. 6 =
-
-4. 31 =
-
-5. (72+60) =
-
-6. 54 =
-
-7. ((58-93)*(66+34)) =
-
-8. 4 =
-
-9. 28 =
-
-10. 43 =
-
-11. 83 =
-
-12. ((11+(49/(89*57)))+7) =
-
-13. 75 =
-
-14. 77 =
-
-15. 9 =
-
-16. (28*89) =
-
-17. 74 =
-
-18. 60 =
-
-19. 56 =
-
-20. 47 =
-
-21. (22+(99-58)) =
-
-22. (28*30) =
-
-23. 67 =
-
-24. 14 =
-
-25. (10/(63*12)) =
-
-26. ((84*17)/31) =
-
-27. 70 =
-
-28. 93 =
-
-29. ((86-82)*(17/90)) =
-
-30. 27 =
-
--- a/src/张三1/2025-09-24-20-22-21.txt
+++ b/src/张三1/2025-09-24-20-22-21.txt
@ -1,60 +0,0 @@
-1. (8*37) =
-
-2. ((30/65)*85) =
-
-3. 59 =
-
-4. 79 =
-
-5. 40 =
-
-6. 45 =
-
-7. (91*11) =
-
-8. 65 =
-
-9. (12-(5/((80/23)/9))) =
-
-10. (28*(9+3)) =
-
-11. ((((73-99)/84)-45)+40) =
-
-12. 44 =
-
-13. 36 =
-
-14. ((48-(20-(39-74)))-22) =
-
-15. 24 =
-
-16. (54/32) =
-
-17. (61*(((62-96)+70)-21)) =
-
-18. 5 =
-
-19. (81*55) =
-
-20. ((9/(78*78))-44) =
-
-21. 78 =
-
-22. ((52+71)-66) =
-
-23. ((74*(64/(92-85)))-55) =
-
-24. 80 =
-
-25. (((92/(71*15))/92)/46) =
-
-26. 96 =
-
-27. ((65/66)*79) =
-
-28. (78-((68*(71+54))+19)) =
-
-29. 1 =
-
-30. (2-(27-(56/19))) =
-
--- a/src/张三1/2025-09-24-20-22-22.txt
+++ b/src/张三1/2025-09-24-20-22-22.txt
@ -1,60 +0,0 @@
-1. 61 =
-
-2. 76 =
-
-3. 94 =
-
-4. (4-(((45/3)-70)*44)) =
-
-5. 35 =
-
-6. ((57-((44/68)*50))/11) =
-
-7. ((2+19)/(23/84)) =
-
-8. (((42+(30*27))*56)-10) =
-
-9. ((39*18)*(100+5)) =
-
-10. 12 =
-
-11. 58 =
-
-12. ((((64-28)/9)-20)+5) =
-
-13. ((38+((68+18)/71))*76) =
-
-14. (90*7) =
-
-15. 100 =
-
-16. ((15/(83+(29-77)))+90) =
-
-17. ((((57*7)-1)-8)/97) =
-
-18. 52 =
-
-19. (73-16) =
-
-20. (61+68) =
-
-21. ((83/29)/80) =
-
-22. 71 =
-
-23. ((67*58)*42) =
-
-24. 19 =
-
-25. 55 =
-
-26. (13/(53+(71*(82+2)))) =
-
-27. (11/((14-(13+66))/67)) =
-
-28. 69 =
-
-29. (62-61) =
-
-30. 51 =
-
--- a/src/张三1/2025-09-24-20-22-57.txt
+++ b/src/张三1/2025-09-24-20-22-57.txt
@ -1,60 +0,0 @@
-1. 11 =
-
-2. ((((78/6)+4)*26)/81) =
-
-3. 26 =
-
-4. (19+(42/91)) =
-
-5. (7+58) =
-
-6. ((53+14)/26) =
-
-7. 17 =
-
-8. (56-(((81+82)+47)-52)) =
-
-9. (69-(36*(2-71))) =
-
-10. (95/(3/((98/43)-93))) =
-
-11. (39-84) =
-
-12. ((40+72)+(7*36)) =
-
-13. (90-70) =
-
-14. 23 =
-
-15. (31*38) =
-
-16. 92 =
-
-17. 73 =
-
-18. (61-((52/(96+31))+24)) =
-
-19. ((30/(35/85))*29) =
-
-20. 95 =
-
-21. ((49*28)+51) =
-
-22. 30 =
-
-23. ((71*70)*11) =
-
-24. 63 =
-
-25. (((93+(87*79))+50)/14) =
-
-26. (30/(40*14)) =
-
-27. 37 =
-
-28. 97 =
-
-29. 87 =
-
-30. (33*77) =
-
--- a/src/张三1/2025-09-24-20-22-59.txt
+++ b/src/张三1/2025-09-24-20-22-59.txt
@ -1,60 +0,0 @@
-1. 41 =
-
-2. 99 =
-
-3. (70+(64*20)) =
-
-4. (63+97) =
-
-5. ((20-(29-(53/24)))/58) =
-
-6. (19-75) =
-
-7. 53 =
-
-8. ((70+53)+54) =
-
-9. 7 =
-
-10. (61/(87+((6-34)-69))) =
-
-11. (88-((27+(32+51))-83)) =
-
-12. (88-45) =
-
-13. (75+(81+51)) =
-
-14. (95*8) =
-
-15. (18*((49+(28+81))/100)) =
-
-16. (14+28) =
-
-17. ((43*(30-(26*47)))*84) =
-
-18. (87-95) =
-
-19. 42 =
-
-20. 29 =
-
-21. (25+(27+(27*71))) =
-
-22. 20 =
-
-23. (50/99) =
-
-24. 62 =
-
-25. 18 =
-
-26. ((61*(94/(65/16)))*48) =
-
-27. (100+28) =
-
-28. (13/8) =
-
-29. 57 =
-
-30. (((42-(93/8))+8)-27) =
-
--- a/src/张三1/2025-09-24-20-23-00.txt
+++ b/src/张三1/2025-09-24-20-23-00.txt
@ -1,60 +0,0 @@
-1. (56+41) =
-
-2. (29-36) =
-
-3. (99-((82/(91/13))-77)) =
-
-4. ((43/((59*32)/70))+14) =
-
-5. (57+(16*53)) =
-
-6. ((((90*33)*68)-60)*61) =
-
-7. (29/(96-(68+66))) =
-
-8. (37/39) =
-
-9. (28-24) =
-
-10. 25 =
-
-11. (70/44) =
-
-12. (79-((50+(10*15))-83)) =
-
-13. (57/45) =
-
-14. (91/3) =
-
-15. ((41+16)*65) =
-
-16. 10 =
-
-17. ((57-((29+82)*41))-33) =
-
-18. ((73/(19-(7*17)))+99) =
-
-19. 82 =
-
-20. 16 =
-
-21. ((96+(99+(17-37)))/9) =
-
-22. (64*(94+((57+25)*20))) =
-
-23. ((19*94)*38) =
-
-24. (77*((20-36)+16)) =
-
-25. ((((6/85)*34)/91)-13) =
-
-26. ((((8+84)/14)-74)*70) =
-
-27. (((78+(48-44))-21)*37) =
-
-28. (68-65) =
-
-29. ((13-33)*46) =
-
-30. ((11*76)*92) =
-
--- a/个人项目/.idea/.gitignore
+++ b/个人项目/.idea/.gitignore
@ -1,3 +1,3 @@
-# 默认忽略的文件
-/shelf/
-/workspace.xml
+# 默认忽略的文件
+/shelf/
+/workspace.xml
--- a/个人项目/.idea/.name
+++ b/个人项目/.idea/.name
@ -0,0 +1 @@
+AbstractQuestionGenerator.java
--- a/src/out/production/src/.idea/checkstyle-idea.xml
+++ b/src/out/production/src/.idea/checkstyle-idea.xml
@ -1,16 +1,19 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="CheckStyle-IDEA" serialisationVersion="2">
-    <checkstyleVersion>11.0.1</checkstyleVersion>
-    <scanScope>JavaOnly</scanScope>
-    <copyLibs>true</copyLibs>
-    <option name="thirdPartyClasspath" />
-    <option name="activeLocationIds" />
-    <option name="locations">
-      <list>
-        <ConfigurationLocation id="bundled-sun-checks" type="BUNDLED" scope="All" description="Sun Checks">(bundled)</ConfigurationLocation>
-        <ConfigurationLocation id="bundled-google-checks" type="BUNDLED" scope="All" description="Google Checks">(bundled)</ConfigurationLocation>
-      </list>
-    </option>
-  </component>
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CheckStyle-IDEA" serialisationVersion="2">
+    <checkstyleVersion>11.0.1</checkstyleVersion>
+    <scanScope>JavaOnly</scanScope>
+    <suppressErrors>true</suppressErrors>
+    <copyLibs>true</copyLibs>
+    <option name="thirdPartyClasspath" />
+    <option name="activeLocationIds">
+      <option value="bundled-google-checks" />
+    </option>
+    <option name="locations">
+      <list>
+        <ConfigurationLocation id="bundled-sun-checks" type="BUNDLED" scope="All" description="Sun Checks">(bundled)</ConfigurationLocation>
+        <ConfigurationLocation id="bundled-google-checks" type="BUNDLED" scope="All" description="Google Checks">(bundled)</ConfigurationLocation>
+      </list>
+    </option>
+  </component>
 </project>
--- a/个人项目/.idea/codeStyles/codeStyleConfig.xml
+++ b/个人项目/.idea/codeStyles/codeStyleConfig.xml
@ -0,0 +1,5 @@
+<component name="ProjectCodeStyleConfiguration">
+  <state>
+    <option name="PREFERRED_PROJECT_CODE_STYLE" value="GoogleStyle" />
+  </state>
+</component>
--- a/src/out/production/src/.idea/misc.xml
+++ b/src/out/production/src/.idea/misc.xml
@ -1,6 +1,6 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_23" default="true" project-jdk-name="openjdk-23" project-jdk-type="JavaSDK">
-    <output url="file://$PROJECT_DIR$/out" />
-  </component>
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_23_PREVIEW" project-jdk-name="openjdk-23" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
 </project>
--- a/个人项目/.idea/modules.xml
+++ b/个人项目/.idea/modules.xml
@ -1,8 +1,8 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectModuleManager">
-    <modules>
-      <module fileurl="file://$PROJECT_DIR$/.idea/src.iml" filepath="$PROJECT_DIR$/.idea/src.iml" />
-    </modules>
-  </component>
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/src.iml" filepath="$PROJECT_DIR$/.idea/src.iml" />
+    </modules>
+  </component>
 </project>
--- a/个人项目/.idea/src.iml
+++ b/个人项目/.idea/src.iml
@ -1,11 +1,14 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<module type="JAVA_MODULE" version="4">
-  <component name="NewModuleRootManager" inherit-compiler-output="true">
-    <exclude-output />
-    <content url="file://$MODULE_DIR$">
-      <sourceFolder url="file://$MODULE_DIR$" isTestSource="false" />
-    </content>
-    <orderEntry type="inheritedJdk" />
-    <orderEntry type="sourceFolder" forTests="false" />
-  </component>
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="CheckStyle-IDEA-Module" serialisationVersion="2">
+    <option name="activeLocationsIds" />
+  </component>
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
 </module>
--- a/个人项目/.idea/vcs.xml
+++ b/个人项目/.idea/vcs.xml
@ -1,6 +1,6 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="VcsDirectoryMappings">
-    <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
-  </component>
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
+  </component>
 </project>
--- a/个人项目/doc/个人修改代码.docx
+++ b/个人项目/doc/个人修改代码.docx
--- a/个人项目/out/production/src/.idea/.gitignore
+++ b/个人项目/out/production/src/.idea/.gitignore
@ -1,3 +1,3 @@
-# 默认忽略的文件
-/shelf/
-/workspace.xml
+# 默认忽略的文件
+/shelf/
+/workspace.xml
--- a/个人项目/out/production/src/.idea/.name
+++ b/个人项目/out/production/src/.idea/.name
@ -0,0 +1 @@
+AbstractQuestionGenerator.java
--- a/个人项目/out/production/src/.idea/checkstyle-idea.xml
+++ b/个人项目/out/production/src/.idea/checkstyle-idea.xml
@ -1,16 +1,19 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="CheckStyle-IDEA" serialisationVersion="2">
-    <checkstyleVersion>11.0.1</checkstyleVersion>
-    <scanScope>JavaOnly</scanScope>
-    <copyLibs>true</copyLibs>
-    <option name="thirdPartyClasspath" />
-    <option name="activeLocationIds" />
-    <option name="locations">
-      <list>
-        <ConfigurationLocation id="bundled-sun-checks" type="BUNDLED" scope="All" description="Sun Checks">(bundled)</ConfigurationLocation>
-        <ConfigurationLocation id="bundled-google-checks" type="BUNDLED" scope="All" description="Google Checks">(bundled)</ConfigurationLocation>
-      </list>
-    </option>
-  </component>
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CheckStyle-IDEA" serialisationVersion="2">
+    <checkstyleVersion>11.0.1</checkstyleVersion>
+    <scanScope>JavaOnly</scanScope>
+    <suppressErrors>true</suppressErrors>
+    <copyLibs>true</copyLibs>
+    <option name="thirdPartyClasspath" />
+    <option name="activeLocationIds">
+      <option value="bundled-google-checks" />
+    </option>
+    <option name="locations">
+      <list>
+        <ConfigurationLocation id="bundled-sun-checks" type="BUNDLED" scope="All" description="Sun Checks">(bundled)</ConfigurationLocation>
+        <ConfigurationLocation id="bundled-google-checks" type="BUNDLED" scope="All" description="Google Checks">(bundled)</ConfigurationLocation>
+      </list>
+    </option>
+  </component>
 </project>
--- a/个人项目/out/production/src/.idea/codeStyles/codeStyleConfig.xml
+++ b/个人项目/out/production/src/.idea/codeStyles/codeStyleConfig.xml
@ -0,0 +1,5 @@
+<component name="ProjectCodeStyleConfiguration">
+  <state>
+    <option name="PREFERRED_PROJECT_CODE_STYLE" value="GoogleStyle" />
+  </state>
+</component>
--- a/个人项目/out/production/src/.idea/misc.xml
+++ b/个人项目/out/production/src/.idea/misc.xml
@ -1,6 +1,6 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_23" default="true" project-jdk-name="openjdk-23" project-jdk-type="JavaSDK">
-    <output url="file://$PROJECT_DIR$/out" />
-  </component>
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_23_PREVIEW" project-jdk-name="openjdk-23" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
 </project>
--- a/个人项目/out/production/src/.idea/modules.xml
+++ b/个人项目/out/production/src/.idea/modules.xml
@ -1,8 +1,8 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectModuleManager">
-    <modules>
-      <module fileurl="file://$PROJECT_DIR$/.idea/src.iml" filepath="$PROJECT_DIR$/.idea/src.iml" />
-    </modules>
-  </component>
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/src.iml" filepath="$PROJECT_DIR$/.idea/src.iml" />
+    </modules>
+  </component>
 </project>
--- a/个人项目/out/production/src/.idea/src.iml
+++ b/个人项目/out/production/src/.idea/src.iml
@ -1,11 +1,14 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<module type="JAVA_MODULE" version="4">
-  <component name="NewModuleRootManager" inherit-compiler-output="true">
-    <exclude-output />
-    <content url="file://$MODULE_DIR$">
-      <sourceFolder url="file://$MODULE_DIR$" isTestSource="false" />
-    </content>
-    <orderEntry type="inheritedJdk" />
-    <orderEntry type="sourceFolder" forTests="false" />
-  </component>
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="CheckStyle-IDEA-Module" serialisationVersion="2">
+    <option name="activeLocationsIds" />
+  </component>
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
 </module>
--- a/个人项目/out/production/src/.idea/vcs.xml
+++ b/个人项目/out/production/src/.idea/vcs.xml
@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
+  </component>
+</project>
--- a/个人项目/out/production/src/doc/个人修改代码.docx
+++ b/个人项目/out/production/src/doc/个人修改代码.docx
--- a/个人项目/out/production/src/src/.idea/workspace.xml
+++ b/个人项目/out/production/src/src/.idea/workspace.xml
@ -0,0 +1,90 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ChangeListManager">
+    <list default="true" id="689ca976-67e0-46b5-87ea-b229588804e5" name="更改" comment="">
+      <change beforePath="$PROJECT_DIR$/../../src/.idea/.gitignore" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/.idea/.name" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/.idea/checkstyle-idea.xml" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/.idea/misc.xml" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/.idea/modules.xml" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/.idea/src.iml" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/.idea/vcs.xml" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/AbstractQuestionGenerator.java" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/Authenticator.java" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/ElementaryGenerator.java" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/HistoryManager.java" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/JuniorGenerator.java" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/Level.java" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/Main.java" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/SeniorGenerator.java" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/User.java" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/out/production/src/.idea/.gitignore" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/out/production/src/.idea/.name" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/out/production/src/.idea/checkstyle-idea.xml" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/out/production/src/.idea/misc.xml" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/out/production/src/.idea/modules.xml" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/out/production/src/.idea/src.iml" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/out/production/src/AbstractQuestionGenerator.class" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/out/production/src/Authenticator.class" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/out/production/src/ElementaryGenerator.class" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/out/production/src/HistoryManager.class" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/out/production/src/JuniorGenerator.class" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/out/production/src/Level.class" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/out/production/src/Main$1.class" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/out/production/src/Main.class" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/out/production/src/SeniorGenerator.class" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/out/production/src/User.class" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/out/production/src/张三1/2025-09-24-08-36-42.txt" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/out/production/src/张三1/2025-09-24-08-36-49.txt" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/out/production/src/张三1/2025-09-24-08-36-54.txt" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/张三1/2025-09-24-08-36-42.txt" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/张三1/2025-09-24-08-36-49.txt" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/张三1/2025-09-24-08-36-54.txt" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/张三1/2025-09-24-20-12-52.txt" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/张三1/2025-09-24-20-22-13.txt" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/张三1/2025-09-24-20-22-19.txt" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/张三1/2025-09-24-20-22-21.txt" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/张三1/2025-09-24-20-22-22.txt" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/张三1/2025-09-24-20-22-57.txt" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/张三1/2025-09-24-20-22-59.txt" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/张三1/2025-09-24-20-23-00.txt" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../src/王五1/2025-09-24-20-13-46.txt" beforeDir="false" />
+    </list>
+    <option name="SHOW_DIALOG" value="false" />
+    <option name="HIGHLIGHT_CONFLICTS" value="true" />
+    <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
+    <option name="LAST_RESOLUTION" value="IGNORE" />
+  </component>
+  <component name="Git.Settings">
+    <option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$/../.." />
+  </component>
+  <component name="ProjectColorInfo"><![CDATA[{
+  "associatedIndex": 5
+}]]></component>
+  <component name="ProjectId" id="33HStCAZngWgCUEIJi9S6BMTqOe" />
+  <component name="ProjectViewState">
+    <option name="hideEmptyMiddlePackages" value="true" />
+    <option name="showLibraryContents" value="true" />
+  </component>
+  <component name="PropertiesComponent"><![CDATA[{
+  "keyToString": {
+    "RunOnceActivity.ShowReadmeOnStart": "true",
+    "RunOnceActivity.git.unshallow": "true",
+    "git-widget-placeholder": "develop",
+    "kotlin-language-version-configured": "true",
+    "last_opened_file_path": "C:/Users/86186/Desktop/个人项目",
+    "应用程序.Main.executor": "Run"
+  }
+}]]></component>
+  <component name="SpellCheckerSettings" RuntimeDictionaries="0" Folders="0" CustomDictionaries="0" DefaultDictionary="应用程序级" UseSingleDictionary="true" transferred="true" />
+  <component name="TaskManager">
+    <task active="true" id="Default" summary="默认任务">
+      <changelist id="689ca976-67e0-46b5-87ea-b229588804e5" name="更改" comment="" />
+      <created>1758972717869</created>
+      <option name="number" value="Default" />
+      <option name="presentableId" value="Default" />
+      <updated>1758972717869</updated>
+    </task>
+    <servers />
+  </component>
+</project>
--- a/个人项目/out/production/src/src/auth/Authenticator.class
+++ b/个人项目/out/production/src/src/auth/Authenticator.class
--- a/个人项目/out/production/src/src/history/HistoryManager.class
+++ b/个人项目/out/production/src/src/history/HistoryManager.class
--- a/个人项目/out/production/src/src/model/Level.class
+++ b/个人项目/out/production/src/src/model/Level.class
--- a/个人项目/out/production/src/src/model/User.class
+++ b/个人项目/out/production/src/src/model/User.class
--- a/个人项目/out/production/src/src/question/AbstractQuestionGenerator.class
+++ b/个人项目/out/production/src/src/question/AbstractQuestionGenerator.class
--- a/个人项目/out/production/src/src/question/ElementaryGenerator.class
+++ b/个人项目/out/production/src/src/question/ElementaryGenerator.class
--- a/个人项目/out/production/src/src/question/JuniorGenerator.class
+++ b/个人项目/out/production/src/src/question/JuniorGenerator.class
--- a/个人项目/out/production/src/src/question/SeniorGenerator.class
+++ b/个人项目/out/production/src/src/question/SeniorGenerator.class
--- a/个人项目/out/production/src/src/start/Main.class
+++ b/个人项目/out/production/src/src/start/Main.class
--- a/个人项目/out/production/src/src/util/Auth.class
+++ b/个人项目/out/production/src/src/util/Auth.class
--- a/个人项目/out/production/src/src/util/Question$1.class
+++ b/个人项目/out/production/src/src/util/Question$1.class
--- a/个人项目/out/production/src/src/util/Question.class
+++ b/个人项目/out/production/src/src/util/Question.class
--- a/个人项目/out/production/src/张三1/2025-09-27-19-01-58.txt
+++ b/个人项目/out/production/src/张三1/2025-09-27-19-01-58.txt
@ -0,0 +1,40 @@
+1. (sqrt(sqrt(27 * 26)))^2 =
+
+2. (65 * ((58 * 28)^2 * 27)) =
+
+3. (((28)^2)^2 - (31)^2) =
+
+4. sqrt(sqrt(sqrt(28 * 97))) =
+
+5. sqrt(2) =
+
+6. sqrt(((68)^2)^2) =
+
+7. ((81)^2 / 29) =
+
+8. (21 - 69)^2 =
+
+9. (65 + (sqrt(58) * (sqrt(10) * 32))) =
+
+10. ((63 - 71)^2 * 4)^2 =
+
+11. sqrt(55 - 74) =
+
+12. (sqrt(sqrt(39)) + 84) =
+
+13. sqrt((85)^2 + 88) =
+
+14. ((sqrt(sqrt(37)))^2)^2 =
+
+15. (39)^2 =
+
+16. ((sqrt(82) - sqrt(35)) / (62 + 85)) =
+
+17. (sqrt(10) * 96) =
+
+18. sqrt((57)^2) =
+
+19. (((76 + 94)^2)^2)^2 =
+
+20. sqrt(91) =
+
--- a/个人项目/out/production/src/张三1/2025-09-27-19-02-43.txt
+++ b/个人项目/out/production/src/张三1/2025-09-27-19-02-43.txt
@ -0,0 +1,60 @@
+1. (sin(9) * (2 * cos(3 * 29))) =
+
+2. (46 - sin(13)) =
+
+3. (cos(26 - sin(39)) / tan(47)) =
+
+4. (((56 / (79 * 71)) * 44) * sin(56)) =
+
+5. cos(tan(82 - 9) + ((27 - 84) + tan(6))) =
+
+6. tan(tan((80 / 80) - (25 - 58))) =
+
+7. cos(tan(sin(99 + 36))) =
+
+8. sin(tan(48)) =
+
+9. sin(sin(68)) =
+
+10. cos(63) =
+
+11. tan(34) =
+
+12. (79 * (12 + cos(sin(66)))) =
+
+13. tan(cos(55 - 43) * cos(18)) =
+
+14. sin(23) =
+
+15. cos(43) =
+
+16. (cos(cos(45)) / 20) =
+
+17. (tan(72) * tan(91)) =
+
+18. cos(sin(tan(tan(17)))) =
+
+19. (((sin(5) * tan(27)) * tan(tan(84))) - 48) =
+
+20. (sin(56) * 7) =
+
+21. (cos(cos(11 / 77)) * (sin(cos(37)) + tan(sin(8)))) =
+
+22. tan(49) =
+
+23. (cos(cos(31)) / (67 / sin(73 / 82))) =
+
+24. (57 / ((53 - (44 / 32)) * tan(cos(56)))) =
+
+25. sin(4) =
+
+26. sin(cos(38)) =
+
+27. sin(39) =
+
+28. tan(cos(sin(53))) =
+
+29. tan(87) =
+
+30. sin(86 * sin(27)) =
+
--- a/个人项目/out/production/src/张三1/2025-09-27-19-03-08.txt
+++ b/个人项目/out/production/src/张三1/2025-09-27-19-03-08.txt
@ -0,0 +1,60 @@
+1. (88 / 49) =
+
+2. ((70 - 95) - (25 + 91)) =
+
+3. (69 * 98) =
+
+4. (95 - (73 - (13 + (42 / 59)))) =
+
+5. (((73 - 71) / 59) - 65) =
+
+6. ((77 + 41) * 57) =
+
+7. (64 / (12 - (55 * (14 / 94)))) =
+
+8. (((21 / 80) + 78) / 23) =
+
+9. (5 - 10) =
+
+10. (92 / (64 / 86)) =
+
+11. ((7 - 31) - 34) =
+
+12. ((95 * 96) - 23) =
+
+13. ((32 * 31) / 10) =
+
+14. (51 + (48 * 9)) =
+
+15. (86 + (56 + 6)) =
+
+16. (87 * (51 + ((82 * 79) - 54))) =
+
+17. (15 - 59) =
+
+18. (9 * (43 * 47)) =
+
+19. ((78 + 98) / (85 + 38)) =
+
+20. (59 + (61 / 44)) =
+
+21. (7 - (36 / (22 * 22))) =
+
+22. (62 / 11) =
+
+23. ((69 * (60 * 65)) - (37 + 83)) =
+
+24. (59 + 8) =
+
+25. ((54 / (51 - (39 - 90))) / 13) =
+
+26. (83 + 94) =
+
+27. (31 * 93) =
+
+28. (((52 + 22) + (40 + 50)) / 63) =
+
+29. ((78 - ((74 / 60) - 41)) / 11) =
+
+30. (35 / 8) =
+
--- a/个人项目/out/production/src/张三1/2025-09-27-19-29-03.txt
+++ b/个人项目/out/production/src/张三1/2025-09-27-19-29-03.txt
@ -0,0 +1,60 @@
+1. 56 - 45 =
+
+2. (65 - 9) * 30 =
+
+3. (80 / 88) * 61 =
+
+4. 41 * ((88 / 37) - 81) =
+
+5. 75 * (55 / (73 * (67 / 23))) =
+
+6. 63 - ((23 - 29) + 14) =
+
+7. 27 / (27 + 82) =
+
+8. 8 / 54 =
+
+9. 25 - (((41 - 51) - 13) / 91) =
+
+10. (67 / 53) - (2 - 62) =
+
+11. 82 + 8 =
+
+12. 74 / (21 - (77 - (95 + 3))) =
+
+13. 15 / (24 / 50) =
+
+14. 71 * (55 / (93 + (5 + 16))) =
+
+15. 27 * ((93 + (83 * 34)) - 22) =
+
+16. 85 + 95 =
+
+17. 72 / 47 =
+
+18. 74 + 1 =
+
+19. (10 * 81) - 22 =
+
+20. 84 / 89 =
+
+21. 51 * 43 =
+
+22. 67 / (34 * ((89 - 92) - 28)) =
+
+23. 8 + (((25 * 7) * 36) * 20) =
+
+24. 96 / 45 =
+
+25. 3 + (23 / 10) =
+
+26. (26 - (60 / 76)) / 92 =
+
+27. 37 * (61 - (42 * 2)) =
+
+28. 4 * 67 =
+
+29. 14 - 53 =
+
+30. 83 * (86 * 79) =
+
--- a/个人项目/out/production/src/张三1/2025-09-27-19-29-06.txt
+++ b/个人项目/out/production/src/张三1/2025-09-27-19-29-06.txt
@ -0,0 +1,60 @@
+1. 72 + 22 =
+
+2. (29 / 23) + 77 =
+
+3. 22 * 57 =
+
+4. 36 - 91 =
+
+5. 38 / (((17 / 10) - 46) * 14) =
+
+6. 77 * (39 * ((42 + 86) / 64)) =
+
+7. (80 * (31 - (39 * 49))) - 39 =
+
+8. 21 / 94 =
+
+9. 56 + 11 =
+
+10. ((80 + (15 - 81)) - 65) / 69 =
+
+11. 37 * 51 =
+
+12. 35 / 77 =
+
+13. (57 * 88) * 15 =
+
+14. ((79 * (97 / 80)) - 99) / 32 =
+
+15. (71 / (34 - 25)) - 77 =
+
+16. 40 * ((98 - (2 - 42)) + 15) =
+
+17. 79 + (22 * (10 * 71)) =
+
+18. (9 + 53) * 90 =
+
+19. 50 / 4 =
+
+20. 28 * (28 * 19) =
+
+21. 57 + 60 =
+
+22. ((100 * (20 + 23)) - 33) - 7 =
+
+23. (42 + 92) / 51 =
+
+24. 20 * ((72 - (19 / 79)) - 76) =
+
+25. ((51 + (30 * 44)) * 72) * 49 =
+
+26. 26 + 74 =
+
+27. (51 / 94) / 48 =
+
+28. 38 * ((32 * 69) - (70 * 28)) =
+
+29. 5 * (22 - (21 / 9)) =
+
+30. 87 * 60 =
+
--- a/个人项目/out/production/src/张三1/2025-09-27-19-35-42.txt
+++ b/个人项目/out/production/src/张三1/2025-09-27-19-35-42.txt
@ -0,0 +1,60 @@
+1. 54 - 92 =
+
+2. 26 / ((9 / 36) / 88) =
+
+3. ((23 * (60 * 61)) * 50) + 91 =
+
+4. (15 / 12) / 48 =
+
+5. 17 * 45 =
+
+6. ((71 * 44) + 36) - (95 + 68) =
+
+7. (64 * 17) / 23 =
+
+8. 91 + (((84 * 4) - 48) - 58) =
+
+9. 3 * (76 + ((51 / 40) - 90)) =
+
+10. 76 / (((94 * 46) / 70) - 47) =
+
+11. 69 / ((78 + (96 + 35)) * 17) =
+
+12. 52 - 29 =
+
+13. 69 / 87 =
+
+14. 11 - 20 =
+
+15. (100 / 59) + 87 =
+
+16. 22 / (47 + 79) =
+
+17. 88 / (18 + (65 + 20)) =
+
+18. 79 / 20 =
+
+19. 45 - 75 =
+
+20. 22 + 82 =
+
+21. 30 - (28 * 36) =
+
+22. (42 * ((50 - 29) / 66)) * 22 =
+
+23. (85 + 48) + (6 * (57 / 6)) =
+
+24. 35 + 77 =
+
+25. 93 - 98 =
+
+26. 30 / ((60 - 16) * 24) =
+
+27. 56 - 32 =
+
+28. 66 * 82 =
+
+29. (5 - (51 - (31 * 82))) + 86 =
+
+30. 68 - 37 =
+
--- a/个人项目/out/production/src/张三1/2025-09-27-19-35-57.txt
+++ b/个人项目/out/production/src/张三1/2025-09-27-19-35-57.txt
@ -0,0 +1,60 @@
+1. 79 + 100 =
+
+2. (29 + (33 + (33 / 70))) + 87 =
+
+3. 88 / (((31 - 16) - 68) * 23) =
+
+4. 12 * 8 =
+
+5. 62 / (35 - 3) =
+
+6. (((83 - 14) - 62) / 43) - 60 =
+
+7. (91 * (52 * 50)) + 19 =
+
+8. 65 - (87 + 19) =
+
+9. 66 / 51 =
+
+10. 87 + 21 =
+
+11. (13 + 10) / 70 =
+
+12. 59 / 25 =
+
+13. (43 + 50) / (75 - (94 - 76)) =
+
+14. 44 + (73 * 43) =
+
+15. 90 + 66 =
+
+16. 15 + (54 * 25) =
+
+17. 71 / (51 + 93) =
+
+18. 84 / ((35 * 63) + (41 / 88)) =
+
+19. 88 - (26 / 61) =
+
+20. 3 / 94 =
+
+21. 44 - ((59 * 49) / 78) =
+
+22. 90 / 76 =
+
+23. 27 / 33 =
+
+24. 29 - 23 =
+
+25. (((68 * 95) - 88) / 33) + 2 =
+
+26. 77 - ((3 + 90) + 97) =
+
+27. 3 / 45 =
+
+28. 41 + (82 / ((3 + 40) * 60)) =
+
+29. 13 + 50 =
+
+30. (74 - (27 - 7)) / 14 =
+
--- a/个人项目/out/production/src/张三1/2025-09-27-19-35-58.txt
+++ b/个人项目/out/production/src/张三1/2025-09-27-19-35-58.txt
@ -0,0 +1,60 @@
+1. (63 * 84) / 16 =
+
+2. ((74 / (100 / 13)) * 94) + 10 =
+
+3. 86 + 41 =
+
+4. 43 + (66 / (92 / 46)) =
+
+5. 56 * (((33 / 23) / 6) + 16) =
+
+6. 23 - 24 =
+
+7. 59 + 3 =
+
+8. 95 / 9 =
+
+9. 45 - 25 =
+
+10. (88 / 51) - 63 =
+
+11. 76 / ((71 + (68 / 14)) + 26) =
+
+12. 94 * 19 =
+
+13. (46 + 96) + 92 =
+
+14. 88 * (78 + 13) =
+
+15. (21 * 48) - (54 - 3) =
+
+16. (5 - 88) - 48 =
+
+17. 93 * (99 * ((78 + 28) / 58)) =
+
+18. 75 / ((13 - (87 + 47)) + 36) =
+
+19. (46 / 63) / 46 =
+
+20. 44 + (70 / 8) =
+
+21. 77 - (83 - 33) =
+
+22. 86 * (2 / 52) =
+
+23. (64 / 42) / (66 / 77) =
+
+24. 43 + 86 =
+
+25. 52 / (38 - 33) =
+
+26. 9 * 35 =
+
+27. 27 + (((74 - 22) * 23) * 25) =
+
+28. 85 - 19 =
+
+29. 2 + (((84 / 77) - 53) + 33) =
+
+30. 49 * (58 * 31) =
+
--- a/个人项目/out/production/src/张三1/2025-09-27-19-36-05.txt
+++ b/个人项目/out/production/src/张三1/2025-09-27-19-36-05.txt
@ -0,0 +1,40 @@
+1. 70 + (sin(82) * (tan(45) * tan(92))) =
+
+2. sin(tan(69 / 44) / 62) =
+
+3. sin(tan(5 - 36)) =
+
+4. cos(87 + 21) + 53 =
+
+5. tan(34) =
+
+6. sin(tan(12)) =
+
+7. cos(10) =
+
+8. sin(57) =
+
+9. tan(1) =
+
+10. sin(tan(sin(76))) * (3 + 34) =
+
+11. sin((tan(94) * 80) * (62 / (10 / 14))) =
+
+12. 96 - sin(sin(26 - 64)) =
+
+13. (48 / 97) / cos(17) =
+
+14. tan(cos((89 + 11) - 57)) =
+
+15. sin(100) =
+
+16. cos(tan(63 / sin(91))) =
+
+17. tan(9) =
+
+18. cos((48 * 1) / cos(51)) - tan(68) =
+
+19. 99 * cos(37) =
+
+20. sin(sin(9) * 69) - (88 * (sin(57) - 95)) =
+
--- a/个人项目/out/production/src/张三1/2025-09-27-19-45-19.txt
+++ b/个人项目/out/production/src/张三1/2025-09-27-19-45-19.txt
@ -0,0 +1,60 @@
+1. (74 - 30) + 1 =
+
+2. 86 * 73 =
+
+3. (64 + (80 / (5 * 24))) - 46 =
+
+4. 7 + 55 =
+
+5. (20 / 48) + 10 =
+
+6. 81 / 69 =
+
+7. 84 + (50 * 79) =
+
+8. (79 - 56) + 23 =
+
+9. 97 + 21 =
+
+10. 86 / 31 =
+
+11. 4 - 56 =
+
+12. 37 - 53 =
+
+13. 56 / 36 =
+
+14. 83 * (29 / 69) =
+
+15. 71 / 64 =
+
+16. 71 - 31 =
+
+17. 94 - (58 + 36) =
+
+18. (55 + 100) + (98 - (60 - 88)) =
+
+19. (27 + 61) * (72 - 19) =
+
+20. (69 / ((51 / 28) + 70)) - 66 =
+
+21. 48 - 4 =
+
+22. (69 + 77) * (31 / 73) =
+
+23. 22 - (28 - 79) =
+
+24. 41 - 14 =
+
+25. (16 / 8) - 36 =
+
+26. ((23 * 38) - 6) + 74 =
+
+27. (14 - 34) + 39 =
+
+28. 21 + 76 =
+
+29. (82 + (32 + 67)) * 93 =
+
+30. 61 + 82 =
+
--- a/个人项目/out/production/src/张三2/2025-09-26-11-46-26.txt
+++ b/个人项目/out/production/src/张三2/2025-09-26-11-46-26.txt
@ -0,0 +1,20 @@
+1. 8 =
+
+2. (78*(77*(34-69))) =
+
+3. 11 =
+
+4. ((79+(91+7))+8) =
+
+5. 85 =
+
+6. ((78/76)*29) =
+
+7. 72 =
+
+8. 77 =
+
+9. 4 =
+
+10. 86 =
+
--- a/个人项目/out/production/src/张三2/2025-09-26-11-46-28.txt
+++ b/个人项目/out/production/src/张三2/2025-09-26-11-46-28.txt
@ -0,0 +1,40 @@
+1. ((((94*51)*80)-70)+87) =
+
+2. 69 =
+
+3. (31-(((20-96)-1)+56)) =
+
+4. (29/(19*(70/(80/45)))) =
+
+5. 54 =
+
+6. (94+(((11*5)/30)/94)) =
+
+7. (95*81) =
+
+8. 62 =
+
+9. (78/(77+72)) =
+
+10. 31 =
+
+11. 46 =
+
+12. (22+(92*(45+(61+1)))) =
+
+13. (17+12) =
+
+14. (80*((60-(44/37))+31)) =
+
+15. (90-(56*65)) =
+
+16. 89 =
+
+17. (62*(95*32)) =
+
+18. (40-21) =
+
+19. 87 =
+
+20. (10-(98-58)) =
+
--- a/个人项目/out/production/src/张三2/2025-09-26-11-46-39.txt
+++ b/个人项目/out/production/src/张三2/2025-09-26-11-46-39.txt
@ -0,0 +1,40 @@
+1. 85 =
+
+2. (88/68) =
+
+3. 42 =
+
+4. 97 =
+
+5. 5 =
+
+6. (48-(((92/15)+76)+78)) =
+
+7. (33*95) =
+
+8. 26 =
+
+9. (6-((49/(21*31))*77)) =
+
+10. (((53-(62+69))-43)*4) =
+
+11. 29 =
+
+12. 35 =
+
+13. 40 =
+
+14. 45 =
+
+15. (9/76) =
+
+16. ((57-(77/88))+34) =
+
+17. ((31+(85-82))+(75/67)) =
+
+18. (85+5) =
+
+19. 39 =
+
+20. 95 =
+
--- a/个人项目/out/production/src/张三2/2025-09-26-11-46-45.txt
+++ b/个人项目/out/production/src/张三2/2025-09-26-11-46-45.txt
@ -0,0 +1,60 @@
+1. 14 =
+
+2. ((88/(69*(24+100)))+20) =
+
+3. (((12/(30/99))/98)+66) =
+
+4. (11*((47/(76*46))-75)) =
+
+5. 76 =
+
+6. 55 =
+
+7. 34 =
+
+8. 46 =
+
+9. 37 =
+
+10. 49 =
+
+11. 60 =
+
+12. 54 =
+
+13. 9 =
+
+14. ((85/77)/1) =
+
+15. 63 =
+
+16. (6*18) =
+
+17. (62*(58+29)) =
+
+18. 72 =
+
+19. ((16*((42+35)/2))/13) =
+
+20. 62 =
+
+21. 73 =
+
+22. (38+(56-44)) =
+
+23. ((58-6)+(32*3)) =
+
+24. ((9*(87/85))/(37+8)) =
+
+25. (71/((86-2)+62)) =
+
+26. 65 =
+
+27. 61 =
+
+28. 13 =
+
+29. ((42*75)*(84+82)) =
+
+30. (16+42) =
+
--- a/个人项目/out/production/src/李四1/2025-09-27-19-29-33.txt
+++ b/个人项目/out/production/src/李四1/2025-09-27-19-29-33.txt
@ -0,0 +1,60 @@
+1. sqrt((sqrt(70))^2) + (94 / 4)^2 =
+
+2. (71 * (sqrt(5))^2) - (14)^2 =
+
+3. (4)^2 * 87 =
+
+4. sqrt(66) =
+
+5. (99)^2 - 51 =
+
+6. sqrt((24)^2) =
+
+7. 90 - (74)^2 =
+
+8. sqrt(73) =
+
+9. ((sqrt(39))^2)^2 - 79 =
+
+10. (14 - (37)^2) * (12)^2 =
+
+11. (((89)^2)^2 * 45) + 89 =
+
+12. (49)^2 =
+
+13. ((47)^2)^2 =
+
+14. ((7)^2 + 32) / sqrt(8) =
+
+15. sqrt((88 + 48)^2) =
+
+16. (sqrt(69) + 4)^2 / sqrt(100) =
+
+17. (50)^2 =
+
+18. (57)^2 =
+
+19. (61 / (sqrt(78))^2)^2 =
+
+20. (78)^2 =
+
+21. sqrt(75) =
+
+22. sqrt(((92)^2 - (87 / 39))^2) =
+
+23. sqrt(6) =
+
+24. ((30)^2 - 61) / 2 =
+
+25. (sqrt(94 - sqrt(71)))^2 =
+
+26. sqrt(57) =
+
+27. (74)^2 =
+
+28. 56 + ((6)^2 / 55) =
+
+29. sqrt(sqrt(((79)^2)^2)) =
+
+30. sqrt((6)^2) =
+
--- a/个人项目/out/production/src/李四3/2025-09-27-19-29-45.txt
+++ b/个人项目/out/production/src/李四3/2025-09-27-19-29-45.txt
@ -0,0 +1,60 @@
+1. (sqrt((11 + 76)^2))^2 =
+
+2. (64 + 54) - sqrt(sqrt(61)) =
+
+3. ((sqrt(9))^2)^2 / 26 =
+
+4. ((95 * 48) / 50)^2 =
+
+5. sqrt(74) =
+
+6. sqrt((sqrt(26) + 52) * (95 + 100)^2) =
+
+7. sqrt(sqrt(3) + 58) =
+
+8. sqrt(((21 * 21) * (52 / 38)) + 9) =
+
+9. sqrt((29)^2) =
+
+10. (sqrt(100))^2 =
+
+11. sqrt((46)^2 / 60) =
+
+12. sqrt(98) + (((2)^2 + 38) + 63) =
+
+13. sqrt(sqrt(64)) =
+
+14. 92 + (69)^2 =
+
+15. sqrt(61) =
+
+16. sqrt(42) =
+
+17. ((28)^2 / 39)^2 =
+
+18. sqrt(25) =
+
+19. (20)^2 - (68)^2 =
+
+20. (sqrt(86) / 5)^2 / 9 =
+
+21. (77)^2 - (52)^2 =
+
+22. sqrt(4 - sqrt(86 / 59)) =
+
+23. sqrt((sqrt(80) + 60) / (75 - 7)) =
+
+24. (88)^2 * 80 =
+
+25. sqrt(25) - sqrt(52) =
+
+26. (sqrt(73))^2 =
+
+27. (15)^2 =
+
+28. sqrt(((76)^2)^2) =
+
+29. sqrt(sqrt(sqrt(3) / (90)^2)) =
+
+30. sqrt(8) =
+
--- a/个人项目/out/production/src/王五1/2025-09-24-20-13-46.txt
+++ b/个人项目/out/production/src/王五1/2025-09-24-20-13-46.txt
@ -1,20 +1,20 @@
-1. (96/cos(76)) =
-
-2. sin(98) =
-
-3. cos(43) =
-
-4. tan(86) =
-
-5. sin(cos((sin(92)/(12+27)))) =
-
-6. cos(3) =
-
-7. cos(84) =
-
-8. tan(79) =
-
-9. tan(29) =
-
-10. cos(((98-51)/sin(35))) =
-
+1. (96/cos(76)) =
+
+2. sin(98) =
+
+3. cos(43) =
+
+4. tan(86) =
+
+5. sin(cos((sin(92)/(12+27)))) =
+
+6. cos(3) =
+
+7. cos(84) =
+
+8. tan(79) =
+
+9. tan(29) =
+
+10. cos(((98-51)/sin(35))) =
+
--- a/个人项目/src/auth/Authenticator.java
+++ b/个人项目/src/auth/Authenticator.java
@ -0,0 +1,60 @@
+package src.auth;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Scanner;
+import src.model.Level;
+import src.model.User;
+
+/**
+ * 用户认证和权限管理类.
+ * 负责用户登录验证和题目难度切换功能.
+ */
+public class Authenticator {
+
+  private final Map<String, User> users = new HashMap<>();
+
+  /**
+   * 构造函数，初始化用户数据.
+   * 预置了不同难度级别的测试用户账户.
+   */
+  public Authenticator() {
+    users.put("张三1", new User("张三1", "123", Level.ELEMENTARY));
+    users.put("张三2", new User("张三2", "123", Level.ELEMENTARY));
+    users.put("张三3", new User("张三3", "123", Level.ELEMENTARY));
+    users.put("李四1", new User("李四1", "123", Level.JUNIOR));
+    users.put("李四2", new User("李四2", "123", Level.JUNIOR));
+    users.put("李四3", new User("李四3", "123", Level.JUNIOR));
+    users.put("王五1", new User("王五1", "123", Level.SENIOR));
+    users.put("王五2", new User("王五2", "123", Level.SENIOR));
+    users.put("王五3", new User("王五3", "123", Level.SENIOR));
+  }
+
+  /**
+   * 用户登录验证.
+   * 通过控制台输入获取用户名和密码进行验证.
+   *
+   * @return 登录成功的用户对象，登录失败返回null
+   */
+  public User login() {
+    Scanner scanner = new Scanner(System.in);
+    System.out.print("请输入用户名和密码（空格隔开）：");
+    String inputLine = scanner.nextLine().trim();
+    String[] input = inputLine.split("\\s+");
+
+    if (input.length != 2) {
+      System.out.println("请输入正确的用户名、密码");
+      return null;
+    }
+
+    User user = users.get(input[0]);
+    if (user != null && user.getPassword().equals(input[1])) {
+      return user;
+    }
+
+    System.out.println("请输入正确的用户名、密码");
+    return null;
+  }
+}
+
+
--- a/个人项目/src/history/HistoryManager.java
+++ b/个人项目/src/history/HistoryManager.java
@ -0,0 +1,140 @@
+package src.history;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+import src.model.User;
+import src.question.AbstractQuestionGenerator;
+import src.util.Question;
+
+/**
+ * 历史记录管理器.
+ * 负责管理用户的题目历史记录，包括去重检查和文件保存功能.
+ */
+public class HistoryManager {
+
+  private final Set<String> existingQuestions = new HashSet<>();
+
+  /**
+   * 构造函数.
+   * 初始化历史记录管理器，读取用户已有的题目文件.
+   *
+   * @param username 用户名
+   */
+  public HistoryManager(String username) {
+    File folder = new File(username);
+    if (!folder.exists() && !folder.mkdir()) {
+      System.err.println("无法创建文件夹: " + username);
+    }
+    File[] files = folder.listFiles();
+    if (files != null) {
+      for (File file : files) {
+        if (file.isFile() && file.getName().endsWith(".txt")) {
+          try (BufferedReader reader = new BufferedReader(new FileReader(file))) {
+            String line;
+            while ((line = reader.readLine()) != null) {
+              line = line.trim();
+              if (line.matches("^\\d+\\..*")) {
+                int dotIndex = line.indexOf('.');
+                String question = line.substring(dotIndex + 1).trim();
+                if (question.endsWith("=")) {
+                  question = question.substring(0, question.length() - 1).trim();
+                }
+                existingQuestions.add(question);
+              }
+            }
+          } catch (IOException e) {
+            System.err.println("读取文件出错: " + file.getName());
+          }
+        }
+      }
+    }
+  }
+
+  /**
+   * 检查题目是否重复.
+   *
+   * @param question 要检查的题目
+   * @return 如果题目已存在返回true，否则返回false
+   */
+  public boolean isDuplicate(String question) {
+    return existingQuestions.contains(question);
+  }
+
+  /**
+   * 添加题目到历史记录.
+   *
+   * @param question 要添加的题目
+   */
+  public void add(String question) {
+    existingQuestions.add(question);
+  }
+
+  /**
+   * 生成不重复的历史题目列表.
+   *
+   * @param numQuestions 需要生成的题目数量
+   * @param generator 题目生成器
+   * @return 生成的题目列表
+   */
+  public List<String> getQuestion(Integer numQuestions,
+      AbstractQuestionGenerator generator) {
+    List<String> questions = new ArrayList<>();
+    boolean failed = false;
+    for (int i = 0; i < numQuestions; i++) {
+      String question;
+      int attempts = 0;
+      final int maxAttempts = 100;
+      do {
+        question = Question.generateQuestion(generator);
+        attempts++;
+        if (attempts > maxAttempts) {
+          System.out.println("无法生成足够独特的题目");
+          failed = true;
+          break;
+        }
+      } while (isDuplicate(question));
+
+      if (failed) {
+        break;
+      }
+      questions.add(question);
+      add(question);
+    }
+    return questions;
+  }
+
+  /**
+   * 保存题目列表到文件.
+   *
+   * @param questions 题目列表
+   * @param user 用户对象
+   */
+  public void saveFile(List<String> questions, User user) {
+    if (questions.isEmpty()) {
+      return;
+    }
+    Date now = new Date();
+    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");
+    String filename = sdf.format(now) + ".txt";
+    File folder = new File(user.getUsername());
+    File file = new File(folder, filename);
+
+    try (PrintWriter writer = new PrintWriter(file)) {
+      for (int i = 0; i < questions.size(); i++) {
+        writer.println((i + 1) + ". " + questions.get(i));
+        writer.println();
+      }
+    } catch (IOException e) {
+      System.err.println("保存文件出错: " + e.getMessage());
+    }
+  }
+}
--- a/个人项目/src/model/Level.java
+++ b/个人项目/src/model/Level.java
@ -0,0 +1,47 @@
+package src.model;
+
+/**
+ * 题目难度级别枚举.
+ * 定义了小学、初中、高中三个难度级别.
+ */
+public enum Level {
+
+  /**
+   * 小学难度级别.
+   */
+  ELEMENTARY("小学"),
+
+  /**
+   * 初中难度级别.
+   */
+  JUNIOR("初中"),
+
+  /**
+   * 高中难度级别.
+   */
+  SENIOR("高中");
+
+  /**
+   * 难度级别的中文名称.
+   */
+  private final String name;
+
+  /**
+   * 枚举构造函数.
+   *
+   * @param name 难度级别的中文名称
+   */
+  Level(String name) {
+    this.name = name;
+  }
+
+  /**
+   * 获取难度级别的中文名称.
+   *
+   * @return 难度级别的中文名称
+   */
+  public String getName() {
+    return name;
+  }
+}
+
--- a/个人项目/src/model/User.java
+++ b/个人项目/src/model/User.java
@ -0,0 +1,39 @@
+package src.model;
+
+/**
+ * 用户信息类.
+ * 封装用户的基本信息，包括用户名、密码和初始难度级别.
+ */
+
+public class User {
+
+  private final String username;
+  private final String password;
+  private final Level initialLevel;
+
+  /**
+   * 构造函数.
+   *
+   * @param username 用户名
+   * @param password 密码
+   * @param initialLevel 初始难度级别
+   */
+
+  public User(String username, String password, Level initialLevel) {
+    this.username = username;
+    this.password = password;
+    this.initialLevel = initialLevel;
+  }
+
+  public String getPassword() {
+    return password;
+  }
+
+  public String getUsername() {
+    return username;
+  }
+
+  public Level getInitialLevel() {
+    return initialLevel;
+  }
+}
--- a/个人项目/src/question/AbstractQuestionGenerator.java
+++ b/个人项目/src/question/AbstractQuestionGenerator.java
@ -0,0 +1,57 @@
+package src.question;
+
+import java.util.Random;
+import src.model.Level;
+
+/**
+ * 抽象类题目生成器类.
+ * 生成对应难度的题目.
+ */
+public abstract class AbstractQuestionGenerator {
+
+  protected final Random random = new Random();
+  protected final Level level;
+
+  /**
+   * 构造函数.
+   *
+   * @param level 题目难度级别
+   */
+  public AbstractQuestionGenerator(Level level) {
+    this.level = level;
+  }
+
+  /**
+   * 生成随机数字.
+   *
+   * @return 1-100之间的随机整数
+   */
+  protected int getRandomNumber() {
+    return random.nextInt(100) + 1;
+  }
+
+  /**
+   * 获取随机二元运算符.
+   *
+   * @return 随机选择的运算符（+、-、*、/）
+   */
+  protected String getRandomBinaryOp() {
+    String[] ops = {"+", "-", "*", "/"};
+    return ops[random.nextInt(ops.length)];
+  }
+
+  /**
+   * 生成表达式.
+   *
+   * @return 生成的数学表达式字符串
+   */
+  public abstract String generateExpression();
+
+  /**
+   * 检查表达式是否符合当前难度级别的要求.
+   *
+   * @param expression 要检查的表达式
+   * @return 如果表达式符合级别要求返回true，否则返回false
+   */
+  public abstract boolean isValidForLevel(String expression);
+}
--- a/个人项目/src/question/ElementaryGenerator.java
+++ b/个人项目/src/question/ElementaryGenerator.java
@ -0,0 +1,58 @@
+package src.question;
+
+import src.model.Level;
+
+/**
+ * 小学级别题目生成器.
+ * 生成适合小学难度的数学表达式，包含基本四则运算.
+ */
+public class ElementaryGenerator extends AbstractQuestionGenerator {
+
+  /**
+   * 构造函数.
+   * 初始化小学难度级别的题目生成器.
+   */
+  public ElementaryGenerator() {
+    super(Level.ELEMENTARY);
+  }
+
+  /**
+   * 生成小学难度的数学表达式.
+   * 使用递归方式生成包含括号的四则运算表达式.
+   *
+   * @return 生成的数学表达式字符串
+   */
+  @Override
+  public String generateExpression() {
+    return generateSub(4);
+  }
+
+  /**
+   * 递归生成子表达式.
+   * 根据深度参数控制表达式复杂度，随机生成数字或二元运算.
+   *
+   * @param depth 当前递归深度
+   * @return 生成的子表达式字符串
+   */
+  private String generateSub(int depth) {
+    if ((depth == 0 || random.nextDouble() < 0.4) && depth != 4) {
+      return String.valueOf(getRandomNumber());
+    }
+    String left = generateSub(depth - 1);
+    String op = getRandomBinaryOp();
+    String right = generateSub(depth - 1);
+    return "(" + left + " " + op + " " + right + ")";
+  }
+
+  /**
+   * 验证表达式是否符合小学难度要求.
+   * 小学级别对表达式没有特殊限制，始终返回true.
+   *
+   * @param expression 要验证的表达式
+   * @return 总是返回true，表示表达式有效
+   */
+  @Override
+  public boolean isValidForLevel(String expression) {
+    return true;
+  }
+}
--- a/个人项目/src/question/JuniorGenerator.java
+++ b/个人项目/src/question/JuniorGenerator.java
@ -0,0 +1,99 @@
+package src.question;
+
+import src.model.Level;
+
+/**
+ * 初中级别题目生成器.
+ * 生成适合初中难度的数学表达式，包含四则运算、平方根和平方运算.
+ */
+public class JuniorGenerator extends AbstractQuestionGenerator {
+
+  /**
+   * 平方根生成概率阈值.
+   */
+  private static final double SQRT_PROBABILITY = 0.75;
+
+  /**
+   * 平方运算生成概率阈值.
+   */
+  private static final double SQUARE_PROBABILITY = 0.5;
+
+  /**
+   * 叶子节点生成概率.
+   */
+  private static final double LEAF_PROBABILITY = 0.4;
+
+  /**
+   * 最大递归深度.
+   */
+  private static final int MAX_DEPTH = 4;
+
+  /**
+   * 构造函数.
+   * 初始化初中难度级别的题目生成器.
+   */
+  public JuniorGenerator() {
+    super(Level.JUNIOR);
+  }
+
+  /**
+   * 生成初中难度的数学表达式.
+   * 使用递归方式生成包含平方根和平方运算的表达式.
+   *
+   * @return 生成的数学表达式字符串
+   */
+  @Override
+  public String generateExpression() {
+    return generateSub(MAX_DEPTH);
+  }
+
+  /**
+   * 递归生成子表达式.
+   * 根据深度参数和随机概率生成数字、二元运算、平方根或平方运算.
+   *
+   * @param depth 当前递归深度
+   * @return 生成的子表达式字符串
+   */
+  private String generateSub(int depth) {
+    if (depth == 0 || random.nextDouble() < LEAF_PROBABILITY) {
+      return String.valueOf(getRandomNumber());
+    }
+
+    double randomValue = random.nextDouble();
+    if (randomValue < SQUARE_PROBABILITY) {
+      // 生成二元运算
+      String left = generateSub(depth - 1);
+      String op = getRandomBinaryOp();
+      String right = generateSub(depth - 1);
+      return "(" + left + " " + op + " " + right + ")";
+    } else if (randomValue < SQRT_PROBABILITY) {
+      // 生成平方根运算
+      String sub = generateSub(depth - 1);
+      if (sub.charAt(0) == '(' && sub.charAt(sub.length() - 1) == ')') {
+        return "sqrt" + sub;
+      } else {
+        return "sqrt(" + sub + ")";
+      }
+    } else {
+      // 生成平方运算
+      String sub = generateSub(depth - 1);
+      if (sub.charAt(0) == '(' && sub.charAt(sub.length() - 1) == ')') {
+        return sub + "^2";
+      } else {
+        return "(" + sub + ")^2";
+      }
+    }
+  }
+
+  /**
+   * 验证表达式是否符合初中难度要求.
+   * 初中级别要求表达式必须包含平方根或平方运算.
+   *
+   * @param expression 要验证的表达式
+   * @return 如果表达式包含平方根或平方运算返回true，否则返回false
+   */
+  @Override
+  public boolean isValidForLevel(String expression) {
+    return expression.contains("sqrt") || expression.contains("^2");
+  }
+}
--- a/个人项目/src/question/SeniorGenerator.java
+++ b/个人项目/src/question/SeniorGenerator.java
@ -0,0 +1,92 @@
+package src.question;
+
+import src.model.Level;
+
+/**
+ * 高中级别题目生成器.
+ * 生成适合高中难度的数学表达式，包含四则运算和三角函数运算.
+ */
+public class SeniorGenerator extends AbstractQuestionGenerator {
+
+  /**
+   * 二元运算生成概率阈值.
+   */
+  private static final double BINARY_OP_PROBABILITY = 0.5;
+
+  /**
+   * 叶子节点生成概率.
+   */
+  private static final double LEAF_PROBABILITY = 0.4;
+
+  /**
+   * 最大递归深度.
+   */
+  private static final int MAX_DEPTH = 4;
+
+  /**
+   * 支持的三角函数列表.
+   */
+  private static final String[] TRIGONOMETRIC_FUNCTIONS = {"sin", "cos", "tan"};
+
+  /**
+   * 构造函数.
+   * 初始化高中难度级别的题目生成器.
+   */
+  public SeniorGenerator() {
+    super(Level.SENIOR);
+  }
+
+  /**
+   * 生成高中难度的数学表达式.
+   * 使用递归方式生成包含三角函数的表达式.
+   *
+   * @return 生成的数学表达式字符串
+   */
+  @Override
+  public String generateExpression() {
+    return generateSub(MAX_DEPTH);
+  }
+
+  /**
+   * 递归生成子表达式.
+   * 根据深度参数和随机概率生成数字、二元运算或三角函数运算.
+   *
+   * @param depth 当前递归深度
+   * @return 生成的子表达式字符串
+   */
+  private String generateSub(int depth) {
+    if (depth == 0 || random.nextDouble() < LEAF_PROBABILITY) {
+      return String.valueOf(getRandomNumber());
+    }
+
+    double randomValue = random.nextDouble();
+    if (randomValue < BINARY_OP_PROBABILITY) {
+      // 生成二元运算
+      String left = generateSub(depth - 1);
+      String op = getRandomBinaryOp();
+      String right = generateSub(depth - 1);
+      return "(" + left + " " + op + " " + right + ")";
+    } else {
+      // 生成三角函数运算
+      String func = TRIGONOMETRIC_FUNCTIONS[random.nextInt(TRIGONOMETRIC_FUNCTIONS.length)];
+      String sub = generateSub(depth - 1);
+      if (sub.charAt(0) == '(' && sub.charAt(sub.length() - 1) == ')') {
+        return func + sub;
+      } else {
+        return func + "(" + sub + ")";
+      }
+    }
+  }
+
+  /**
+   * 验证表达式是否符合高中难度要求.
+   * 高中级别要求表达式必须包含三角函数.
+   *
+   * @param expression 要验证的表达式
+   * @return 如果表达式包含三角函数返回true，否则返回false
+   */
+  @Override
+  public boolean isValidForLevel(String expression) {
+    return expression.contains("sin") || expression.contains("cos") || expression.contains("tan");
+  }
+}
--- a/个人项目/src/start/Main.java
+++ b/个人项目/src/start/Main.java
@ -0,0 +1,61 @@
+package src.start;
+
+import java.util.List;
+import java.util.Scanner;
+import src.auth.Authenticator;
+import src.history.HistoryManager;
+import src.model.Level;
+import src.model.User;
+import src.question.AbstractQuestionGenerator;
+import src.util.Auth;
+import src.util.Question;
+
+/**
+ * 主程序类，负责用户交互和题目生成流程控制.
+ */
+public class Main {
+
+  /**
+   * 主方法，程序入口点.
+   * 负责用户认证、难度级别选择和题目生成流程控制.
+   *
+   * @param args 命令行参数
+   */
+  public static void main(String[] args) {
+    Authenticator authenticator = new Authenticator();
+    Scanner scanner = new Scanner(System.in);
+    while (true) {
+      User user = authenticator.login();
+      if (user == null) {
+        continue;
+      }
+      Level currentLevel = user.getInitialLevel();
+      while (true) {
+        System.out.println("当前选择为" + currentLevel.getName() + "出题");
+        System.out.print("准备生成" + currentLevel.getName()
+            + "数学题目，请输入生成题目数量（输入-1将退出当前用户，重新登录）：");
+        String inputText = scanner.nextLine().trim();
+        // 检查是否需要切换难度级别
+        Level newLevel = Auth.getLevel(inputText, currentLevel);
+        if (newLevel != null) {
+          currentLevel = newLevel;
+          continue;
+        }
+        // 处理题目生成
+        AbstractQuestionGenerator generator = Question.getGenerator(currentLevel);
+        Integer numQuestions = Question.getQuestionAmount(inputText);
+        if (numQuestions == -1) {
+          break; // 退出当前用户，重新登录
+        }
+        if (numQuestions == 0) {
+          continue; // 输入无效，重新输入
+        }
+        // 生成并保存题目
+        HistoryManager historyManager = new HistoryManager(user.getUsername());
+        List<String> questions = historyManager.getQuestion(numQuestions, generator);
+        historyManager.saveFile(questions, user);
+        System.out.println("题目生成完成，已保存到用户文件夹。");
+      }
+    }
+  }
+}
--- a/个人项目/src/util/Auth.java
+++ b/个人项目/src/util/Auth.java
@ -0,0 +1,39 @@
+package src.util;
+
+import src.model.Level;
+
+/**
+ * 工具类.
+ * 存放题目水平和相关的方法.
+ */
+
+public class Auth {
+  /**
+   * 处理题目水平切换请求.
+   * 解析用户输入的切换指令，返回对应的难度水平.
+   *
+   * @param inputText 用户输入的切换指令
+   * @param currentLevel 当前题目水平
+   * @return 新的题目水平，如果切换失败返回当前水平
+   */
+  public static Level getLevel(String inputText, Level currentLevel) {
+    if (inputText.startsWith("切换为")) {
+      String newLevelStr = inputText.substring("切换为".length()).trim();
+      Level newLevel = switch (newLevelStr) {
+        case "小学" -> Level.ELEMENTARY;
+        case "初中" -> Level.JUNIOR;
+        case "高中" -> Level.SENIOR;
+        default -> null;
+      };
+
+      if (newLevel != null) {
+        return newLevel;
+      } else {
+        System.out.println("请输入小学、初中和高中三个选项中的一个");
+        return currentLevel;
+      }
+    }
+    return null;
+  }
+
+}
--- a/个人项目/src/util/Question.java
+++ b/个人项目/src/util/Question.java
@ -0,0 +1,99 @@
+package src.util;
+
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import src.model.Level;
+import src.question.AbstractQuestionGenerator;
+import src.question.ElementaryGenerator;
+import src.question.JuniorGenerator;
+import src.question.SeniorGenerator;
+
+/**
+ * 工具类.
+ * 存放和题目相关的方法
+ */
+
+public class Question {
+
+  /**
+   * 从输入文本中获取问题数量.
+   *
+   * @param inputText 用户输入的文本
+   * @return 解析后的问题数量，0表示无效输入，-1表示特殊退出标志
+   */
+  public static Integer getQuestionAmount(String inputText) {
+    int numQuestions;
+    try {
+      numQuestions = Integer.parseInt(inputText);
+    } catch (NumberFormatException e) {
+      System.out.println("无效输入");
+      return 0;
+    }
+    if (numQuestions == -1) {
+      return -1;
+    }
+    if (numQuestions < 10 || numQuestions > 30) {
+      System.out.println("数量应在10-30");
+      return 0;
+    }
+    return numQuestions;
+  }
+  /**
+   * 根据难度级别获取对应的题目生成器.
+   *
+   * @param level 难度级别
+   * @return 对应级别的题目生成器实例
+   */
+
+  public static AbstractQuestionGenerator getGenerator(Level level) {
+    return switch (level) {
+      case ELEMENTARY -> new ElementaryGenerator();
+      case JUNIOR -> new JuniorGenerator();
+      case SENIOR -> new SeniorGenerator();
+    };
+  }
+  /**
+   * 删除最后表达式中的冗余括号.
+   *
+   * @param expression 数学表达式.
+   * @return 处理后的数学表达式.
+   */
+
+  public static String check(String expression) {
+    if (expression.charAt(0) == '(' && expression.charAt(expression.length() - 1) == ')') {
+      return expression.substring(1, expression.length() - 1);
+    }
+    return expression;
+  }
+  /**
+   * 计算表达式中操作数的数量.
+   *
+   * @param expression 数学表达式
+   * @return 操作数的数量
+   */
+
+  public static int countOperands(String expression) {
+    int count = 0;
+    Pattern pattern = Pattern.compile("\\d+");
+    Matcher matcher = pattern.matcher(expression);
+    while (matcher.find()) {
+      count++;
+    }
+    return count;
+  }
+
+  /**
+   * 生成问题.
+   *
+   * @return 格式化的数学问题字符串（包含等号）
+   */
+  public static String generateQuestion(AbstractQuestionGenerator generator) {
+    String expression;
+    do {
+      expression = generator.generateExpression();
+    } while (countOperands(expression) < 1 || countOperands(expression) > 5
+        || !generator.isValidForLevel(expression));
+    return check(expression) + " =";
+  }
+}
--- a/个人项目/张三1/2025-09-27-19-01-58.txt
+++ b/个人项目/张三1/2025-09-27-19-01-58.txt
@ -0,0 +1,40 @@
+1. (sqrt(sqrt(27 * 26)))^2 =
+
+2. (65 * ((58 * 28)^2 * 27)) =
+
+3. (((28)^2)^2 - (31)^2) =
+
+4. sqrt(sqrt(sqrt(28 * 97))) =
+
+5. sqrt(2) =
+
+6. sqrt(((68)^2)^2) =
+
+7. ((81)^2 / 29) =
+
+8. (21 - 69)^2 =
+
+9. (65 + (sqrt(58) * (sqrt(10) * 32))) =
+
+10. ((63 - 71)^2 * 4)^2 =
+
+11. sqrt(55 - 74) =
+
+12. (sqrt(sqrt(39)) + 84) =
+
+13. sqrt((85)^2 + 88) =
+
+14. ((sqrt(sqrt(37)))^2)^2 =
+
+15. (39)^2 =
+
+16. ((sqrt(82) - sqrt(35)) / (62 + 85)) =
+
+17. (sqrt(10) * 96) =
+
+18. sqrt((57)^2) =
+
+19. (((76 + 94)^2)^2)^2 =
+
+20. sqrt(91) =
+
--- a/个人项目/张三1/2025-09-27-19-02-43.txt
+++ b/个人项目/张三1/2025-09-27-19-02-43.txt
@ -0,0 +1,60 @@
+1. (sin(9) * (2 * cos(3 * 29))) =
+
+2. (46 - sin(13)) =
+
+3. (cos(26 - sin(39)) / tan(47)) =
+
+4. (((56 / (79 * 71)) * 44) * sin(56)) =
+
+5. cos(tan(82 - 9) + ((27 - 84) + tan(6))) =
+
+6. tan(tan((80 / 80) - (25 - 58))) =
+
+7. cos(tan(sin(99 + 36))) =
+
+8. sin(tan(48)) =
+
+9. sin(sin(68)) =
+
+10. cos(63) =
+
+11. tan(34) =
+
+12. (79 * (12 + cos(sin(66)))) =
+
+13. tan(cos(55 - 43) * cos(18)) =
+
+14. sin(23) =
+
+15. cos(43) =
+
+16. (cos(cos(45)) / 20) =
+
+17. (tan(72) * tan(91)) =
+
+18. cos(sin(tan(tan(17)))) =
+
+19. (((sin(5) * tan(27)) * tan(tan(84))) - 48) =
+
+20. (sin(56) * 7) =
+
+21. (cos(cos(11 / 77)) * (sin(cos(37)) + tan(sin(8)))) =
+
+22. tan(49) =
+
+23. (cos(cos(31)) / (67 / sin(73 / 82))) =
+
+24. (57 / ((53 - (44 / 32)) * tan(cos(56)))) =
+
+25. sin(4) =
+
+26. sin(cos(38)) =
+
+27. sin(39) =
+
+28. tan(cos(sin(53))) =
+
+29. tan(87) =
+
+30. sin(86 * sin(27)) =
+
--- a/个人项目/张三1/2025-09-27-19-03-08.txt
+++ b/个人项目/张三1/2025-09-27-19-03-08.txt
@ -0,0 +1,60 @@
+1. (88 / 49) =
+
+2. ((70 - 95) - (25 + 91)) =
+
+3. (69 * 98) =
+
+4. (95 - (73 - (13 + (42 / 59)))) =
+
+5. (((73 - 71) / 59) - 65) =
+
+6. ((77 + 41) * 57) =
+
+7. (64 / (12 - (55 * (14 / 94)))) =
+
+8. (((21 / 80) + 78) / 23) =
+
+9. (5 - 10) =
+
+10. (92 / (64 / 86)) =
+
+11. ((7 - 31) - 34) =
+
+12. ((95 * 96) - 23) =
+
+13. ((32 * 31) / 10) =
+
+14. (51 + (48 * 9)) =
+
+15. (86 + (56 + 6)) =
+
+16. (87 * (51 + ((82 * 79) - 54))) =
+
+17. (15 - 59) =
+
+18. (9 * (43 * 47)) =
+
+19. ((78 + 98) / (85 + 38)) =
+
+20. (59 + (61 / 44)) =
+
+21. (7 - (36 / (22 * 22))) =
+
+22. (62 / 11) =
+
+23. ((69 * (60 * 65)) - (37 + 83)) =
+
+24. (59 + 8) =
+
+25. ((54 / (51 - (39 - 90))) / 13) =
+
+26. (83 + 94) =
+
+27. (31 * 93) =
+
+28. (((52 + 22) + (40 + 50)) / 63) =
+
+29. ((78 - ((74 / 60) - 41)) / 11) =
+
+30. (35 / 8) =
+
--- a/个人项目/张三1/2025-09-27-19-29-03.txt
+++ b/个人项目/张三1/2025-09-27-19-29-03.txt
@ -0,0 +1,60 @@
+1. 56 - 45 =
+
+2. (65 - 9) * 30 =
+
+3. (80 / 88) * 61 =
+
+4. 41 * ((88 / 37) - 81) =
+
+5. 75 * (55 / (73 * (67 / 23))) =
+
+6. 63 - ((23 - 29) + 14) =
+
+7. 27 / (27 + 82) =
+
+8. 8 / 54 =
+
+9. 25 - (((41 - 51) - 13) / 91) =
+
+10. (67 / 53) - (2 - 62) =
+
+11. 82 + 8 =
+
+12. 74 / (21 - (77 - (95 + 3))) =
+
+13. 15 / (24 / 50) =
+
+14. 71 * (55 / (93 + (5 + 16))) =
+
+15. 27 * ((93 + (83 * 34)) - 22) =
+
+16. 85 + 95 =
+
+17. 72 / 47 =
+
+18. 74 + 1 =
+
+19. (10 * 81) - 22 =
+
+20. 84 / 89 =
+
+21. 51 * 43 =
+
+22. 67 / (34 * ((89 - 92) - 28)) =
+
+23. 8 + (((25 * 7) * 36) * 20) =
+
+24. 96 / 45 =
+
+25. 3 + (23 / 10) =
+
+26. (26 - (60 / 76)) / 92 =
+
+27. 37 * (61 - (42 * 2)) =
+
+28. 4 * 67 =
+
+29. 14 - 53 =
+
+30. 83 * (86 * 79) =
+
--- a/个人项目/张三1/2025-09-27-19-29-06.txt
+++ b/个人项目/张三1/2025-09-27-19-29-06.txt
@ -0,0 +1,60 @@
+1. 72 + 22 =
+
+2. (29 / 23) + 77 =
+
+3. 22 * 57 =
+
+4. 36 - 91 =
+
+5. 38 / (((17 / 10) - 46) * 14) =
+
+6. 77 * (39 * ((42 + 86) / 64)) =
+
+7. (80 * (31 - (39 * 49))) - 39 =
+
+8. 21 / 94 =
+
+9. 56 + 11 =
+
+10. ((80 + (15 - 81)) - 65) / 69 =
+
+11. 37 * 51 =
+
+12. 35 / 77 =
+
+13. (57 * 88) * 15 =
+
+14. ((79 * (97 / 80)) - 99) / 32 =
+
+15. (71 / (34 - 25)) - 77 =
+
+16. 40 * ((98 - (2 - 42)) + 15) =
+
+17. 79 + (22 * (10 * 71)) =
+
+18. (9 + 53) * 90 =
+
+19. 50 / 4 =
+
+20. 28 * (28 * 19) =
+
+21. 57 + 60 =
+
+22. ((100 * (20 + 23)) - 33) - 7 =
+
+23. (42 + 92) / 51 =
+
+24. 20 * ((72 - (19 / 79)) - 76) =
+
+25. ((51 + (30 * 44)) * 72) * 49 =
+
+26. 26 + 74 =
+
+27. (51 / 94) / 48 =
+
+28. 38 * ((32 * 69) - (70 * 28)) =
+
+29. 5 * (22 - (21 / 9)) =
+
+30. 87 * 60 =
+
--- a/Show More
+++ b/Show More