diff --git a/exams/李四1/2025-09-28-23-39-02.txt b/exams/李四1/2025-09-28-23-39-02.txt new file mode 100644 index 0000000..84801c2 --- /dev/null +++ b/exams/李四1/2025-09-28-23-39-02.txt @@ -0,0 +1,39 @@ +1. (9)² = + +2. √99 = + +3. (5)² = + +4. √86 + (39) + 56 / 86 = + +5. √44 + ((21) * 49) / 19 / 15 / 6 = + +6. (4)² = + +7. (7)² = + +8. (5)² + (36 - 53 + 24) = + +9. √27 = + +10. (2)² = + +11. (6)² + ((30) / 29 / 87) * 6 + 49 = + +12. √54 = + +13. √73 = + +14. (5)² + 14 * 89 / 65 / 6 - 16 = + +15. √55 = + +16. √74 + (((16) - 29) * 26 - 34) = + +17. √11 = + +18. √41 + ((71) / 57 - 16 * 8) + 90 = + +19. (6)² = + +20. √63 = diff --git a/exams/王五1/2025-09-28-23-36-24.txt b/exams/王五1/2025-09-28-23-36-24.txt new file mode 100644 index 0000000..b4b5c2f --- /dev/null +++ b/exams/王五1/2025-09-28-23-36-24.txt @@ -0,0 +1,39 @@ +1. sin(67°) + ((91) - 77) + 2 = + +2. cos(40°) + (88) / 44 + 69 + 17 + 93 = + +3. sin(20°) + 84 + 3 = + +4. tan(16°) + 31 * 7 + 87 + 64 = + +5. tan(18°) + (((24 - 34) - 27 * 58) * 67) = + +6. cos(26°) + ((77 - 15 * 79) / 14 - 19) = + +7. sin(24°) + 71 = + +8. tan(14°) + 28 + 83 = + +9. sin(7°) + (84) / 54 / 48 / 64 + 39 = + +10. cos(21°) + 66 = + +11. sin(33°) + 53 = + +12. cos(37°) + 93 + 83 / 50 / 6 = + +13. sin(38°) + (86 / 53 / 19 * 31) = + +14. sin(48°) + 8 / 18 = + +15. cos(83°) + 53 + 99 = + +16. cos(73°) + 28 / 36 = + +17. cos(10°) + 13 - 13 = + +18. cos(83°) + 2 = + +19. tan(35°) + (83) * 31 / 11 - 93 = + +20. tan(26°) + (((53 + 63) + 74) + 22 / 58) = diff --git a/src/services/MathQuestion.java b/src/services/MathQuestion.java index 4324b32..285180e 100644 --- a/src/services/MathQuestion.java +++ b/src/services/MathQuestion.java @@ -8,27 +8,28 @@ public class MathQuestion implements QuestionInterface { private String questionText; private DifficultyLevel difficulty; private Random random; + private boolean isValid; public MathQuestion(DifficultyLevel difficulty) { this.difficulty = difficulty; this.random = new Random(); this.questionText = generateQuestion(); + this.isValid = validateQuestion(); } @Override public String generateQuestion() { - int operandCount = random.nextInt(5) + 1; StringBuilder question = new StringBuilder(); switch (difficulty) { case PRIMARY: - question.append(generatePrimaryQuestion(operandCount)); + question.append(generatePrimaryQuestion()); break; case JUNIOR: - question.append(generateJuniorQuestion(operandCount)); + question.append(generateJuniorQuestion()); break; case SENIOR: - question.append(generateSeniorQuestion(operandCount)); + question.append(generateSeniorQuestion()); break; } @@ -38,7 +39,33 @@ public class MathQuestion implements QuestionInterface { @Override public boolean isValid() { - return questionText != null && !questionText.trim().isEmpty(); + return isValid; + } + + private boolean validateQuestion() { + if (questionText == null || questionText.trim().isEmpty()) { + return false; + } + + // 小学题目必须至少有2个操作数 + if (difficulty == DifficultyLevel.PRIMARY) { + String expr = questionText.replace(" = ", ""); + // 统计操作符数量来判断操作数数量 + int operatorCount = countOperators(expr); + return operatorCount >= 1; // 1个操作符表示2个操作数 + } + + return true; + } + + private int countOperators(String expression) { + int count = 0; + for (char c : expression.toCharArray()) { + if (c == '+' || c == '-' || c == '*' || c == '/') { + count++; + } + } + return count; } @Override @@ -51,7 +78,9 @@ public class MathQuestion implements QuestionInterface { return difficulty; } - private String generatePrimaryQuestion(int operandCount) { + private String generatePrimaryQuestion() { + // 小学题目：确保至少有2个操作数（2-5个） + int operandCount = random.nextInt(4) + 2; // 2-5个操作数 String[] operators = {"+", "-", "*", "/"}; StringBuilder question = new StringBuilder(); @@ -61,6 +90,7 @@ public class MathQuestion implements QuestionInterface { } question.append(random.nextInt(100) + 1); + // 随机添加括号（小学难度） if (operandCount > 2 && random.nextDouble() < 0.3) { question.insert(0, "(").append(")"); } @@ -68,19 +98,51 @@ public class MathQuestion implements QuestionInterface { return question.toString(); } - private String generateJuniorQuestion(int operandCount) { - String question = generatePrimaryQuestion(operandCount); - if (random.nextBoolean()) { - return "√" + (random.nextInt(100) + 1) + " + " + question; - } else { - return "(" + (random.nextInt(10) + 1) + ")² + " + question; + private String generateJuniorQuestion() { + // 初中题目：可以有1个操作数（涉及平方、开根号） + int choice = random.nextInt(3); + switch (choice) { + case 0: + // 单个操作数：开根号 + return "√" + (random.nextInt(100) + 1); + case 1: + // 单个操作数：平方 + return "(" + (random.nextInt(10) + 1) + ")²"; + case 2: + // 多个操作数：基础运算 + 平方/开根号 + String baseQuestion = generatePrimaryQuestion(); + if (random.nextBoolean()) { + return "√" + (random.nextInt(100) + 1) + " + " + baseQuestion; + } else { + return "(" + (random.nextInt(10) + 1) + ")² + " + baseQuestion; + } + default: + return generatePrimaryQuestion(); } } - private String generateSeniorQuestion(int operandCount) { - String question = generatePrimaryQuestion(operandCount); + private String generateSeniorQuestion() { + // 高中题目：可以有1个操作数（涉及三角函数） + int choice = random.nextInt(3); String[] trigFunctions = {"sin", "cos", "tan"}; - return trigFunctions[random.nextInt(trigFunctions.length)] + - "(" + (random.nextInt(90) + 1) + "°) + " + question; + + switch (choice) { + case 0: + // 单个操作数：三角函数 + return trigFunctions[random.nextInt(trigFunctions.length)] + + "(" + (random.nextInt(90) + 1) + "°)"; + case 1: + // 三角函数 + 基础运算 + String baseQuestion = generatePrimaryQuestion(); + return trigFunctions[random.nextInt(trigFunctions.length)] + + "(" + (random.nextInt(90) + 1) + "°) + " + baseQuestion; + case 2: + // 复杂组合：三角函数 + 平方/开根号 + 基础运算 + String complexBase = generateJuniorQuestion(); + return trigFunctions[random.nextInt(trigFunctions.length)] + + "(" + (random.nextInt(90) + 1) + "°) + " + complexBase; + default: + return generatePrimaryQuestion(); + } } } \ No newline at end of file diff --git a/src/services/QuestionGenerator.java b/src/services/QuestionGenerator.java index 08ebb15..191eff5 100644 --- a/src/services/QuestionGenerator.java +++ b/src/services/QuestionGenerator.java @@ -31,7 +31,8 @@ public class QuestionGenerator { return null; } } while (existingQuestions.contains(question.getQuestionText()) || - newQuestions.contains(question.getQuestionText())); + newQuestions.contains(question.getQuestionText()) || + !question.isValid()); newQuestions.add(question.getQuestionText()); questions[i] = (i + 1) + ". " + question.getQuestionText();