ADD file via upload

src/junior_generator.cpp

@@ -0,0 +1,76 @@
+#include "junior_generator.h"
+
+#include <sstream>
+#include <string>
+#include <vector>
+
+std::vector<std::string> JuniorGenerator::GenerateQuestions(int count,
+                                                          const std::string& username) {
+  current_user_ = username;
+  std::vector<std::string> questions;
+  questions.reserve(count);
+  
+  for (int i = 0; i < count; ++i) {
+    questions.push_back(GenerateSingleQuestion());
+  }
+  
+  return questions;
+}
+
+std::string JuniorGenerator::GenerateSingleQuestion() {
+    static const std::vector<char> kOperators = {'+', '-', '*', '/'};
+    const int operand_count = GetRandomNumber(kMinOperands, kMaxOperands);
+    
+    std::stringstream ss;
+    bool has_special_operator = false;
+    
+    // 第一个操作数可以是普通数字或特殊运算符
+    if (operand_count == 1 || GetRandomNumber(0, 1)) {
+        // 单操作数情况或第一个操作数是特殊运算符
+        if (GetRandomNumber(0, 1)) {
+            ss << "sqrt(" << GetRandomNumber(kMinNumber, kMaxNumber) << ")";
+        } else {
+            ss << GetRandomNumber(1, 10) << "^2";
+        }
+        has_special_operator = true;
+    } else {
+        // 第一个操作数是普通数字
+        ss << GetRandomNumber(kMinNumber, kMaxNumber);
+    }
+    
+    // 添加后续操作数
+    for (int i = 1; i < operand_count; ++i) {
+        const char op = GetRandomOperator(kOperators);
+        
+        // 随机决定是添加普通数字还是特殊运算符
+        if (!has_special_operator || GetRandomNumber(0, 1)) {
+            if (GetRandomNumber(0, 1)) {
+                ss << " " << op << " sqrt(" << GetRandomNumber(kMinNumber, kMaxNumber) << ")";
+            } else {
+                ss << " " << op << " " << GetRandomNumber(1, 10) << "^2";
+            }
+            has_special_operator = true;
+        } else {
+            ss << " " << op << " " << GetRandomNumber(kMinNumber, kMaxNumber);
+        }
+    }
+    
+    // 确保至少有一个特殊运算符
+    if (!has_special_operator) {
+        const char op = GetRandomOperator(kOperators);
+        if (GetRandomNumber(0, 1)) {
+            ss << " " << op << " sqrt(" << GetRandomNumber(kMinNumber, kMaxNumber) << ")";
+        } else {
+            ss << " " << op << " " << GetRandomNumber(1, 10) << "^2";
+        }
+    }
+    
+    ss << " = ?";
+    return ss.str();
+}
+
+bool JuniorGenerator::MeetsDifficultyRequirements(const std::string& question) {
+    // 使用ASCII字符而不是特殊Unicode字符
+    return question.find("^2") != std::string::npos || 
+           question.find("sqrt") != std::string::npos;
+}