diff --git a/src/QuizController.java b/src/QuizController.java
deleted file mode 100644
index 1670406..0000000
--- a/src/QuizController.java
+++ /dev/null
@@ -1,97 +0,0 @@
-import java.util.*;
-
-public class QuizController {
-    private QuestionGenerator questionGenerator;
-    private List<Question> currentQuiz;
-    private int currentQuestionIndex;
-    private int score;
-    private Map<Integer, Integer> userAnswers;
-
-    public static class Question {
-        private int id;
-        private String content;
-        private String[] options;
-        private int correctAnswer;
-        private String difficulty;
-
-        public Question(int id, String content, String[] options, int correctAnswer, String difficulty) {
-            this.id = id;
-            this.content = content;
-            this.options = options;
-            this.correctAnswer = correctAnswer;
-            this.difficulty = difficulty;
-        }
-
-        public int getId() { return id; }
-        public String getContent() { return content; }
-        public String[] getOptions() { return options; }
-        public int getCorrectAnswer() { return correctAnswer; }
-        public String getDifficulty() { return difficulty; }
-
-        public boolean checkAnswer(int userAnswer) {
-            return userAnswer == correctAnswer;
-        }
-    }
-
-    public QuizController() {
-        this.questionGenerator = new QuestionGenerator();
-        this.userAnswers = new HashMap<>();
-    }
-
-    public void startNewQuiz(String difficulty, int questionCount) {
-        this.currentQuiz = questionGenerator.generateQuestionSet(questionCount, difficulty);
-        this.currentQuestionIndex = 0;
-        this.score = 0;
-        this.userAnswers.clear();
-    }
-
-    public Question getCurrentQuestion() {
-        if (currentQuiz == null || currentQuestionIndex >= currentQuiz.size()) {
-            return null;
-        }
-        return currentQuiz.get(currentQuestionIndex);
-    }
-
-    public boolean submitAnswer(int answer) {
-        if (currentQuiz == null || currentQuestionIndex >= currentQuiz.size()) {
-            return false;
-        }
-
-        Question current = currentQuiz.get(currentQuestionIndex);
-        userAnswers.put(currentQuestionIndex, answer);
-
-        if (current.checkAnswer(answer)) {
-            score++;
-        }
-
-        return true;
-    }
-
-    public boolean nextQuestion() {
-        if (currentQuiz == null || currentQuestionIndex >= currentQuiz.size() - 1) {
-            return false;
-        }
-        currentQuestionIndex++;
-        return true;
-    }
-
-    public boolean hasNextQuestion() {
-        return currentQuiz != null && currentQuestionIndex < currentQuiz.size() - 1;
-    }
-
-    public int getCurrentQuestionNumber() {
-        return currentQuestionIndex + 1;
-    }
-
-    public int getTotalQuestions() {
-        return currentQuiz != null ? currentQuiz.size() : 0;
-    }
-
-    public int getScore() {
-        return score;
-    }
-
-    public double getPercentage() {
-        return currentQuiz != null ? (double) score / currentQuiz.size() * 100 : 0;
-    }
-}
\ No newline at end of file