3주차미션

README.md

@@ -1 +1,7 @@
 # java-lotto-precourse
+1. 로또 구입 금앱 입력받기 및 예외처리
+2. 로또 갯수 구하기
+3. 로또 발행하기 및 오름차순으로 정렬
+4. 당첨 번호 입력 받기
+5. 보너스 번호 입력 받기
+6. 당첨 내역 출력

src/main/java/lotto/Application.java

@@ -1,7 +1,9 @@
 package lotto;
 
+import lotto.controller.LottoController;
+
 public class Application {
     public static void main(String[] args) {
-        // TODO: 프로그램 구현
+        new LottoController().run();
     }
 }

src/main/java/lotto/controller/LottoController.java

@@ -0,0 +1,16 @@
+package lotto.controller;
+
+import lotto.service.LottoService;
+import lotto.view.InputView;
+
+public class LottoController {
+    public void run() {
+        int money = InputView.readMoney();
+        int count = money / 1000;
+
+        LottoService lottoService = new LottoService();
+        lottoService.buyLottos(count);
+        lottoService.inputWinningNumbers();
+        lottoService.checkResults();
+    }
+}

src/main/java/lotto/model/Lotto.java

@@ -0,0 +1,18 @@
+package lotto.model;
+
+import camp.nextstep.edu.missionutils.Randoms;
+import java.util.Collections;
+import java.util.List;
+
+public class Lotto {
+    private final List<Integer> numbers;
+
+    public Lotto() {
+        this.numbers = Randoms.pickUniqueNumbersInRange(1, 45, 6);
+        Collections.sort(numbers); // 오름차순 정렬
+    }
+
+    public List<Integer> getNumbers() {
+        return numbers;
+    }
+}

src/main/java/lotto/service/LottoService.java

@@ -0,0 +1,54 @@
+package lotto.service;
+
+import lotto.model.Lotto;
+import lotto.view.InputView;
+import lotto.view.OutputView;
+import java.util.*;
+
+public class LottoService {
+    private List<Lotto> userLottos; // 사용자가 구매한 로또 리스트
+    private List<Integer> winningNumbers; // 당첨 번호
+    private int bonusNumber; // 보너스 번호
+
+    public void buyLottos(int count) {
+        userLottos = new ArrayList<>();
+        for (int i = 0; i < count; i++) {
+            userLottos.add(new Lotto());
+        }
+        OutputView.printLottos(userLottos);
+    }
+
+    public void inputWinningNumbers() {
+        winningNumbers = InputView.getWinningNumbers();
+        bonusNumber = InputView.getBonusNumber(winningNumbers);
+    }
+
+    public void checkResults() {
+        Map<Integer, Integer> results = new HashMap<>();
+        results.put(3, 0);
+        results.put(4, 0);
+        results.put(5, 0);
+        results.put(6, 0);
+        results.put(7, 0); // 5개 + 보너스
+
+        for (Lotto lotto : userLottos) {
+            int matchCount = countMatches(lotto.getNumbers());
+            boolean hasBonus = lotto.getNumbers().contains(bonusNumber);
+
+            if (matchCount == 5 && hasBonus) results.put(7, results.get(7) + 1);
+            else if (results.containsKey(matchCount)) results.put(matchCount, results.get(matchCount) + 1);
+        }
+
+        OutputView.printResults(results);
+    }
+
+    private int countMatches(List<Integer> userNumbers) {
+        int count = 0;
+        for (int num : userNumbers) {
+            if (winningNumbers.contains(num)) {
+                count++;
+            }
+        }
+        return count;
+    }
+}

src/main/java/lotto/view/InputView.java

@@ -0,0 +1,51 @@
+package lotto.view;
+
+import static camp.nextstep.edu.missionutils.Console.readLine;
+import java.util.*;
+
+public class InputView {
+    public static int readMoney() {
+        System.out.println("구입금액을 입력해 주세요.");
+        return validateMoney(readLine());
+    }
+
+    public static List<Integer> getWinningNumbers() {
+        System.out.println("당첨 번호를 입력해 주세요.");
+        return validateNumbers(readLine().split(","));
+    }
+
+    public static int getBonusNumber(List<Integer> winningNumbers) {
+        System.out.println("보너스 번호를 입력해 주세요.");
+        while (true) {
+            try {
+                int bonus = Integer.parseInt(readLine());
+                if (winningNumbers.contains(bonus)) throw new IllegalArgumentException("보너스 번호는 당첨 번호와 중복될 수 없습니다.");
+                return bonus;
+            } catch (Exception e) {
+                System.out.println("[ERROR] " + e.getMessage());
+            }
+        }
+    }
+
+    private static int validateMoney(String input) {
+        if (!input.matches("\\d+") || Integer.parseInt(input) % 1000 != 0) {
+            throw new IllegalArgumentException("구입 금액은 1,000원 단위여야 합니다.");
+        }
+        return Integer.parseInt(input);
+    }
+
+    private static List<Integer> validateNumbers(String[] input) {
+        if (input.length != 6) throw new IllegalArgumentException("당첨 번호는 6개여야 합니다.");
+
+        List<Integer> numbers = new ArrayList<>();
+        for (String num : input) {
+            int number = Integer.parseInt(num.trim());
+            if (number < 1 || number > 45 || numbers.contains(number)) {
+                throw new IllegalArgumentException("유효하지 않은 로또 번호입니다.");
+            }
+            numbers.add(number);
+        }
+        return numbers;
+    }
+}
+

src/main/java/lotto/view/OutputView.java

@@ -0,0 +1,25 @@
+package lotto.view;
+
+import lotto.model.Lotto;
+import java.util.List;
+import java.util.Map;
+
+public class OutputView {
+    public static void printLottos(List<Lotto> lottos) {
+        System.out.println(lottos.size() + "개를 구매했습니다.");
+        for (Lotto lotto : lottos) {
+            System.out.println(lotto.getNumbers());
+        }
+    }
+
+    public static void printResults(Map<Integer, Integer> results) {
+        System.out.println("\n당첨 통계");
+        System.out.println("---");
+        System.out.println("3개 일치 (5,000원) - " + results.get(3) + "개");
+        System.out.println("4개 일치 (50,000원) - " + results.get(4) + "개");
+        System.out.println("5개 일치 (1,500,000원) - " + results.get(5) + "개");
+        System.out.println("5개 + 보너스 볼 일치 (30,000,000원) - " + results.get(7) + "개");
+        System.out.println("6개 일치 (2,000,000,000원) - " + results.get(6) + "개");
+    }
+}
+