[로또 게임] 박지현 2차 과제 제출합니다.

src/main/java/lotto/Application.java

@@ -1,7 +1,10 @@
 package lotto;
 
+import camp.nextstep.edu.missionutils.Console;
+
 public class Application {
     public static void main(String[] args) {
-        // TODO: 프로그램 구현
+        RunApplication runApplication = new RunApplication();
+        runApplication.run();
     }
 }

src/main/java/lotto/Exception.java

@@ -0,0 +1,30 @@
+package lotto;
+
+public class Exception {
+    void exceptionOfLength(String[] numbers){
+        if(numbers.length != 6) {
+            throw new IllegalArgumentException("[ERROR] 로또 번호는 6개여야 합니다.");
+        }
+    }
+
+    void exceptionOfNumber(String[] numbers) {
+        for (String n : numbers) {
+            int number = Integer.parseInt(n);
+            if (number < 1 || number > 45) {
+                throw new IllegalArgumentException("[ERROR] 로또 번호는 1부터 45 사이의 숫자여야 합니다.");
+            }
+        }
+    }
+
+    void exceptionOfBonus(int bonusNumber){
+        if(bonusNumber < 1 || bonusNumber > 45) {
+            throw new IllegalArgumentException("[ERROR] 로또 번호는 1부터 45 사이의 숫자여야 합니다.");
+        }
+    }
+
+    void ExceptionOfPrice(int lottoPrice) {
+        if (lottoPrice % 1000 != 0) {
+            throw new IllegalArgumentException("[ERROR] 구입 금액은 1,000원 단위여야 합니다.");
+        }
+    }
+}

src/main/java/lotto/Insert.java

@@ -0,0 +1,59 @@
+package lotto;
+
+import camp.nextstep.edu.missionutils.Console;
+
+public class Insert {
+    String[] numbers = new String[6];
+    int bonusNumber;
+
+    //구입 금액 입력
+    void insertPrice(int lottoPrice) {
+        Exception exceptionOfPrice = new Exception();
+        exceptionOfPrice.ExceptionOfPrice(lottoPrice);
+        System.out.println(lottoPrice / 1000 + "개를 구매했습니다.");
+    }
+
+    String[] insertNumber() {
+        while(true) {
+            try {
+                System.out.println("당첨 번호를 입력해 주세요.");
+                String luckyNumber = Console.readLine();
+                numbers = luckyNumber.split(",");
+
+                //1-45 사이 숫자 아닌 경우 예외처리
+                Exception exceptionOfNumber = new Exception();
+                exceptionOfNumber.exceptionOfNumber(numbers);
+                //6개가 아닌 경우 예외처리
+                Exception exceptionOfLength = new Exception();
+                exceptionOfLength.exceptionOfLength(numbers);
+
+                break;
+            } catch (IllegalArgumentException e) {
+                System.out.println(e.getMessage());
+            }
+        }
+        return numbers;
+    }
+
+    void insertBonus() {
+        while (true) {
+            try {
+                System.out.println("보너스 번호를 입력해 주세요.");
+                String bonus = Console.readLine();
+                bonusNumber = Integer.parseInt(bonus);
+
+                Exception exceptionOfBonus = new Exception();
+                exceptionOfBonus.exceptionOfBonus(bonusNumber);
+
+                break;
+
+            } catch (IllegalArgumentException e) {
+                System.out.println(e.getMessage());
+            }
+        }
+    }
+
+    int getBonusNumber(){
+        return bonusNumber;
+    }
+}

src/main/java/lotto/Lotto.java

@@ -3,18 +3,16 @@
 import java.util.List;
 
 public class Lotto {
-    private final List<Integer> numbers;
+    private final List<Integer> lottoNumbers;
 
-    public Lotto(List<Integer> numbers) {
-        validate(numbers);
-        this.numbers = numbers;
+    public Lotto(List<Integer> lottoNumbers) {
+        validate(lottoNumbers);
+        this.lottoNumbers = lottoNumbers;
     }
 
-    private void validate(List<Integer> numbers) {
-        if (numbers.size() != 6) {
+    private void validate(List<Integer> lottoNumbers) {
+        if (lottoNumbers.size() != 6) {
             throw new IllegalArgumentException();
         }
     }
-
-    // TODO: 추가 기능 구현
-}
+}

src/main/java/lotto/Print.java

@@ -0,0 +1,20 @@
+package lotto;
+
+public class Print {
+    void printStatistics(int[] winningCount) {
+        for (WinningEnum winning : WinningEnum.values()) {
+            System.out.println(winning.getMessage() + winningCount[winning.getCount()] + "개");
+        }
+    }
+
+    //수익률 출력
+    void printEarningRate(int[] winningCount, int lottoPrice) {
+        int totalPrice = 0;
+        for (WinningEnum winning : WinningEnum.values()) {
+            totalPrice += (winning.getPrice() * winningCount[winning.getCount()]);
+        }
+        double e = (double) totalPrice / lottoPrice;
+        double earningRate = (Math.round(e*1000)/10.0);
+        System.out.println("총 수익률은 " + earningRate + "%입니다.");
+    }
+}

src/main/java/lotto/RandomLotto.java

@@ -0,0 +1,45 @@
+package lotto;
+
+import camp.nextstep.edu.missionutils.Randoms;
+
+import java.util.*;
+
+public class RandomLotto {
+    List<List<Integer>> allLottoNumbers = new ArrayList<>(); //로또 리스트들을 저장하는 리스트
+    String[] numbers = new String[6];
+    int[] winningCount = new int[8];
+    Insert insert = new Insert();
+
+    void setBonus() {
+        insert.insertBonus();
+    }
+
+    // 구입 금액만큼 로또 번호를 랜덤으로 출력
+    void randomLotto(int lottoPrice) {
+        for (int i = 0; i < lottoPrice / 1000; i++) {
+            List<Integer> lottoNumbers = Randoms.pickUniqueNumbersInRange(1, 45, 6);
+            Lotto lotto = new Lotto(lottoNumbers); //list 가 유효한지 검증
+            Collections.sort(lottoNumbers); //오름차순 정렬
+            allLottoNumbers.add(lottoNumbers);
+            System.out.println(lottoNumbers);
+        }
+    }
+
+    void insertNumber() {
+        numbers = insert.insertNumber();
+    }
+
+    //당첨 통계 계산
+    void produceStatistics() {
+        int bonusNumber = insert.getBonusNumber();
+        StatisticsCalculator statisticsCalculator = new StatisticsCalculator();
+        statisticsCalculator.produceStatistics(allLottoNumbers, numbers, winningCount, bonusNumber);
+    }
+
+    //당첨 내역과 수익률
+    void printAll(int lottoPrice) {
+        Print print = new Print();
+        print.printStatistics(winningCount);
+        print.printEarningRate(winningCount, lottoPrice);
+    }
+}

src/main/java/lotto/RunApplication.java

@@ -0,0 +1,36 @@
+package lotto;
+
+import camp.nextstep.edu.missionutils.Console;
+public class RunApplication {
+    void run() {
+        while(true) {
+            try {
+                System.out.println("구입금액을 입력해 주세요.");
+                String price = Console.readLine();
+                int lottoPrice = Integer.parseInt(price);
+
+                //로또 구입 금액 입력
+                Insert insert = new Insert();
+                insert.insertPrice(lottoPrice);
+
+                //구입 금액만큼 랜덤 로또 번호 출력
+                RandomLotto randomLotto = new RandomLotto();
+                randomLotto.randomLotto(lottoPrice);
+
+                //당첨 번호, 보너스 번호 입력
+                randomLotto.insertNumber();
+                randomLotto.setBonus();
+
+                //당첨 통계
+                randomLotto.produceStatistics();
+                //당첨 내역과 수익률 출력
+                randomLotto.printAll(lottoPrice);
+
+                break;
+
+            } catch (IllegalArgumentException e) {
+                System.out.println(e.getMessage());
+            }
+        }
+    }
+}

src/main/java/lotto/StatisticsCalculator.java

@@ -0,0 +1,25 @@
+package lotto;
+
+import java.util.List;
+
+public class StatisticsCalculator {
+    void produceStatistics(List<List<Integer>> allLottoNumbers, String[] numbers, int[] winningCount, int bonusNumber) {
+        //int bonusNumber = insert.getBonusNumber();
+        System.out.println("당첨 통계");
+        System.out.println("---");
+
+        for (List<Integer> lottoNumbers : allLottoNumbers) {
+            int count = 0;
+            for (String n : numbers) {
+                if (lottoNumbers.contains(Integer.parseInt(n))) {
+                    count++;
+                }
+            }
+            if (count == 5 && lottoNumbers.contains(bonusNumber)) {
+                winningCount[7]++;
+                return;
+            }
+            winningCount[count]++;
+        }
+    }
+}

src/main/java/lotto/WinningEnum.java

@@ -0,0 +1,31 @@
+package lotto;
+
+public enum WinningEnum {
+    three(3, 5000, "3개 일치 (5,000원) - "),
+    four(4, 50000, "4개 일치 (50,000원) - "),
+    five(5, 1500000, "5개 일치 (1,500,000원) - "),
+    bonus(7, 30000000, "5개 일치, 보너스 볼 일치 (30,000,000원) - "),
+    six(6, 2000000000, "6개 일치 (2,000,000,000원) - ");
+
+    private final int count;
+    private final int price;
+    private final String message;
+
+    WinningEnum(int count, int price, String message) {
+        this.count = count;
+        this.price = price;
+        this.message = message;
+    }
+
+    public int getCount() {
+        return count;
+    }
+
+    public int getPrice() {
+        return price;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+}