[로또 미션] 길현우 미션제출합니다.

src/main/java/Lotto.java

@@ -0,0 +1,140 @@
+import java.io.PrintStream;
+import java.nio.charset.StandardCharsets;
+import java.util.*;
+
+public class Lotto {
+
+    private final Set<Integer> lottoNumbers = new HashSet<>();
+    private List<Integer> sortedLotto = new ArrayList<>();
+    private final List<List<Integer>> lottoNum = new ArrayList<>();
+
+    private Integer[] rank = new Integer[8]; // 당첨 개수 저장
+    private final Integer[] winningPrize = {0, 0, 0, 5000, 50000, 1500000, 30000000, 2000000000};
+    private int bonusBall = 0;
+
+    public Lotto() {
+        setLottoNumbers();
+        SetToList();
+        Arrays.fill(rank, 0); // rank 배열을 0으로 초기화
+    }
+
+    public void setLottoNumbers() {
+        Random random = new Random();
+        while (lottoNumbers.size() < 6) {
+            int number = random.nextInt(45) + 1;
+            lottoNumbers.add(number);
+        }
+    }
+
+    public List<Integer> SetToList() {
+        sortedLotto = new ArrayList<>(lottoNumbers);
+        Collections.sort(sortedLotto);
+        return sortedLotto;
+    }
+
+    public void printLotto(int inputPrice) {
+        int price = 1000;
+        int loop = inputPrice / price;
+        for (int i = 0; i < loop; i++) {
+            Lotto generateLotto = new Lotto();
+            System.out.println(generateLotto.sortedLotto);
+            lottoNum.add(generateLotto.sortedLotto);
+        }
+    }
+
+    public List<Integer> StringToInt(String[] StringlastNum) {
+        List<Integer> WinningNum = new ArrayList<>();
+        for (String value : StringlastNum) {
+            int lastNumber = Integer.parseInt(value.trim()); // 공백 제거 후 변환
+            WinningNum.add(lastNumber);
+        }
+        return WinningNum;
+    }
+
+    public int PureStringToInt(StringBuilder str) {
+        return Integer.parseInt(str.toString().trim()); // 공백 제거 후 변환
+    }
+
+    public void checkingWinningnumbers(List<Integer> lastWinningNum) {
+        for (List<Integer> singleLotto : lottoNum) {
+            int matchCount = countMatchingnumbers(singleLotto, lastWinningNum);
+            boolean hasBonus = isBonusBall(singleLotto);
+
+            if (matchCount == 5 && hasBonus) {
+                rank[6]++; // 5개 + 보너스 볼 = 2등
+            } else if (matchCount <= 6) {
+                rank[matchCount]++; // 일반 당첨 처리
+            }
+        }
+
+        for (int i = 3; i < 8; i++) {
+            if (i == 6) {
+                System.out.println("5개 일치, 보너스 볼 일치 (" + winningPrize[i] + "원)- " + rank[i] + "개");
+            } else {
+                System.out.println(i + "개 일치 (" + winningPrize[i] + "원)- " + rank[i] + "개");
+            }
+        }
+    }
+
+    public int countMatchingnumbers(List<Integer> singleLotto, List<Integer> lastWinningNum) {
+        int count = 0;
+        for (int value : lastWinningNum) {
+            if (value != bonusBall) { // 보너스 볼을 제외하고 비교
+                count += isMatching(value, singleLotto);
+            }
+        }
+        return count;
+    }
+
+    public int isMatching(int value, List<Integer> singleLotto) {
+        if (singleLotto.contains(value)) {
+            return 1;
+        }
+        return 0;
+    }
+
+    public double getProfit(int money) {
+        if (money == 0) return 0; // 0으로 나누기 방지
+
+        double profit = 0;
+        double prize = 0;
+        for (int i = 3; i < 8; i++) {
+            if (rank[i] > 0) {
+                prize += winningPrize[i] * rank[i];
+            }
+        }
+        profit = prize / money;
+        return profit;
+    }
+
+    public void getbonusBall(StringBuilder bonus) {
+        bonusBall = PureStringToInt(bonus);
+    }
+
+    public boolean isBonusBall(List<Integer> singleLotto) {
+        return singleLotto.contains(bonusBall); // 보너스 볼이 포함되었는지만 체크
+    }
+
+    public static void main(String[] args) {
+        System.setOut(new PrintStream(System.out, true, StandardCharsets.UTF_8));
+
+        Lotto lotto = new Lotto();
+        Scanner scanner = new Scanner(System.in);
+        System.out.println("구입금액을 입력해주세요:");
+
+        Integer money = scanner.nextInt();
+        lotto.printLotto(money);
+
+        scanner.nextLine();
+
+        System.out.println("지난 주 당첨 번호를 입력해 주세요.");
+        StringBuilder inputWinningNum = new StringBuilder(scanner.nextLine());
+        String[] WinningNum = inputWinningNum.toString().split(",");
+        System.out.println("보너스 볼을 입력해 주세요.");
+        StringBuilder bonusBall = new StringBuilder(scanner.nextLine());
+        lotto.getbonusBall(bonusBall);
+        List<Integer> intWinningNum = lotto.StringToInt(WinningNum);
+        lotto.checkingWinningnumbers(intWinningNum);
+        System.out.println("총 수익률은 " + lotto.getProfit(money) + "입니다.");
+    }
+}