[스프링 월요일 B팀] (강지윤) 미션 제출합니다.

src/main/java/lotto/Application.java

@@ -1,7 +1,28 @@
 package lotto;
 
+import java.util.ArrayList;
+import java.util.List;
+
 public class Application {
     public static void main(String[] args) {
-        // TODO: 프로그램 구현
+
+        int count = Output.userBuyOut();
+
+        ArrayList<List<Integer>> numberU = new ArrayList<>();
+        numberU = lotto.Lotto.LottoNumber(count);
+
+        Output.usernumber(numberU, count);
+
+        List<Integer> luckyNumber = new ArrayList<>();
+        luckyNumber = Output.luckyNumberOut();
+
+        int plusNumber = Output.plusNumberOut(luckyNumber);
+
+        int[] win = lotto.Lotto.LottoWinning(numberU, luckyNumber, plusNumber, count);
+        Output.luckyResult(win, lotto.Lotto.LottoReturnRate(win, count));
+
+
     }
 }
+
+

src/main/java/lotto/Input.java

@@ -0,0 +1,61 @@
+package lotto;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Scanner;
+
+
+
+public class Input {
+
+    public static int userBuyIn() {
+        Scanner sc1 = new Scanner(System.in);
+        int money = sc1.nextInt();
+
+        if(money % 1000 != 0) {
+            UserHelp.errorUserBuy();
+        }
+
+        return money / 1000;
+    }
+
+    public static List<Integer> luckyNumberIn() {
+
+        Scanner sc = new Scanner(System.in);
+        String str = sc.next();
+
+        String[] strArr = str.split(",");
+        List<String> intList = new ArrayList<>(Arrays.asList(strArr));
+
+        List<Integer> luckyNumber = new ArrayList<>();
+        for (String s : intList) {
+            luckyNumber.add(Integer.parseInt(s));
+        }
+
+        if(luckyNumber.size() != 6) {
+            UserHelp.errorLuckyNumber_size();
+        }
+        for (int i = 0; i < 6; ++i) {
+            if(luckyNumber.get(i) > 45 || luckyNumber.get(i) < 0) {
+                UserHelp.errorLuckyNumber_number();
+            }
+        }
+
+        return luckyNumber;
+
+    }
+
+    public static int plusNumberIn(List<Integer> luckyNumber) {
+        Scanner sc = new Scanner(System.in);
+        int plusNumber = sc.nextInt();
+        boolean plus = luckyNumber.contains(plusNumber);
+        if(plus) {
+            UserHelp.errorPlusNumber();
+        }
+
+        return plusNumber;
+    }
+
+
+}

src/main/java/lotto/Lotto.java

@@ -1,12 +1,17 @@
 package lotto;
 
+import camp.nextstep.edu.missionutils.Randoms;
+
+import java.util.ArrayList;
+import java.util.Comparator;
 import java.util.List;
 
+
 public class Lotto {
     private final List<Integer> numbers;
 
     public Lotto(List<Integer> numbers) {
-        validate(numbers);
+        validate(numbers);          //String 검증용
         this.numbers = numbers;
     }
 
@@ -16,5 +21,51 @@ private void validate(List<Integer> numbers) {
         }
     }
 
-    // TODO: 추가 기능 구현
+    public static ArrayList<List<Integer>> LottoNumber(int count) {
+
+        int i;
+        ArrayList<List<Integer>> numberU = new ArrayList<>();
+
+        for (i = 0;i < count; ++i) {
+            List<Integer> numbers = Randoms.pickUniqueNumbersInRange(1, 45, 6);
+            numbers.sort(Comparator.naturalOrder());
+            numberU.add(i, numbers);
+        }
+
+        return numberU;
+    }
+
+    public static int[] LottoWinning(ArrayList<List<Integer>> numberU, List<Integer> luckyNumber, int plusNumber, int count) {
+        int[] win = {0, 0, 0, 0, 0};
+        int i;
+
+        for(i = 0; i < count; ++i) {
+            int same = 0, p = 0;
+            boolean plus = numberU.get(i).contains(plusNumber);
+            if(plus) p = 1;
+
+            (numberU.get(i)).retainAll(luckyNumber);
+            same = (numberU.get(i)).size();
+
+            if(same == 3) win[0] += 1;
+            if(same == 4) win[1] += 1;
+            if(same == 5) win[2] += 1;
+            if(same == 5 && p == 1) win[3] += 1;
+            if(same == 6) win[4] += 1;
+        }
+
+        return win;
+    }
+
+    public static double LottoReturnRate (int[] win, int count) {
+        int sum;
+        double avg;
+
+        sum = win[0] * 5000 + win[1] * 50000 + win[2] * 1500000 + win[3] * 30000000 + win[4] * 2000000000;
+        avg = sum / ((double)(count * 1000)) * 100;
+
+        avg = Math.round(avg * 10);
+
+        return avg / 10;
+    }
 }

src/main/java/lotto/Output.java

@@ -0,0 +1,58 @@
+package lotto;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Output {
+
+    public static int userBuyOut() {
+        System.out.println("구입금액을 입력해 주세요.");
+
+        int count = Input.userBuyIn();
+        if(count != -1) {
+            System.out.println(" ");
+            System.out.println(count +"개를 구매했습니다.");
+        }
+
+        return count;
+    }
+
+    public static void usernumber(ArrayList<List<Integer>> numbers, int count) {
+        int i;
+        for(i = 0; i < count; ++i) {
+            System.out.println(numbers.get(i));
+        }
+
+    }
+
+    public static List<Integer> luckyNumberOut() {
+        System.out.println(" ");
+        System.out.println("당첨 번호를 입력해 주세요.");
+
+        List<Integer> luckyNumber = new ArrayList<>();
+        luckyNumber = Input.luckyNumberIn();
+
+        return luckyNumber;
+    }
+
+    public static int plusNumberOut(List<Integer> luckyNumber) {
+        System.out.println(" ");
+        System.out.println("보너스 번호를 입력해 주세요.");
+
+        return Input.plusNumberIn(luckyNumber);
+    }
+
+    public static void luckyResult(int[] win, double avg) {
+        System.out.println(" ");
+        System.out.println("당첨 통계");
+        System.out.println("---");
+        System.out.println("3개 일치 (5,000원) - "+ win[0] +"개");
+        System.out.println("4개 일치 (50,000원) - "+ win[1] +"개");
+        System.out.println("5개 일치 (1,500,000원) - "+ win[2] +"개");
+        System.out.println("5개 일치, 보너스 볼 일치 (30,000,000원) - "+ win[3] +"개");
+        System.out.println("6개 일치 (2,000,000,000원) - "+ win[4] +"개");
+        System.out.println("총 수익률은 " + avg + "%입니다.");
+    }
+
+
+}

src/main/java/lotto/UserHelp.java

@@ -0,0 +1,25 @@
+package lotto;
+
+public class UserHelp {
+
+    public static void errorUserBuy() {
+        System.out.println("[ERROR] 지불한 금액이 많거나 적습니다.");
+        throw new IllegalArgumentException();
+    }
+
+    public static void errorLuckyNumber_size() {
+        System.out.println("[ERROR] 로또 번호의 개수는 6개입니다.");
+        throw new IllegalArgumentException();
+    }
+
+    public static void errorLuckyNumber_number() {
+        System.out.println("[ERROR] 로또 번호는 1부터 45 사이의 숫자여야 합니다.");
+        throw new IllegalArgumentException();
+    }
+
+    public static void errorPlusNumber() {
+        System.out.println("[ERROR] 보너스 번호는 로또 당첨 번호에 없는 숫자여야 합니다.");
+        throw new IllegalArgumentException();
+    }
+
+}