[feat/next-step#1] step1

Author: borntocode2

src/main/java/Application.java

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+import controller.LottoController;
+
+public class Application {
+
+    public static void main(String[] args) {
+        LottoController lottoController = new LottoController();
+        lottoController.run();
+    }
+}

src/main/java/controller/LottoController.java

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+package controller;
+
+import model.Lotto;
+import view.InputView;
+import view.ResultView;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class LottoController {
+
+    public void run() {
+        int purchaseAmount = InputView.getPurchaseAmount();
+
+        int ticketCount = Lotto.getTicketCount(purchaseAmount);
+
+        List<Lotto> tickets = Lotto.generateLottoTickets(ticketCount);
+
+        ResultView.printOrderTickets(ticketCount);
+        ResultView.printTickets(ticketCount, formatTickets(tickets));
+    }
+
+    public List<String> formatTickets(List<Lotto> tickets) {
+        List<String> formattedTickets = tickets.stream()
+                .map(lotto -> lotto.getNumbers()
+                        .stream()
+                        .sorted()
+                        .map(String::valueOf)
+                        .collect(Collectors.joining(",","[","]")))
+                .toList();
+
+        return formattedTickets;
+    }
+}

src/main/java/model/Lotto.java

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+package model;
+
+import java.util.*;
+import java.util.stream.Collectors;
+import java.util.stream.IntStream;
+
+public class Lotto {
+
+    // 로또 번호 관련 상수 선언
+    public static final int LOTTO_MIN_NUMBER = 1;
+    public static final int LOTTO_MAX_NUMBER = 45;
+    public static final int LOTTO_CREATE_SIZE = 6;
+    public static final int LOTTO_PRICE = 1000;
+    public static final List<Integer> LOTTO_NUMBER_POOL =
+            IntStream
+            .rangeClosed(LOTTO_MIN_NUMBER,LOTTO_MAX_NUMBER)
+            .boxed()
+            .collect(Collectors.toList());
+
+    private List<Integer> numbers = new ArrayList<>();
+
+    public static int getTicketCount(int purchaseAmount){
+        return purchaseAmount / LOTTO_PRICE;
+    }
+
+    public Lotto(){
+        this.numbers = createLottoNumbers();
+    }
+
+    private List<Integer> createLottoNumbers(){
+        List<Integer> shuffledNumbers = new ArrayList<>(LOTTO_NUMBER_POOL);
+        Collections.shuffle(shuffledNumbers);
+        numbers = shuffledNumbers.subList(0, LOTTO_CREATE_SIZE);
+
+        return numbers;
+    }
+
+    public static List<Lotto> generateLottoTickets(int ticketCount){
+        List<Lotto> tickets = new ArrayList<>();
+
+        for (int i = 0; i < ticketCount; i++){
+            tickets.add(new Lotto());
+        }
+
+        return tickets;
+    }
+
+    public List<Integer> getNumbers() {
+        List<Integer> sortedNumbers = new ArrayList<>(numbers);
+        Collections.sort(sortedNumbers);
+
+        return sortedNumbers;
+    }
+}

src/main/java/view/InputView.java

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+package view;
+
+import java.util.Scanner;
+
+public class InputView {
+
+    private static final Scanner scanner = new Scanner(System.in);
+
+    public static int getPurchaseAmount(){
+        System.out.println("구입금액을 입력해 주세요.");
+        int purchaseAmount = scanner.nextInt();
+        scanner.close();
+
+        return purchaseAmount;
+    }
+}

src/main/java/view/ResultView.java

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+package view;
+import java.util.List;
+
+public class ResultView {
+
+    public static void printOrderTickets(int ticketCount){
+        System.out.println();
+        System.out.println(ticketCount + "개를 구매했습니다.");
+    }
+
+    public static void printTickets(int ticketCount ,List<String> formattedTickets){
+        for (String ticket : formattedTickets) {
+            System.out.println(ticket);
+        }
+    }
+}