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[로또 미션] 신예린 미션 제출합니다. #19
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958541e
feat: 로또 구매할 금액 입력
nyeroni 8627586
feat: 구매한 로또 출력
nyeroni c086150
feat: 로또 랜덤 번호로 생성
nyeroni d435b8e
feat: 로또 생성
nyeroni 07b7bc7
feat: 총 구매한 로또를 list로 생성
nyeroni 5ed6fea
feat: 구매할 가격 입력 후 해당 가격 만큼 로또 생성 및 출력
nyeroni 2fd7c31
feat: 실행
nyeroni ebbd2b3
feat: 랜덤 숫자 생성 변경
nyeroni 2a199f1
feat: 정렬 코드 삭제
nyeroni 2d59e3d
feat: 로또 랜덤 생성 중복 방지 추가
nyeroni 6b2269c
feat: 당첨 번호 입력 및 당첨 개수, 수익률 계산 및 출력
nyeroni 7052bdd
feat: 메서드 명 변경 및 로또 생성 오류 해결
nyeroni 4375301
Refactor: 불필요한 코드 정리
nyeroni e2860da
feat: 요구사항 정리
nyeroni 49773c8
feat: 출력 문구 enum으로 설정
nyeroni 9c28320
feat: 출력 문구 수정 및 로또 출력 방식 변경
nyeroni 2fe5105
feat: 변수명 변경 및 보너스 번호 매치 메서드 생성
nyeroni 4595b55
feat: 수동 로또 생성
nyeroni 561a3b3
feat: 수동 로또 생성 및 로또 목록 출력 방식 변경
nyeroni 0e387fb
feat: enum타입 수정
nyeroni cfe53f4
feat: 투입 금액 및 로또 구매 개수 예외 처리
nyeroni ef9bdab
feat: 수동 개수 예외 처리 및 설정
nyeroni 3d69130
feat: 보너스넘버 예외 처리 및 설정
nyeroni f1804d5
feat: 로또 예외 처리
nyeroni 652c085
feat: 예외 처리 및 수정
nyeroni 7beec8d
feat: 결과 출력 수정
nyeroni 48b8f00
feat: 예외 문구 수정
nyeroni 04d0f96
feat: 예외 문구 수정
nyeroni 2fd040c
feat: 생성자 추가
nyeroni 4f9977c
feat: 생성자 추가
nyeroni 2f51b48
test: 테스트코드 작성
nyeroni 36e8947
test: 테스트코드 작성
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## 🔨 구현 기능 목록 | ||
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### 입력 | ||
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- 구입 금액 입력 | ||
- 한 장당 1000원 | ||
- 1000원으로 나누어 떨어지지 않으면 예외 처리 | ||
- 수동으로 구매할 로또 수 입력 | ||
- 숫자 외의 입력은 모두 예외처리 | ||
- 수동으로 구매할 로또 번호 입력 | ||
- 번호는 쉼표(,)로 구분 | ||
- 숫자와 쉼표(,) 외의 입력은 모두 예외 처리 | ||
- 6개가 되지 않는다면 예외 처리 | ||
- 당첨 번호 입력 | ||
- 번호는 쉼표(,)로 구분 | ||
- 숫자와 쉼표(,) 외의 입력은 모두 예외 처리 | ||
- 6개가 되지 않는다면 예외 처리 | ||
- 보너스 번호 입력 | ||
- 숫자 외의 입력은 모두 예외처리 | ||
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### 출력 | ||
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- 수동 로또와 자동 로또 발행 | ||
- 오름차순으로 정렬해서 보여줌 | ||
- 중복되지 않는 6개 숫자 | ||
- 당첨 내역 출력 | ||
- `3개 일치 (5000원) - n개` | ||
- `4개 일치 (50000원) - n개` | ||
- `5개 일치 (1500000원) - n개` | ||
- `5개 일치, 보너스 볼 일치 (30000000원) - n개` | ||
- `6개 일치 (2000000000원) - n개` | ||
- 수익률 출력 | ||
- `총 수익률은 n입니다.` | ||
- 소숫점 둘째자리 밑으론 버림 | ||
- 예외 상황시 에러 문구 출력 | ||
- `[ERROR] error message` | ||
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### 게임 진행 | ||
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- 구입 금액을 입력 | ||
- 수동으로 구매할 로또 수 입력 | ||
- 수동 로또 번호 입력 | ||
- 로또 번호 1~45 사이의 중복되지 않는 정수로 6개 무작위 추첨해서 구입한 개수(수동 로또 개수 제외) 만큼 자동 로또 발행 | ||
- 당첨 번호와 보너스 번호를 입력받음 | ||
- 일치하는 내역과 총 수익률을 출력 | ||
- 예외가 발생할 경우 예외 문구 출력 |
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import controller.LottoController; | ||
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import java.io.IOException; | ||
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public class Application { | ||
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public static void main(String [] args) throws IOException { | ||
LottoController lottoController = new LottoController(); | ||
} | ||
} |
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package controller; | ||
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import model.AutoLotto; | ||
import model.Lotto; | ||
import model.LottoList; | ||
import view.InputView; | ||
import view.OutputView; | ||
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import java.util.ArrayList; | ||
import java.util.List; | ||
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public class LottoController { | ||
private InputView inputView = new InputView(); | ||
private OutputView outputView = new OutputView(); | ||
private LottoList lottoList; | ||
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public LottoController(){ | ||
startLottoGame(); | ||
} | ||
public void startLottoGame() { | ||
int price = receiveMoneyInput(); | ||
int manualLottoCount = manualLottoCount(); | ||
displayLottoTickets(price, manualLottoNumbers(manualLottoCount)); | ||
Lotto winningNumbers = getWinningNumbers(); | ||
int bonusNum = receiveBonusNumberInput(); | ||
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int[] matchCounts = calculateMatches(lottoList, winningNumbers, bonusNum); | ||
double winRate = calculateWinningRate(matchCounts, price); | ||
outputView.printResults(matchCounts, Math.floor(winRate*100)/100 ); | ||
} | ||
private int manualLottoCount(){ | ||
return convertStringToInt(inputView.inputManualLottoCount()); | ||
} | ||
private List<Lotto> manualLottoNumbers(int count){ | ||
List<String> manualLottoNums = inputView.manualLottos(count); | ||
List<Lotto> manualLottos = new ArrayList<>(); | ||
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for (String manualLotto : manualLottoNums) { | ||
Lotto lotto = new Lotto(); | ||
manualLottos.add(lotto.convertToList(manualLotto)); | ||
} | ||
return manualLottos; | ||
} | ||
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private int receiveBonusNumberInput() { | ||
return convertStringToInt(inputView.inputBonusNumber()); | ||
} | ||
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private int receiveMoneyInput(){ | ||
return convertStringToInt(inputView.inputPrice()); | ||
} | ||
private int convertStringToInt(String price){ | ||
return Integer.parseInt(price); | ||
} | ||
private void displayLottoTickets(int price, List<Lotto> lottos){ | ||
int autoCount = price/1000 - lottos.size(); | ||
int manualCount = lottos.size(); | ||
outputView.printTicketCount(autoCount, manualCount); | ||
lottoList = generateLottoList(autoCount, lottos); | ||
outputView.printLottoNumbers(lottoList); | ||
} | ||
private LottoList generateLottoList(int count, List<Lotto> lottos){ | ||
lottoList = new LottoList(); | ||
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for (Lotto lotto : lottos) { | ||
lottoList.setLottoList(lotto); | ||
} | ||
for(int i=0; i<count; i++){ | ||
lottoList.setLottoList(generateLotto()); | ||
} | ||
return lottoList; | ||
} | ||
private Lotto generateLotto(){ | ||
List<Integer> numbers = new ArrayList<>(); | ||
AutoLotto autoLotto = new AutoLotto(); | ||
numbers = autoLotto.getAutoLotto(); | ||
return new Lotto(numbers); | ||
} | ||
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private Lotto getWinningNumbers(){ | ||
String winnerNumbersStr = inputView.inputWinnerNumber(); | ||
Lotto winningLotto = new Lotto(); | ||
return winningLotto.convertToList(winnerNumbersStr); | ||
} | ||
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private int [] calculateMatches(LottoList ticketList, Lotto winningNumbers, int bonusNum){ | ||
int [] matchCounts = new int[5]; | ||
for(Lotto ticket : ticketList.getLottoList()) { | ||
int countMatches = ticket.calculateMatches(winningNumbers); | ||
if(countMatches == 3){ | ||
matchCounts[0] ++; | ||
} | ||
else if (countMatches == 4){ | ||
matchCounts[1] ++; | ||
} | ||
else if(countMatches == 5){ | ||
if(ticket.bonusMatches(bonusNum)){ | ||
matchCounts[3] ++; | ||
} | ||
else matchCounts[2] ++; | ||
} | ||
else if(countMatches == 6){ | ||
matchCounts[4] ++; | ||
} | ||
} | ||
return matchCounts; | ||
} | ||
private double calculateWinningRate(int [] matchCounts, int price){ | ||
int totalWinnings = matchCounts[0] * 5000 + matchCounts[1] * 50000 + matchCounts[2] * 1500000 + matchCounts[3] * 30000000 + matchCounts[4] * 2000000000; | ||
double winningRate = (double) totalWinnings / (double) price; | ||
return winningRate; | ||
} | ||
} |
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package model; | ||
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import java.util.*; | ||
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public class AutoLotto { | ||
private static final int MIN_LOTTO_NUMBER = 1; | ||
private static final int MAX_LOTTO_NUMBER = 45; | ||
private static final int CNT_LOTTO_NUMBER = 6; | ||
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private static List<Integer> lottoNums = new ArrayList<>(); | ||
public AutoLotto(){ | ||
createAutoLotto(); | ||
} | ||
public void createAutoLotto(){ | ||
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List<Integer> numbers = new ArrayList<>(); | ||
for (int i = MIN_LOTTO_NUMBER; i <= MAX_LOTTO_NUMBER; i++) { | ||
numbers.add(i); | ||
} | ||
Collections.shuffle(numbers); | ||
lottoNums = new ArrayList<>(); | ||
for (int i = 0; i < CNT_LOTTO_NUMBER; i++) { | ||
int uniqueNumber = numbers.get(i); | ||
while (lottoNums.contains(uniqueNumber)) { | ||
Collections.shuffle(numbers); | ||
uniqueNumber = numbers.get(i); | ||
} | ||
lottoNums.add(uniqueNumber); | ||
} | ||
Collections.sort(lottoNums); | ||
} | ||
public List<Integer> getAutoLotto(){ | ||
return lottoNums; | ||
} | ||
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} |
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package model; | ||
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import java.util.ArrayList; | ||
import java.util.List; | ||
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public class Lotto { | ||
private static final int BONUS_NUMBER_INDEX = 6; | ||
private List<Integer> numbers; | ||
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public Lotto(List<Integer> numbers) { | ||
this.numbers = numbers; | ||
} | ||
public Lotto(){ | ||
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} | ||
public Lotto convertToList(String lottoNumbersStr) { | ||
String[] str = lottoNumbersStr.split(",\\s*"); | ||
List<Integer> lottoList = new ArrayList<>(); | ||
for (String s : str) { | ||
lottoList.add(Integer.parseInt(s)); | ||
} | ||
Lotto lotto = new Lotto(lottoList); | ||
return lotto; | ||
} | ||
public List<Integer>getNumbers(){ | ||
return numbers; | ||
} | ||
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public int calculateMatches(Lotto winningLotto) { | ||
int cnt = 0; | ||
List<Integer> winningLottoList = winningLotto.getNumbers(); | ||
for (Integer integer : winningLottoList) { | ||
if(numbers.contains(integer)){ | ||
cnt ++; | ||
} | ||
} | ||
return cnt; | ||
} | ||
public boolean bonusMatches(int bonusNum) { | ||
if(numbers.contains(bonusNum)){ | ||
return true; | ||
} | ||
return false; | ||
} | ||
} |
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package model; | ||
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import java.util.ArrayList; | ||
import java.util.List; | ||
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public class LottoList { | ||
List<Lotto> lottoList = new ArrayList<>(); | ||
private int totalPrice; | ||
public LottoList(){ | ||
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} | ||
public void setLottoList(Lotto lotto){ | ||
lottoList.add(lotto); | ||
} | ||
public List<Lotto> getLottoList(){ | ||
return lottoList; | ||
} | ||
} |
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package model; | ||
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public class UserCount { | ||
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private static final int LOTTO_UNIT = 1000; | ||
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private final int count; | ||
private final int price; | ||
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public UserCount(String price){ | ||
int priceNum = convertStringToInt(price); | ||
validate(priceNum); | ||
this.price = priceNum; | ||
this.count = calculateCount(priceNum); | ||
} | ||
public int calculateCount(int price){ | ||
return price/1000; | ||
} | ||
public int getCount(){ | ||
return count; | ||
} | ||
public int getPrice(){ | ||
return price; | ||
} | ||
public int convertStringToInt(String price){ | ||
try { | ||
return Integer.parseInt(price); | ||
} catch (NumberFormatException e) { | ||
System.err.println("[ERROR] 숫자로만 입력해주세요."); | ||
throw e; | ||
} | ||
} | ||
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public void validate(int priceNum){ | ||
validateRange(priceNum); | ||
validateUnit(priceNum); | ||
} | ||
public void validateRange(int priceNum){ | ||
if(priceNum<=0){ | ||
throw new IllegalArgumentException(); | ||
} | ||
} | ||
public void validateUnit(int priceNum){ | ||
if(priceNum % LOTTO_UNIT != 0){ | ||
throw new IllegalArgumentException("[ERROR] 구입 금액은 1000원 단위로 입력되어야 합니다."); | ||
} | ||
} | ||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. 좋은 예외처리 같습니다! |
||
} |
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package model; | ||
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public enum WinningType { | ||
FIFTH(3, 5000, "3개 일치 (5000원)- "), | ||
FOURTH(4, 50000, "4개 일치 (50000원)- "), | ||
THIRD(5, 150000, "5개 일치 (1500000원)- "), | ||
SECOND(5, 30000000, "5개 일치, 보너스 볼 일치(30000000원)- "), | ||
FIRTH(6, 2000000000, "6개 일치 (2000000000원)- "); | ||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. enum 활용을 잘 하신 것 같습니다! 같은 의미인 것 끼리 모아서 메시지를 구성할때에도 편리할 것 같아요 |
||
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private static final int WINNING_MIN_COUNT = 3; | ||
private static final String ERROR_MESSAGE = "[ERROR]"; | ||
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private int countOfCorrect; | ||
private int reward; | ||
private String message; | ||
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WinningType(int countOfCorrect, int reward, String message) { | ||
this.countOfCorrect = countOfCorrect; | ||
this.reward = reward; | ||
this.message = message; | ||
} | ||
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public String getMessage(){ | ||
return message; | ||
} | ||
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} |
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궁금한점이 있습니다. numbers에는 이미 유니크한 숫자들이 shuffle되어있는 것 아닌가요? 이미 중복되지 않는 것은 보장된 것 같은데 한번 더 중복을 체크하시는 이유가 궁금합니다.