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Step3 - 로또(2등) #3199

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Merged
merged 4 commits into from
May 15, 2023
Merged

Step3 - 로또(2등) #3199

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952d908
docs: <3단계> 기능 요구 사항 정리
May 13, 2023
459d3a2
feat: <3단계> 로또 2등 당첨 확인
May 13, 2023
a0f4fe2
feat: <3단계> 피드백 반영
May 14, 2023
f0da16d
refactor: <3단계> lottoTicket 검증 주체 변경
May 14, 2023
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4 changes: 2 additions & 2 deletions src/main/java/step2/controller/LottoGameController.java
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Original file line number Diff line number Diff line change
Expand Up @@ -23,15 +23,15 @@ public void playLottoGame() {

List<LottoTicket> lottoTickets = lottoGames.buyLottoGame(gameCount);
ResultView.printLottoTicket(lottoTickets);
LottoTicket winningNumber = lottoGames.readWinningNumber(InputView.readWinningNumbers());
LottoTicket winningTicket = lottoGames.readWinningNumber(InputView.readWinningNumbers());
int bonusNumber = InputView.readBonusNumber();

ResultView.printBlankLine();
ResultView.printMessage("당첨 통계");

LottoResultReport lottoResultReport = new LottoResultReport();
for (LottoTicket lottoTicket : lottoTickets) {
lottoResultReport.recordRank(winningNumber.checkLottoTicket(lottoTicket, bonusNumber));
lottoResultReport.recordRank(lottoTicket.checkLottoTicket(winningTicket, bonusNumber));
}

ResultView.printResultReport(lottoResultReport);
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18 changes: 4 additions & 14 deletions src/main/java/step2/domain/LottoResultReport.java
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Expand Up @@ -6,30 +6,20 @@

public class LottoResultReport {

static final int EMPTY_COUNT = 0;
static final int ONE = 1;

private Map<Rank, Integer> lottoResultReport;

public LottoResultReport() {
lottoResultReport = new HashMap<>();
}

public int recordRank(Rank rank) {
if (lottoResultReport.containsKey(rank)) {
Integer cnt = lottoResultReport.get(rank);
lottoResultReport.put(rank, cnt + 1);
return cnt;
}
lottoResultReport.put(rank, 1);
return ONE;
Integer value = lottoResultReport.getOrDefault(rank, 0);
lottoResultReport.put(rank, value + 1);
return lottoResultReport.get(rank);
Comment on lines +16 to +18
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아래 게시글을 한번 확인해보고 한번 더 개선해보면 좋을 것 같아요!!

https://blog.advenoh.pe.kr/java/%EC%9E%90%EB%B0%948-HashMap-%EB%B3%B4%EB%8B%A4-%EA%B0%84%EA%B2%B0%ED%95%98%EA%B3%A0-%ED%9A%A8%EA%B3%BC%EC%A0%81%EC%9C%BC%EB%A1%9C-%EC%9E%91%EC%84%B1%ED%95%98%EA%B8%B0/

}

public int findReportByMatchCount(Rank rank) {
if (lottoResultReport.containsKey(rank)) {
return lottoResultReport.get(rank);
}
return EMPTY_COUNT;
return lottoResultReport.getOrDefault(rank, 0);
}

public double calculateProfit(int gameCount) {
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6 changes: 3 additions & 3 deletions src/main/java/step2/domain/LottoTicket.java
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Expand Up @@ -29,12 +29,12 @@ public boolean isContain(Integer number) {
return this.lottoTicket.contains(number);
}

public Rank checkLottoTicket(LottoTicket compareTarget, int bonusNumber) {
public Rank checkLottoTicket(LottoTicket winningTicket, int bonusNumber) {
int count = (int) lottoTicket.stream()
.filter(i -> compareTarget.isContain(i))
.filter(i -> winningTicket.isContain(i))
.count();

if(count == 5 && compareTarget.isContain(bonusNumber)) {
if(count == 5 && isContain(bonusNumber)) {
return Rank.SECOND;
}

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2 changes: 1 addition & 1 deletion src/test/java/step2/domain/LottoTicketTest.java
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Expand Up @@ -37,7 +37,7 @@ static Stream<Arguments> winningNumbersSample() throws Throwable {
@MethodSource("secondRankSample")
public void 로또_2등_당첨(List<Integer> numbers, List<Integer> winningNumbers, int bonusNumber) throws Exception {
LottoTicket winningTicket = new LottoTicket(winningNumbers);
assertThat(winningTicket.checkLottoTicket(new LottoTicket(numbers), bonusNumber)).isEqualTo(Rank.SECOND);
assertThat(new LottoTicket(numbers).checkLottoTicket(winningTicket, bonusNumber)).isEqualTo(Rank.SECOND);
}

static Stream<Arguments> secondRankSample() throws Throwable {
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