[jaejeong1] WEEK 01 solutions #326
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코드 마지막 라인에 line break 추가해주시면 좋을 것 같습니다! |
| .toArray(); | ||
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| // 배열에서 상위 k개만 반환 | ||
| return Arrays.copyOf(sortedNums, k); |
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재밌는 코드 잘 보았습니다 : )
풀이에 영향이 있는건 아니지만 궁금한 부분이 있어서 질문드립니다!
// 빈도순 정렬 후 상위 k개만 배열로 반환
return freq.keySet().stream()
.sorted((a, b) -> freq.get(b) - freq.get(a))
.mapToInt(i -> i)
.limit(k)
.toArray();이런식으로 limit 을 걸어줘도 됐을 것 같은데
혹시 Arrays.copyOf를 추가적으로 사용하신 이유가 있으신지 궁금합니다 : )
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좋은 피드백 감사합니다. 두 방법 모두 결과는 같으나
copyOf 사용 시 새 배열 생성으로 인해 불필요한 메모리를 낭비 및 성능적 단점이 있어 보이네요 :)
제안주신 방법이 더 나은 방안으로 보여 피드백 적용해보겠습니다!!
taekwon-dev
reviewed
Aug 17, 2024
Comment on lines
+18
to
+23
| return freq.keySet().stream() | ||
| .sorted((a, b) -> freq.get(b) - freq.get(a)) | ||
| .mapToInt(i -> i) | ||
| .limit(k) // 배열에서 상위 k개만 반환 | ||
| .toArray(); | ||
| } |
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Stream 사용하니까 엄청 직관적으로 정렬 시킬 수 있네요.. 👍
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네 맞습니다!! 스트림의 장점인것 같아요 ㅎㅎ
DaleSeo
approved these changes
Aug 17, 2024
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