[HoonDongKang] Week 8 solutions#1492
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HoonDongKang merged 5 commits intoDaleStudy:mainfrom May 24, 2025
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Jeehay28
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May 23, 2025
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한 주 동안 문제 푸시느라 정말 고생 많으셨어요! 다음 주도 같이 힘내서 화이팅입니다! 😊
| */ | ||
| function characterReplacement(s: string, k: number): number { | ||
| //시간복잡도 O(n) | ||
| //공간복잡도 O(n) |
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map에는 최대 26개의 알파벳만 key로 들어가므로, 공간 복잡도는 O(1)로 간주할 수 있습니다.
| map.set(s[right], (map.get(s[right]) || 0) + 1); | ||
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| const maxFreq = Math.max(...Array.from(map.values())); | ||
| if (right - left + 1 - maxFreq > k) { |
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right 포인터가 한 칸씩만 움직이기 때문에, 조건이 깨질 때 left 포인터도 한 칸씩만 이동해도 충분하다는 점을 이해하게 되었습니다. 저는 이 부분을 while 문으로 처리했었는데, if 문으로 처리해도 결과가 동일하게 나온다는 것을 확인했습니다. 감사합니다! 👍
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