[robinyoon-dev] WEEK 05 Solutions#2495
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robinyoon-dev wants to merge 5 commits intoDaleStudy:mainfrom
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reeseo3o
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Apr 4, 2026
| for (str of strs) { | ||
| let strCountString = getStrCountString(str); | ||
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| let hasSameCountIndex = countArr.findIndex((item) => item === strCountString); |
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findIndex로 매번 선형 탐색을 해서, 입력 문자열 수가 커지면 시간 복잡도가 많이 커질 것 같아요.
countArr 대신 Map<string, string[]>처럼 strCountString을 key로 바로 그룹 배열을 찾아갈 수 있게 두면, 여기 조회는 평균 O(1)에 처리돼서 전체 성능이 더 좋아질 것 같습니다!
| const Z_ASCII = 'z'.charCodeAt(0); | ||
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| let charCounts = Z_ASCII - A_ASCII + 1; | ||
| let charCountArr = new Array(charCounts).fill(0); //인덱스가 알파벳을 나타냄. |
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각 문자열을 알파벳 카운트 배열로 바꿔서 비교하는 방식 자체가 정석적인 anagram 풀이 아이디어라서, 접근을 잘 잡으신 것 같아요!
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