[윤태권] Week4 문제 풀이 #430
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[윤태권] Week4 문제 풀이 #430
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HC-kang
approved these changes
Sep 7, 2024
| public boolean isPalindrome(String s) { | ||
| s = s.replaceAll("[^a-zA-Z0-9]", "").toLowerCase(); | ||
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| char[] c = s.toCharArray(); |
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제가 자바를 잘 몰라서 궁금한 부분인데, toCharArray()로 변경 없이 string상태로 인덱스 접근하는 방식은 불가능할까요?
명시적인 시간복잡도 감소는 없겠지만, 루프를 한 싸이클 줄일 수 있을 것 같아서요!
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@taekwon-dev 위 의견에 덧붙이자면, toCharArray() 변경하지 않고 바로 인덱스 접근 시 공간복잡도를 N -> 1로 줄일 수 있는 효과가 있을 것으로 보입니다.
@HC-kang 말씀주신 방법은 자바에서 s.charAt(index) 와 같은 방식으로 가능합니다 :)
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