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와 2문제를..! 열심히 하시는 모습이 너무 좋네요 역시 차민님 👍
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| my_string.toCharArray().forEach(){ | ||
| i -> answer = i + answer | ||
| } |
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문자열 덧셈(+)이 누적될 때 매번 새 String 생성이 되서 성능이 떨어질 수 있어요!
reversed()를 사용해보거나 StringBuilder를 사용해보시면 더 좋을 것 같아요!
pg_크기가 작은 문자열.kt
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length는 중간에 변하지 않을 것 같은데 val로 선언해도 좋을 것 같아요!
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뒤집힌 문자열을 풀었어요
두개의 포인트를 잡았습니다.
크기가 작은 문자열 문제는 map을 공부해보고 다시 풀어 볼 예정입니다!