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* Update Readme: add commit rule - 규칙내용 추가 * [sql] programmers sql lv.1 가장 최신 날짜 구하기 문제 * Change year to 2020
This reverts commit 71ce751.
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stack 관련 문제 길래, stack 통해 풀으려고 하여 시간이 더 많이 들어간듯 싶습니다.
stack pop이 맨뒤에서 부터 나오는 것과,
heights 배열에서 뒤에서 부터 비교해야 겠구나 생각하면 어느정도 길이 보일듯 싶습니당..