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[hj4645] WEEK 01 solutions #1688
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0dab597
Solve: contains duplicate
hj4645 f310a52
add 개행문자
hj4645 1e37b25
Solve: two-sum
hj4645 2efa74a
chore: 개행문자 수정
hj4645 0f90967
Solve: top-k-frequent-elements
hj4645 36449d2
Solve : longest-consecutive-sequence, house-robber
hj4645 1ee09cc
resolve lint errors
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Original file line number | Diff line number | Diff line change |
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class Solution: | ||
# 리스트 안에 동일한 숫자가 2개 이상 존재하면 true를 반환해야 하는 문제 | ||
# Set으로 변환 시 중복이 제거되므로 List와 Set의 크기를 비교해 답을 구할 수 있음 | ||
def containsDuplicate(self, nums: List[int]) -> bool: | ||
return len(nums) != len(set(nums)) | ||
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# Time Complexity | ||
# - set(nums) → O(n) | ||
# - len(nums), len(set(nums)) → O(1) | ||
# - Total: O(n) (n = number of list elements) | ||
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저도 이런 로직으로 풀이해서 바로 이해가 되었습니다.