[kayden] Week 09 Solutions #526
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lymchgmk
approved these changes
Oct 11, 2024
| # 공간복잡도: O(N) | ||
| def hasCycle(self, head: Optional[ListNode]) -> bool: | ||
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| visited = set() |
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이미 방문한 node를 재방문하면 cycle이 존재한다는 풀이가 명확해서 좋은 것 같습니다. Follow up에 공간복잡도를 O(1)으로 해결해보라는 방법도 고민해보시면 좋을 것 같습니다.
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| prev = 0 | ||
| answer = float('-inf') | ||
| for num in nums: | ||
| if prev + num > num: | ||
| prev += num | ||
| else: | ||
| prev = num | ||
| answer = max(answer, prev) |
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이 문제의 경우 유명한게 Kadane 알고리즘도 있지만, 면접에서 divide and conquer로도 풀어보라는 경우가 많다고 하더라고요 참고해보시면 좋을 것 같습니다.
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답안 제출 문제
너무 늦게 올렸네요.. 면접이 많이 잡혀서 급하게 풀고 올립니다!
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