[WHYjun] WEEK 03 solutions=#2112
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TonyKim9401 merged 2 commits intoDaleStudy:mainfrom Dec 1, 2025
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seungriyou
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Nov 30, 2025
| def hammingWeight(self, n: int) -> int: | ||
| result = 0 | ||
| for i in range(32): | ||
| if (n >> i) & 1: |
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bit shifting을 이용하여 bit manipulation 문제의 의도를 잘 파악하신 것 같습니다!
추가로 n & n-1로 오른쪽에서부터 1인 비트를 하나씩 지워가며 개수를 세는 방식인 Brian Kernighan's 알고리즘이라는 방법도 있어 공유드립니다~!
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