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author | jack <[email protected]> | 2024-06-14 13:13:15 -0600 |
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committer | jack <[email protected]> | 2024-06-14 13:13:15 -0600 |
commit | d343a3b18dbaca9297d4f7b2280c4a16f0a5c8aa (patch) | |
tree | 96df922dae2a5073d9a50ea70c7aae6aa37e3ebe /power_of_two.py | |
download | leetcode-d343a3b18dbaca9297d4f7b2280c4a16f0a5c8aa.tar.gz leetcode-d343a3b18dbaca9297d4f7b2280c4a16f0a5c8aa.zip |
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-rw-r--r-- | power_of_two.py | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/power_of_two.py b/power_of_two.py new file mode 100644 index 0000000..80dd7d0 --- /dev/null +++ b/power_of_two.py @@ -0,0 +1,24 @@ +# 231. Power of Two + +""" +given an integer 'n', return true if it is a power of two. otherwise, return +false. an integer 'n' is a power of two if there exists an integer 'x' such +that 'n == 2^x' +""" + + +class Solution(object): + def isPowerOfTwo(self, n): + """ + :type n: int + :rtype: bool + """ + if n <= 0: + return False + return not (n & (n - 1)) + +if __name__ == "__main__": + obj = Solution() + print(obj.isPowerOfTwo(1)) + print(obj.isPowerOfTwo(16)) + print(obj.isPowerOfTwo(3)) |