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from collections import Counter | ||
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# Counter 检查数量是否相等,返回一个字典对象(数据结构是散列表) | ||
class Solution: | ||
def reorderedPowerOf2(self, N): | ||
""" | ||
:type N: int | ||
:rtype: bool | ||
""" | ||
count_N=Counter(str(N)) | ||
# any: 只要有一个True,就返回True,全部为False,则返回False | ||
return any(count_N==Counter(str(1<<i)) for i in range(31)) | ||
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s=Solution() | ||
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print(s.reorderedPowerOf2(635824465)) |