14 lines
307 B
Python
14 lines
307 B
Python
class Solution:
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def isHappy(self, n: int) -> bool:
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s=str(n)
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while not len(s)==1:
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r=0
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for i in range(len(s)):
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r+=int(s[i])**2
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s=str(r)
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if s=="1" or s=="7":
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return True
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else:
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return False
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