March 2014 update
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1846 changed files with 21876 additions and 5203 deletions
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@ -1,6 +1,6 @@
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>>> def happy(n):
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past = set()
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while n <> 1:
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while n != 1:
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n = sum(int(i)**2 for i in str(n))
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if n in past:
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return False
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