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Ruby
[QUIZ] Happy Numbers (#93)
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[QUOTE="Chris Gehlker, post: 4525206"] That's not quite what the cited article says. it says that happy numbers result in an infinite loop on 1 and unhappy numbers result in an infinite loop on the series: 4, 16, 37, 58, 89, 145, 42, 20, 4, ... and that there are no other possibilities. [/QUOTE]
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[QUIZ] Happy Numbers (#93)
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