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Haskell Quiz/Happy Numbers

RubyQuiz #93: A happy number is found using the following process: Take the sum of the squares of its digits, and continue iterating this process until it yields 1, or produces an infinite loop.

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1 The Problem

http://www.rubyquiz.com/quiz93.html

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2 Solutions

Dan Doel

Retrieved from "http://haskell.org/haskellwiki/Haskell_Quiz/Happy_Numbers"

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