* Happy number (new algorithm)
adding new algorithm
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* Update maths/special_numbers/happy_number.py
Co-authored-by: Christian Clauss <cclauss@me.com>
* Update happy_number.py
added new changes
* Update happy_number.py
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* Update happy_number.py
* Update happy_number.py
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* Update happy_number.py
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* Update happy_number.py
added ValueError part in code
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Co-authored-by: Christian Clauss <cclauss@me.com>