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langs a-z

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Ingy döt Net 2013-04-10 22:43:41 -07:00
parent db842d013d
commit d066446780
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Task/Digital-root/Mathematica/digital-root.math Normal file
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seq[n_, b_] := FixedPointList[Total[IntegerDigits[#, b]] &, n];
root[n_Integer, base_: 10] := If[base == 10, #, BaseForm[#, base]] &[Last[seq[n, base]]]
persistance[n_Integer, base_: 10] := Length[seq[n, base]] - 2;