Talk:Kaprekar numbers: Difference between revisions

::As Ledrug says, the only reason to print f1f2 is showing how N^2 may be cut to prove it's a Kaprekar number. But it's not really related to

::Kaprekar numbers, it's a "printing in base B" subtask.

:True. I added the non-base10 extra requirement, and the printing part is there to clearly show if a solution decoupled the numerical aspect from a number's string representation. The base 17 was specifically chosen because languages often can handle base conversion up to 16 natively, so 17 may require a hand-rolled string conversion, which can also be interesting while not difficult. Plus, if you print it out in base 17, it's much easier for a human reader to see the correctness of the solution. --[[User:Ledrug|Ledrug]] 21:25, 26 June 2011 (UTC)