From: Harry Kakueki <list.push@...>
Date: 2013-06-01T22:21:16+09:00
Subject: Re: Eloquent Ruby Kaprekar's Number

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>
>  This should be faster than my previous solution (if it matters).
>



def try2(n)
  s, q = n.to_s.size, n*n
  (s...s*2).each do|x|
    y = 10**x
    return true if n == q/y+q%y
  end
  false
end



Harry

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<div dir=3D"ltr"><div class=3D"gmail_extra"><div class=3D"gmail_quote"><blo=
ckquote class=3D"gmail_quote" style=3D"margin:0pt 0pt 0pt 0.8ex;border-left=
:1px solid rgb(204,204,204);padding-left:1ex">=A0This should be faster than=
 my previous solution (if it matters).<br>
</blockquote><div><br><br>=A0</div>def try2(n)<br>=A0 s, q =3D n.to_s.size,=
 n*n<br>=A0 (s...s*2).each do|x|<br>=A0=A0=A0 y =3D 10**x<br>=A0=A0=A0 retu=
rn true if n =3D=3D q/y+q%y<br>=A0 end<br>=A0 false<br>end<br><br><br><br><=
/div><div class=3D"gmail_quote">
Harry<br><br></div></div></div>

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