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Re: Re: Binomial Golf

by Arguile (Hermit)
on May 30, 2001 at 15:23 UTC ( [id://84221]=note: print w/replies, xml ) Need Help??


in reply to Re: Binomial Golf
in thread Binomial Golf

Check the thread Binomial Expansion there's a really interesting n choose r sub there by ariels and a proof underneath by japhy. (Among other things) 
# copy of said subroutine

sub nCr {
  my ($n, $r) = @_;
  my $res = 1;
  for my $i (1..$r) {
    $res *= $n--;
    $res /= $i;
  }
  $res;
}

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Re: Re: Re: Binomial Golf
by gumpu (Friar) on May 30, 2001 at 15:50 UTC

    Thanks! That's a very elegant solution. I spend a day or so comming up with a program to do the same. And that was about a page long. Very nifty.

    Have Fun

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