Yes, but different ways give different insights. See: http://www.jsoftware.com/jwiki/Essays/Pascal's_Triangle
As an exercise, see how many ways you can come up with to generate the identity matrix. http://www.jsoftware.com/jwiki/Essays/Identity_Matrix ----- Original Message ----- From: Alex Gian <[email protected]> Date: Monday, February 15, 2010 16:26 Subject: Re: [Jprogramming] Constant functions To: Programming forum <[email protected]> > On Mon, 2010-02-15 at 10:24 +0000, Ian Clark wrote: > > > One can learn a lot of tacit J just by analysing that > example: bc=: > > < 0&(, + ,~) 1: > > Can't pretend I understand much of it, but I intend to take it > apart in > tonight's "Learning J" session! Great to see all this stuff. > > Now forgive me if I'm missing something in all this (as a newb) but > wouldn't a simpler way of generating binomial coefficients just be: > > !/~i.10 > > 1 1 1 1 1 1 1 1 1 1 > 0 1 2 3 4 5 6 7 8 9 > 0 0 1 3 6 10 15 21 28 36 > 0 0 0 1 4 10 20 35 56 84 > 0 0 0 0 1 5 15 35 70 126 > 0 0 0 0 0 1 6 21 56 126 > 0 0 0 0 0 0 1 7 28 84 > 0 0 0 0 0 0 0 1 8 36 > 0 0 0 0 0 0 0 0 1 9 > 0 0 0 0 0 0 0 0 0 1 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
