On Mar 7, 2007, at 7:57 AM, ramacd wrote:
The article "Life: nasty, Brutish and Short" by(?) Eugene
McDonnell, in an
old Quote Quad, I think, gives many one-liners as well. IIRC, it
uses the
Sharp APL cut operator, which is very similar to the ;. conjunction
in J.
This separates out the 3 3 subarrays, and you can just apply the
life/death
verb to each subarray.
The APL88 Conference Proceedings (Sydney, Australia; APL Quote Quad,
18.2, December 1987) has my discussion of a "Life: Nasty, Brutish and
Short" solution to the game of life program problem [pp 242-247],
with thanks to Donald Knuth and Roger Hui. The final N,B and S
solution uses just 9 tokens.
Is it really 19 years since I wrote it? It was lots of fun.
Eugene
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