From: ts <decoux@...>
Date: 2006-08-03T19:31:05+09:00
Subject: Re: What's wrong with this recursive function??

>>>>> "K" == Knut erik Teigen <knutert@gmail.com> writes:

 very quickly look

K>   #checks column
K>   col = j
K>   for i in 0..8
K>     if grid[i*9+col]==value
K>       return false
K>     end
K>   end

K>   #checks box
K>   #integer math to find start of box

     # 'i' is always == 8 (see the loop 'for')

K>   i0=(i/3).to_i*3
K>   j0=(j/3).to_i*3

     # useless (#to_i) and false

moulon% ruby -e 'i = 1; p i/3'
0
moulon% 

K>   for i in i0...i0+3


Guy Decoux