The negative in my algorithm was to indicate "working backwards".
That is, if I want to end up with 2 cakes after bridge 7, during which you gained 1 and lost x/2, what must x be? Given that, what must you have had before bridge 6? And so on. In other words, that expression was intended to be the J transliteration of "If you 'undo' 1+x%2 seven times, what do you start out with?". -Dan Please excuse typos; sent from a phone. > On Jun 9, 2014, at 2:25 PM, Raul Miller <[email protected]> wrote: > > For what it's worth, my algorithm came up with the same answer as Dan's for > the 7 bridge 2 cake case, but comes up with a different answer for the 1 > bridge 3 case case: > +:@<:^:7: 2 > > +:@<:^:1: 3 > > -- > Raul > > > > >> On Mon, Jun 9, 2014 at 2:06 PM, greg heil <[email protected]> wrote: >> >> Dan >> >>> Rounding amongst Trolls is pretty peculiar;) Say you wanted to give >> Granny 3 cakes and only had to cross one bridge ... Your algorithm says >> you only need start with 2.5 cakes! (Kinda unhygienic on the offspring's >> part;-) >> >> greg >> ~krsnadas.org >> ---------------------------------------------------------------------- >> For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
