A checkerboard related problem: If you cut out two opposite corners of an 8-by-8 checkerboard, can you tile the remaining 62 squares with 2-by-1 rectangles?
On Fri, Oct 20, 2017 at 8:28 AM, Linda Alvord <[email protected]> wrote: > > This gets to the heart of the problem! An addition table. Then, finding > what's left when you divide numbers in half. > > Now, picking your symbols should be fun. > It seems like a good day in kindergarden. > > Linda > > Sent from AOL Mobile Mail > > > -----Original Message----- > From: Roger Hui <[email protected]> > To: Programming forum <[email protected]> > Cc: Linda Alvord <[email protected]>; bill lam <[email protected]> > Sent: Fri, Oct 20, 2017 11:02 AM > Subject: Re: [Jprogramming] unicode > > > 2|+/~i.8 > 0 1 0 1 0 1 0 1 > 1 0 1 0 1 0 1 0 > 0 1 0 1 0 1 0 1 > 1 0 1 0 1 0 1 0 > 0 1 0 1 0 1 0 1 > 1 0 1 0 1 0 1 0 > 0 1 0 1 0 1 0 1 > 1 0 1 0 1 0 1 0 > > '.X'{~2|+/~i.8 > .X.X.X.X > X.X.X.X. > .X.X.X.X > X.X.X.X. > .X.X.X.X > X.X.X.X. > .X.X.X.X > X.X.X.X. > > > > On Fri, Oct 20, 2017 at 1:03 AM, Linda Alvord <[email protected]> > wrote: > > > > Sent from AOL Mobile Mail > > > Can you make a checker board?<div><span style="font-size: 16px;"> </span> > <span style="font-size: 16px;"> d</span> > <span style="font-family: HelveticaNeue, Helvetica, Arial, > sans-serif;">▪¤▪¤▪¤▪¤</span><p dir="ltr"> > ¤▪¤▪¤▪¤▪ > > ▪¤▪¤▪¤▪¤ > > ¤▪¤▪¤▪¤▪ > > ▪¤▪¤▪¤▪¤ > > ¤▪¤▪¤▪¤▪ > > ▪¤▪¤▪¤▪¤ > > ¤▪¤▪¤▪¤▪ > > $d > > 8 8 > > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
