I have to say that this is a definition of palindrome that I have never seen before, and one that I don't consider reasonable.
On Thu, Jan 10, 2013 at 10:50 AM, Roger Hui <[email protected]>wrote: > Ah. In that case there is a shorter computation: > > s=: 'abccdadba' > +/ (#:}.i.2^#s) (-:|.)@# s > 50 > > > > On Thu, Jan 10, 2013 at 10:42 AM, Don Guinn <[email protected]> wrote: > >> Could they be counting duplicates? >> >> $ ~. (#~(-:|.)&>) 'abccdadba'<@:#"1~ }. #: i.2^9 >> >> 29 >> >> $ (#~(-:|.)&>) 'abccdadba'<@:#"1~ }. #: i.2^9 >> >> 50 >> >> >> On Thu, Jan 10, 2013 at 11:39 AM, Roger Hui <[email protected] >> >wrote: >> >> > $ ~. (#~(-:|.)&>) 'abccdadba'<@:#"1~ }. #: i.2^9 >> ---------------------------------------------------------------------- >> For information about J forums see http://www.jsoftware.com/forums.htm >> > > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
