Here is the space that is bothering me. The different results are dependent upon the space before the colon.
d=: 13 : '/:~ :/:@": &.>y' d a,b ------T-----┐ │01123│01123│ L-----+------ e=: 13 : '/:~:/:@": &.>y' e a,b 0 1 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of David Mitchell Sent: Thursday, September 29, 2011 6:24 AM To: Programming forum Subject: Re: [Jprogramming] Permutations I find this helpful to see differences: /:~ :/:@": &.>a,b -- ~ --- /: -- : -+- /: -- @ -+- ": -- &. -+- > │ --+ -- a L------+- , L- b /:~:([:/:": )&.>a,b -- /: │ -- ~: │ │ -- [: --+ │ ----+- /: │ +- &. -+ L- ": L----+ L- > │ │ -- a L------+- , L- b -- David Mitchell On 9/29/2011 5:45, Linda Alvord wrote: > The only difference between the correct and the incorrect result is a space > before the second : . Should a space make a difference ever? In the > correct result I can't understand what it is, what it does and why it does > it. > > /:~ :/:@":&.>a,b > ------T-----┐ > │01123│01123│ > L-----+------ > > > /:~:([:/:": )&.>a,b > 0 1 > > Since I set out originally to remove "atop", how can I do it? > > /:~ :([: /: ":)&.>a,b > ------T-----┐ > │10123│32110│ > L-----+------ > > Hope you can help. Thanks. Linda > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Ian Clark > Sent: Thursday, September 22, 2011 9:13 PM > To: Programming forum > Subject: Re: [Jprogramming] Permutations > > Off-the-cuff... > > a=: 10123 > b=: 32110 > c=: 32100 > -:/ /:~ :/:@":&.> a,b > 1 > -:/ /:~ :/:@":&.> a,c > 0 > > > On Thu, Sep 22, 2011 at 10:41 PM, David Vaughan > <[email protected]> wrote: >> Hi, what is the best (fastest) way to check whether a number is a > permutation of another number? >> I've tried listing all permutations of one number and checking whether the > other number is in the list of permutations. This seems pretty slow, so I > was hoping for a faster method. >> >> Thanks. >> ---------------------------------------------------------------------- >> 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 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
