Y'all may be interested in how Dyalog APL does the TAO (total array ordering). https://www.jsoftware.com/papers/TAOaxioms.htm It's different from J because the arrays are different from J.
On Fri, Mar 13, 2020 at 7:19 AM David Mitchell <davidmitch...@att.net> wrote: > This is documented (see Rank sentence in the doc): > > https://code.jsoftware.com/wiki/Vocabulary/slashco#dyadic > > The order of priority for ordering-up is: > > Type: numeric or empty, symbol, character (byte or unicode), and > boxed, are > so ordered > Rank: lower comes before higher > Values: compared after padding with fills to the same shape > Symbols are compared based on their symbol index, not the > character > lists they represent. > > Cheers, > David > > On 3/13/2020 01:19, 'Jon Hough' via Programming wrote: > > Consider the wrods: > > > > words =: 'a';'z';'zza';'abc';'zabc';'abbb' > > sort words > > ????????????????????????????????????????????????????????????????????? > > ???a???z???abbb???abc???zabc???zza??? > > ????????????????????????????????????????????????????????????????????? > > > > the sorted words are not correctly (lexicographically) sorted. > > > > If I replace 'z' with 'z ' (space after z character) > > words =: 'a';'z ';'zza';'abc';'zabc';'abbb' > > sort words > > ???????????????????????????????????????????????????????????????????????? > > ???a???abbb???abc???z ???zabc???zza??? > > ???????????????????????????????????????????????????????????????????????? > > > > the strings are correctly sorted. > > It seems sort has trouble with single character strings. > > Is this a bug, or am I misunderstanding sort with strings? > > ---------------------------------------------------------------------- > > 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
