Alternative: (0:`+ @.[)/\.&.|. 0,2=/\4 4 4 2 2 1 3 3 3 3 0 1 2 0 1 0 0 1 2 3
Works alsof or scrambled: (0:`+ @.[)/\.&.|. 0,2=/\3 1 4 3 3 4 3 2 4 2 0 0 0 0 1 0 0 0 0 0 R.E. Boss > -----Oorspronkelijk bericht----- > Van: [EMAIL PROTECTED] [mailto:programming- > [EMAIL PROTECTED] Namens Mike Day > Verzonden: dinsdag 31 juli 2007 12:27 > Aan: Programming forum > CC: [EMAIL PROTECTED] > Onderwerp: Re: [Jprogramming] simple verb > > Damien > > This works, but only if the data is in the form > [x =: 3 2 1 4 # 4 2 1 3 > 4 4 4 2 2 1 3 3 3 3 > NB. and not scrambled, eg > y =: 3 1 4 3 3 4 3 2 4 2 > > ;@((<@[EMAIL PROTECTED])/.~)x NB. developed from your solution > 0 1 2 0 1 0 0 1 2 3 > > Is that what you need or do you also need a > result for scrambled x? > > Mike > > Damien wrote: > > Hi, > > > > I have a problem to create a verb. I think it is quite easy, but > > unfortunately I can not. > > > > My Input (example) : 4 4 4 2 2 1 3 3 3 3 > > As output, I would : 0 1 2 0 1 0 0 1 2 3 > > > > I would like a verb which counts the iteration number for same element. > > It is equivalent to : (i. 3) , ( i. 2) , ( i. 1) , ( i. 4) > > I can do the line above because of the parenthesis. > > I can only get the vector : 3 2 1 4 easily with #/.~, but that is all. > > Any idea ? > > > > Thank you. Bye. > > Damien. > > ---------------------------------------------------------------------- > > 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
