fork download 
  1. xyz( [ ], 0, [ ] ) .
  2.  
  3. xyz( [N|Rest], S, [N|RestResult] ) :-
  4. S1 is S - N,
  5. xyz(Rest, S1, RestResult ) .
  6.  
  7. xyz( [N|Rest], S, RestResult ) :-
  8. xyz(Rest, S, RestResult ) .
  9.  
  10. ?_xyz([1,2,3,4,5],5,Result)
  11.  
Success #stdin #stdout 0.02s 6204KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
https://ideone.com/4hm6a
language:
Prolog (swi 7.6.4)
created:
14 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!