prolog/problems/sets/intersect_3/common.py


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# coding=utf-8

id = 129
number = 36
visible = True
facts = None

solution = '''\
memb129(X, [X|_]).
memb129(X, [_|T]) :-
  memb129(X, T).

intersect([], _, []).
intersect([H|T], S2, [H|I]) :-
  memb129(H, S2), !,
  intersect(T, S2, I).
intersect([_|T], S2, I):-
  intersect(T, S2, I).
'''