% ==========================================================================
% $Id: list_intersection.pl,v 1.1 2014/01/21 04:50:36 jlang Exp $
% CSI2120 example Code for lecture 5
% ==========================================================================
% (C)opyright:
%
%   Jochen Lang
%   EECS, University of Ottawa
%   800 King Edward Ave.
%   Ottawa, On., K1N 6N5
%   Canada. 
%   http://www.eecs.uottawa.ca/~jlang
% 
% Creator: jlang (Jochen Lang) based on Clocksin & Mellish
% Email:   jlang@eecs.uottawa.ca
% ==========================================================================
% $Log: list_intersection.pl,v $
% Revision 1.1  2014/01/21 04:50:36  jlang
% Added further list processing for lecture 5.
%
% ==========================================================================
intersectList( [], _, [] ).
intersectList( [ X | Xs ], Ys, Zs ) :-
			\+member( X, Ys), 
			intersectList( Xs, Ys, Zs ).
intersectList( [ X | Xs ], Ys, [ X | Zs ] ) :-
			member( X, Ys ),
			intersectList( Xs, Ys, Zs ).