% ==========================================================================
% $Id: list_mirror.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_mirror.pl,v $
% Revision 1.1  2014/01/21 04:50:36  jlang
% Added further list processing for lecture 5.
%
% ==========================================================================
mirror([], []). % empty list is mirrored itself
mirror([X|L1], L2) :-    % Take X off the front
    mirror(L1,L3),       % Mirror the rest L1
    append(L3, [X], L2). % Put X at the back