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Aminet 37
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Aminet 37 (2000)(Schatztruhe)[!][Jun 2000].iso
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sofa.lha
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sofa
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smalleiffel
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hanoi
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hanoi.e
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2000-03-25
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-- This file is part of SmallEiffel The GNU Eiffel Compiler.
-- Copyright (C) 1994-98 LORIA - UHP - CRIN - INRIA - FRANCE
-- Dominique COLNET and Suzanne COLLIN - colnet@loria.fr
-- http://www.loria.fr/SmallEiffel
-- SmallEiffel is free software; you can redistribute it and/or modify it
-- under the terms of the GNU General Public License as published by the Free
-- Software Foundation; either version 2, or (at your option) any later
-- version. SmallEiffel is distributed in the hope that it will be useful,but
-- WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-- for more details. You should have received a copy of the GNU General
-- Public License along with SmallEiffel; see the file COPYING. If not,
-- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-- Boston, MA 02111-1307, USA.
--
class HANOI
--
-- The classic Tower of Hanoi game.
--
-- Compile with :
-- compile -o hanoi hanoi -boost
-- Run with :
-- hanoi
--
inherit
ANY redefine out_in_tagged_out_memory
end;
creation make
feature {NONE}
nb: INTEGER;
t1, t2, t3 : TOWER;
feature
make is
do
io.put_string("Type the number of discus, please : ");
io.flush;
io.read_integer;
nb := io.last_integer;
!!t1.full(nb);
!!t2.empty(nb);
!!t3.empty(nb);
io.put_string("Situation at the beginning : %N");
move(nb,t1,t2,t3);
io.put_string("Situation at the end : %N");
print_on(io);
end;
move(how_many: INTEGER; source, intermediate, destination: TOWER) is
local
discus: INTEGER;
do
if (how_many > 0) then
move(how_many-1,source,destination,intermediate);
print_on(io);
discus := source.remove_discus;
destination.add_discus(discus);
move(how_many-1,intermediate,source,destination);
end;
end;
out_in_tagged_out_memory is
local
i: INTEGER;
do
tagged_out_memory.extend('%N');
from
i := nb;
until
i = 0
loop
tagged_out_memory.extend(' ');
t1.show_a_discus(i,tagged_out_memory);
tagged_out_memory.extend(' ');
t2.show_a_discus(i,tagged_out_memory);
tagged_out_memory.extend(' ');
t3.show_a_discus(i,tagged_out_memory);
tagged_out_memory.extend('%N');
i := i - 1;
end;
from
i := (((2 * (nb + 1)) + 1) * 3) - 2;
until
i = 0
loop
tagged_out_memory.extend('-');
i := i - 1;
end;
tagged_out_memory.extend('%N');
end;
end -- HANOI