Commit 35a8877a authored by Vít Novotný's avatar Vít Novotný
Browse files

added missing prolog file for example 4.2_17

parent 149d835c
% nacteni:
/* ['4.2_17.pl']. */
% move(+Uzel, -NaslUzel, -Cena)
% Uzel - aktuln stav
% NaslUzel - nov stav
% Cena - cena pechodu
move(Tasks1*[_/F|Active1]*Fin1, Tasks2*Active2*Fin2, Cost) :-
del1(Task/D,Tasks1,Tasks2), \+ (member(T/_,Tasks2),before(T,Task)),
\+ (member(T1/F1,Active1),F<F1,before(T1,Task)),
Time is F+D, insert(Task/Time,Active1,Active2,Fin1,Fin2), Cost is Fin2-Fin1.
move(Tasks*[_/F|Active1]*Fin,Tasks*Active2*Fin,0) :- insertidle(F,Active1,Active2).
before(T1,T2) :- precedence(T1,T2).
before(T1,T2) :- precedence(T,T2),before(T1,T).
insert(S/A,[T/B|L ],[ S/A,T/B|L],F,F) :- A=<B,!.
insert(S/A,[T/B|L ],[ T/B|L1],F1,F2) :- insert(S/A,L,L1,F1,F2).
insert(S/A,[],[ S/A],_,A).
insertidle(A,[T/B|L ],[ idle /B,T/B|L]) :- A<B,!.
insertidle(A,[T/B|L ],[ T/B|L1]) :- insertidle(A,L,L1).
goal([]*_*_).
% del1
del1(A,[A|T],T).
del1(A,[H|T1],[H|T2]) :- del1(A,T1,T2).
% pocatecni uzel
start([t1/4, t2/2, t3/2, t4/20, t5/20, t6/11, t7/11]*[idle/0, idle/0, idle/0]*0).
% heuristika
h(Tasks * Processors * Fin, H) :-
totaltime(Tasks, Tottime),
sumnum(Processors, Ftime, N),
Finall is (Tottime + Ftime)/N,
(Finall > Fin, ! , H is Finall - Fin ; H = 0).
totaltime([], 0).
totaltime([_/D | Tasks], T) :-
totaltime(Tasks, T1), T is T1 + D.
sumnum([], 0, 0).
sumnum([_/T | Procs], FT, N) :-
sumnum(Procs, FT1, N1),
N is N1 + 1, FT is FT1 + T.
precedence( t1, t4). precedence( t1, t5). precedence( t2, t4). precedence( t2, t5).
precedence( t3, t5). precedence( t3, t6). precedence( t3, t7).
%
biggest(99).
writelist(L):-writelist(L,1).
writelist([E|L],I):-write(I),write(': '),write(E),nl,I1 is I+1,writelist(L,I1).
writelist([],_).
run:-
['4.1_9.pl'], nl,
write('Rozvrh prace procesoru, algoritmus A*'), nl, nl,
start(Start),
write('Pocatecni stav: '), write(Start), nl,
bestsearch(Start, Solution),
write('Nalezene reseni:'),nl,
reverse(Solution,RSolution),
writelist(RSolution).
:- run.
% vim: set ft=prolog:
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