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This is an automatic "excavation" of a thematic subset of
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top - metrics - downloadIndex: B T
Length: 4168 (0x1048)
Types: TextFile
Names: »B«
└─⟦149519bd4⟧ Bits:30000546 8mm tape, Rational 1000, !projects 93-07-13
└─⟦124ff5788⟧ »DATA«
└─⟦this⟧
└─⟦a7d1ea751⟧ Bits:30000550 8mm tape, Rational 1000, !users!projects 94_04_11
└─⟦129cab021⟧ »DATA«
└─⟦this⟧
└─⟦f64eaa120⟧ Bits:30000752 8mm tape, Rational 1000, !projects 93 02 16
└─⟦6f12a12be⟧ »DATA«
└─⟦this⟧
└─⟦2f6cfab89⟧ Bits:30000547 8mm tape, Rational 1000, !projects 94-01-04
└─⟦d65440be7⟧ »DATA«
└─⟦this⟧
with Expertsystem, Chrono;
use Expertsystem;
package body Reines is
package Behavior is new Classbehavior (Object, "QUEEN ", 3000);
procedure Enroute (Nbrereine : Natural) is
Init : Reines.Object;
begin
Rangcourant := 0;
Rangfinal := Ttaille (Nbrereine);
Behavior.Clear;
Init.Echiquier := (others => 0);
Init.Niveau := 0;
Init.Ouvert := False;
Behavior.Allocate (Init);
end Enroute;
function Niveaunonouvert (Niveau : Ttaille) return Collection.Object is
function Niveauetpasouvert
(Uneref : Expertsystem.Reference) return Boolean is
begin
return (Behavior.Get (Uneref).Niveau = Niveau and
Behavior.Get (Uneref).Ouvert = False);
end Niveauetpasouvert;
function Lesniveaux is new Collection.Restrict (Niveauetpasouvert);
begin
return Lesniveaux (Behavior.Instances);
end Niveaunonouvert;
function Niveaufinal (Niveau : Ttaille) return Collection.Object is
function Niveaufin (Uneref : Expertsystem.Reference) return Boolean is
begin
return (Behavior.Get (Uneref).Niveau = Niveau);
end Niveaufin;
function Cesniveaux is new Collection.Restrict (Niveaufin);
begin
return (Cesniveaux (Behavior.Instances));
end Niveaufinal;
procedure Dessine (N : Natural) is
begin
for I in 1 .. N - 1 loop
Put ("| ");
end loop;
Put ("| o ");
for I in N + 1 .. Rangfinal loop
Put ("| ");
end loop;
Put_Line ("|");
end Dessine;
procedure Affiche (Uneref : Expertsystem.Reference) is
begin
Put_Line (" ");
Put_Line ("Voici une solution : ");
for I in 1 .. 4 * Rangfinal + 1 loop
Put ("=");
end loop;
Put_Line (" ");
for I in 1 .. Rangfinal loop
Dessine (Reines.Behavior.Get (Uneref).Echiquier (I));
for I in 1 .. 4 * Rangfinal + 1 loop
Put ("=");
end loop;
Put_Line (" ");
end loop;
end Affiche;
procedure Lesafficher is new Collection.Forall (Affiche);
procedure Affichersol (Sol : Collection.Object) is
begin
Put ("Nombre de solutions :");
Put (Integer (Collection.Cardinality (Sol)));
Put_Line (" ");
Lesafficher (Sol);
end Affichersol;
procedure Ajoutsituation (Sit : Expertsystem.Reference;
Rang : Ttaille;
Colonne : Ttaille) is
Situation : Reines.Object;
begin
Situation := Behavior.Get (Sit);
Situation.Echiquier (Rang) := Colonne;
Situation.Niveau := Situation.Niveau + 1;
Situation.Ouvert := False;
Behavior.Allocate (Situation);
end Ajoutsituation;
procedure Fermesituation (Sit : Expertsystem.Reference) is
Situation : Reines.Object;
begin
Situation := Behavior.Get (Sit);
Situation.Ouvert := True;
Behavior.Set (Sit, Situation);
Behavior.Dispose (Sit); -- suppression des situations inutiles
end Fermesituation;
function Situationcorrecte
(Sit : Expertsystem.Reference; -- echiquier courant
Rang : Ttaille; -- nouvelle ligne
Colonne : Ttaille) -- position reine dans
return Boolean is -- la ligne
-- rend VRAI si une reine peut etre mise en (rang,colonne) sans risque du aux
-- autres reines etant deja sur l'echiquier sur les lignes 1..rang-1
Situation : Reines.Object;
begin
Situation := Behavior.Get (Sit);
for Ligne in 1 .. Rang - 1 loop
if Situation.Echiquier (Ligne) = Colonne -- meme colonne
or
Rang - Ligne =
abs (Colonne -
Situation.Echiquier (Ligne)) -- meme diagonale a gauche
then
return (False);
end if;
end loop;
return True;
end Situationcorrecte;
end Reines;