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| package is.RechercheOperationel;
import java.awt.Frame;
import java.awt.GridLayout;
import java.awt.List;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;
public class Dikstra
{
double matrice[][]=
{ {0,6,1.0/0,2,1.0/0,1.0/0,8,1.0/0},
{1.0/0,0,1.0/0,1,1.0/0,1.0/0,2,1.0/0},
{1.0/0,4,0,1.0/0,1.0/0,1,1.0/0,1.0/0},
{1.0/0,1.0/0,1.0/0,0,1,1.0/0,1.0/0,1.0/0},
{1.0/0,2,8,1.0/0,0,9,1.0/0,1.0/0},
{1.0/0,1.0/0,1.0/0,1.0/0,1.0/0,0,1.0/0,2},
{1.0/0,1.0/0,3,1.0/0,1.0/0,1.0/0,0,7},
{1.0/0,1.0/0,1.0/0,1.0/0,1.0/0,1.0/0,1.0/0,0},
};
boolean d[]={false,false,false,false,false,false,false,false};
double t[]={0,6,1.0/0,2,1.0/0,1.0/0,8,1.0/0};
List liste=new List();
Frame fenetre=new Frame();
public Dikstra()
{
appliquerAlgo();
}
public Dikstra(double matrice[][])
{
fenetre.add(liste);
fenetre.setLayout(new GridLayout());
fenetre.setVisible(true);
fenetre.setBounds(200,200,600,600);
fenetre.addWindowListener(new WindowListener(){
@Override
public void windowActivated(WindowEvent e) {
// TODO Auto-generated method stub
}
@Override
public void windowClosed(WindowEvent e) {
// TODO Auto-generated method stub
}
@Override
public void windowClosing(WindowEvent e) {
// TODO Auto-generated method stub
fenetre.setVisible(false);
liste.removeAll();
}
@Override
public void windowDeactivated(WindowEvent e) {
// TODO Auto-generated method stub
}
@Override
public void windowDeiconified(WindowEvent e) {
// TODO Auto-generated method stub
}
@Override
public void windowIconified(WindowEvent e) {
// TODO Auto-generated method stub
}
@Override
public void windowOpened(WindowEvent e) {
// TODO Auto-generated method stub
}
});
this.matrice=matrice.clone();
this.t=matrice[0].clone();
appliquerAlgo();
}
public void appliquerAlgo()
{
int nb=matrice.length;
while(--nb>0)
{
int a=posMin();
if(a==-1)
{
System.out.println("Tout est dans D");
}else
{
modSuc(a);
}
afficherAc();
}
}
private void modSuc(int a)
{
for(int i=0;i<matrice[a].length;i++)
{
if(matrice[a][i]!=1.0/0)
{
if(t[i] > (t[a]+matrice[a][i]))
{
t[i]=t[a]+matrice[a][i];
}
}
}
}
private void afficherAc()
{
StringBuffer sb=new StringBuffer();
System.out.print("D = { ");
sb.append("D = { ");
for(int i=0;i<d.length;i++)
{
if(d[i])
{
System.out.print(" X"+(i+1)+" , ");
sb.append(" X"+(i+1)+" , ");
}
}
System.out.println(" }");
sb.append(" }");
liste.add(sb.toString());
sb.setLength(0);
for(int i=0;i<t.length;i++)
{
System.out.print(t[i]+" | ");
sb.append(t[i]+" | ");
}
liste.add(sb.toString());
liste.add("");
System.out.println();
System.out.println();
}
private int posMin()
{
double a=1.0/0;
int b=-1;
for(int i=0;i<t.length;i++)
{
if(t[i]<a && !d[i])
{
a=t[i];
b=i;
}
}
d[b]=true;
return b;
}
public void afficher()
{
for(int i=0;i<matrice.length;i++)
{
for(int j=0;j<matrice[i].length;j++)
{
System.out.print(matrice[i][j]+" ");
}
System.out.println();
}
}
public static void main(String[] args)
{
new Dikstra();
}
} |
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