Double entries
Hey,
I've got a "get rid of double entries" method, that just doesn't do what is expected from it...
Can anyone give a reason to why this doesn't work (and additionally, tell me how to fix it)
private ArrayList <Positie> verwijderDubbel(ArrayList <Positie> oorsp){
for (int i = 0; i < oorsp.size(); i++){
for (int j = 0; j < oorsp.size(); j++){
if ( i!=j && oorsp.get(i).equals(oorsp.get(j)) )
oorsp.remove(i);
}
}
return oorsp;
}
Thanks,
Smetje
[946 byte] By [
smetjea] at [2007-11-27 7:27:20]
I skimmed the link you've given, seems usefull indeed, but here's what I made it. (wich, as you could guess, does not quite work)
public ArrayList <Positie> geefAlleBewegingen(){//geefAlleBewegingen ==> giveAllePossibleMoves
Set <Positie> bewegingen = new HashSet <Positie> ();
/*
* Positie ==> Position, consists of a char and an int, like A4, or G7
*/
char letter = pos.toString().charAt(0);
int cijfer = Integer.parseInt(""+pos.toString().charAt(1));
int a= 0;
while ( (cijfer+a) <= 8){
int b= 0;
while ( (int) (letter+b) <= (int) 'H' ){
Positie mog = new Positie( (cijfer+a) , (char) (letter+b) );
if ( controleerBeweging(mog) )//controleerBeweging ==> checkmovement
bewegingen.add(mog);
b++;
}
int c = 0;
while ( (int) (letter-c) >= (int) 'A' ){
Positie mog = new Positie( (cijfer+a) , (char) (letter-c) );
if ( controleerBeweging(mog) )
bewegingen.add(mog);
c++;
}
a++;
}
int d = 0;
while ( (cijfer-d) > 0 ){
int e= 0;
while ( (int) (letter+e) <= (int) 'H' ){
Positie mog = new Positie( (cijfer-d) , (char) (letter+e) );
if ( controleerBeweging(mog) )
bewegingen.add(mog);
e++;
}
int f= 0;
while ( (int) (letter-f) >= (int) 'A' ){
Positie mog = new Positie( (cijfer-d) , (char) (letter-f) );
if ( controleerBeweging(mog) )
bewegingen.add(mog);
f++;
}
d++;
}
return toArrayList(bewegingen);
}
private ArrayList <Positie> toArrayList(Set <Positie> a){
ArrayList <Positie> al = new ArrayList <Positie> ();
for (Positie x: a)
al.add(x);
return al;
}
what should I do now?
Smetje
