Awesome bitvector array stuff

gistfile1.java

public class newBitvektor
{

   private int top=0;
   private int[] data;
   private int[] from;
   public int[] to;
   
   public newBitvektor(int i){
       this.data = new int[i];
       this.from = new int[i];
       this.to   = new int[i];
   }
   public void set(int i, int value)
   {
       data[i]=value;
       from[i]=top;
       to[top]=i;
       top++;
   }
   
   public int get(int i) {
       if ((from[i]<top) && (to[from[i]]==i)) return data[i];
       return 0;
   }
   
   public void delete(int i) {
       data[i] = 0;
   }
   
}