Mode calculation

[Chris Montgomery]

I can't seem to find a library that calculates mode.
the jakarta commons math is close, but the array must be in memory and no more than 100 rows.

I have an array that ranges between 20,000 and 90,000.

I found a C# version and converted it to java, but it's wrong (could be me, my conversion...). (excel's mode and PHP's mode of the same data proved that).

 
 
Arrays.sort(stats);
                  double val_mode=stats[0],help_val_mode=stats[0];
                  int old_counter=0,new_counter=0;
                  int j=0;
                  for (;j<=stats.length-1;j++)
                           if (stats[j]==help_val_mode) new_counter++;
                           else if (new_counter>old_counter) 
                           {
                                   old_counter=new_counter;
                                   new_counter=1;
                                   help_val_mode=stats[j];
                                   val_mode=stats[j-1];
                           }
                           else if (new_counter==old_counter) 
                           {
                                   val_mode=0;
                                   help_val_mode=stats[j];
                                   new_counter=1;
                           }
                           else 
                           {
                                   help_val_mode=stats[j];
                                   new_counter=1;
                           }
                  if (new_counter>old_counter) val_mode=stats[j-1]; 
                  else if (new_counter==old_counter) val_mode=0;
                  return val_mode;
 

Ideally, I'd like a library to do it, but if someone has code they can provide that would be great too.

Thanks!