question: protected void grow ( ) { if ( dists == EMPTY_DISTS ) { dists = new double [ INITIAL_SIZE ] ; ids = new int [ INITIAL_SIZE ] ; return ; } final int len = dists . length ; final int newlength = len + ( len > > 1 ) ; double [ ] odists = dists ; dists = new double [ newlength ] ; System . arraycopy ( odists , 0 , dists , 0 , odists . length ) ; int [ ] oids = ids ; ids = new int [ newlength ] ; System . arraycopy ( oids , 0 , ids , 0 , oids . length ) ; }
target:  Grow the data storage.