question: public ZipfianGenerator ( long min , long max , double _zipfianconstant , double _zetan ) { items = max - min + 1 ; base = min ; zipfianconstant = _zipfianconstant ; theta = zipfianconstant ; zeta2theta = zeta ( 2 , theta ) ; alpha = 1.0 / ( 1.0 - theta ) ; zetan = _zetan ; countforzeta = items ; eta = ( 1 - Math . pow ( 2.0 / items , 1 - theta ) ) / ( 1 - zeta2theta / zetan ) ; nextInt ( ) ; }
target:  Create a zipfian generator for items between min and max (inclusive) for the specified zipfian constant, using the precomputed value of zeta.