/* Copyright 2005 Daniel Cer (daniel.cer@cs.colorado.edu)

This work is licensed under the Creative Commons Attribution-NonCommercial-
ShareAlike License. To view a copy of this license, visit 
http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to 
Creative Commons, 543 Howard Street, 5th Floor, San Francisco, California, 
94105, USA.
*/

public class Randu { private int state = 1;

  // next = 65539*prev % 2**31 
  public int next() { return state=((state<<16)+(state<<1)+state)&0x7FFFFFFF; }

  public static void main(String[] args) {
    if (args.length != 1) { System.err.println(
      "Usage:\n\tjava Randu (number of random values to generate*)\n"+
      "\n* '0' - unlimited"); System.exit(-1); }

   int maxIter = Integer.parseInt(args[0]); Randu randu = new Randu();

   if (maxIter<0) { System.err.println(
     "Error: parameter must be non-negative"); System.exit(-1); }

   for (int i=0; (i<maxIter)||maxIter==0; i++) System.out.println(randu.next());
  }
}