// Source code example for "A Practical Introduction
// to Data Structures and Algorithm Analysis"
// by Clifford A. Shaffer, Prentice Hall, 1998.
// Copyright 1998 by Clifford A. Shaffer

import java.io.*;

// A simple program to generate a large file of binary values.
public class Genfile {

static final int NumRec = 1024;

public static void main(String args[]) throws IOException {

  Assert.notFalse(args.length == 2,
    "Usage: Genfile <name> <size>\nSize is measured in blocks of 4096 bytes");
  int filesize = Integer.parseInt(args[1]);
  DataOutputStream file = new DataOutputStream(
      new BufferedOutputStream(new FileOutputStream(args[0])));

  int recs = 1024 * filesize - 1;

  for (int i=0; i<filesize; i++)
    for (int j=0; j<NumRec; j++) {
//       int val = DSutil.random(32003); // Random numbers
//       file.writeInt(val);
       file.writeInt(recs - (i*NumRec + j)); // Reverse sorted numbers
    }
  file.flush();
  file.close();
}

}