package edu.princeton.cs.algs4.ch11;
import edu.princeton.cs.introcs.*;
/*************************************************************************
* Compilation: javac RandomSeq.java
* Execution: java RandomSeq N lo hi
*
* Prints N numbers between lo and hi.
*
* % java RandomSeq 5 100.0 200.0
* 123.43
* 153.13
* 144.38
* 155.18
* 104.02
*
*************************************************************************/
/**
* The <tt>RandomSeq</tt> class is a client that prints out a pseudorandom
* sequence of real numbers in a given range.
* <p>
* For additional documentation, see <a href="http://algs4.cs.princeton.edu/11model">Section 1.1</a> of
* <i>Algorithms, 4th Edition</i> by Robert Sedgewick and Kevin Wayne.
*
* @author Robert Sedgewick
* @author Kevin Wayne
*/
public class RandomSeq {
// this class should not be instantiated
private RandomSeq() { }
/**
* Reads in two command-line arguments lo and hi and prints N uniformly
* random real numbers in [lo, hi) to standard output.
*/
public static void main(String[] args) {
// command-line arguments
int N = Integer.parseInt(args[0]);
// for backward compatibility with Intro to Programming in Java version of RandomSeq
if (args.length == 1) {
// generate and print N numbers between 0.0 and 1.0
for (int i = 0; i < N; i++) {
double x = StdRandom.uniform();
StdOut.println(x);
}
}
else if (args.length == 3) {
double lo = Double.parseDouble(args[1]);
double hi = Double.parseDouble(args[2]);
// generate and print N numbers between lo and hi
for (int i = 0; i < N; i++) {
double x = StdRandom.uniform(lo, hi);
StdOut.printf("%.2f\n", x);
}
}
else {
throw new IllegalArgumentException("Invalid number of arguments");
}
}
}
/*************************************************************************
* Copyright 2002-2012, Robert Sedgewick and Kevin Wayne.
*
* This file is part of algs4-package.jar, which accompanies the textbook
*
* Algorithms, 4th edition by Robert Sedgewick and Kevin Wayne,
* Addison-Wesley Professional, 2011, ISBN 0-321-57351-X.
* http://algs4.cs.princeton.edu
*
*
* algs4-package.jar is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* algs4-package.jar is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with algs4-package.jar. If not, see http://www.gnu.org/licenses.
*************************************************************************/