edu.princeton.cs.algs4.Cat Maven / Gradle / Ivy
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/******************************************************************************
* Compilation: javac Cat.java
* Execution: java Cat input0.txt input1.txt ... output.txt
* Dependencies: In.java Out.java
* Data files: https://algs4.cs.princeton.edu/11model/in1.txt
* https://algs4.cs.princeton.edu/11model/in2.txt
*
* Reads in text files specified as the first command-line
* arguments, concatenates them, and writes the result to
* filename specified as the last command-line arguments.
*
* % more in1.txt
* This is
*
* % more in2.txt
* a tiny
* test.
*
* % java Cat in1.txt in2.txt out.txt
*
* % more out.txt
* This is
* a tiny
* test.
*
******************************************************************************/
package edu.princeton.cs.algs4;
/**
* The {@code Cat} class provides a client for concatenating the results
* of several text files.
*
* For additional documentation, see Section 1.1 of
* Algorithms, 4th Edition by Robert Sedgewick and Kevin Wayne.
*
* @author Robert Sedgewick
* @author Kevin Wayne
*/
public class Cat {
// this class should not be instantiated
private Cat() { }
/**
* Reads in a sequence of text files specified as the first command-line
* arguments, concatenates them, and writes the results to the file
* specified as the last command-line argument.
*
* @param args the command-line arguments
*/
public static void main(String[] args) {
Out out = new Out(args[args.length - 1]);
for (int i = 0; i < args.length - 1; i++) {
In in = new In(args[i]);
String s = in.readAll();
out.println(s);
in.close();
}
out.close();
}
}
/******************************************************************************
* Copyright 2002-2018, Robert Sedgewick and Kevin Wayne.
*
* This file is part of algs4.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.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.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.jar. If not, see http://www.gnu.org/licenses.
******************************************************************************/