package edu.princeton.cs.algs4.ch35;
import edu.princeton.cs.algs4.SET;
import edu.princeton.cs.introcs.*;
/*************************************************************************
* Compilation: javac WhiteFilter.java
* Execution: java WhiteFilter whitelist.txt < input.txt
* Dependencies: SET In.java StdIn.java StdOut.java
* Data files: http://algs4.cs.princeton.edu/35applications/tinyTale.txt
* http://algs4.cs.princeton.edu/35applications/list.txt
*
* Read in a whitelist of words from a file. Then read in a list of
* words from standard input and print out all those words that
* are in the first file.
*
* % more tinyTale.txt
* it was the best of times it was the worst of times
* it was the age of wisdom it was the age of foolishness
* it was the epoch of belief it was the epoch of incredulity
* it was the season of light it was the season of darkness
* it was the spring of hope it was the winter of despair
*
* % more list.txt
* was it the of
*
* % java WhiteFilter list.txt < tinyTale.txt
* it was the of it was the of
* it was the of it was the of
* it was the of it was the of
* it was the of it was the of
* it was the of it was the of
*
*************************************************************************/
public class WhiteFilter {
public static void main(String[] args) {
SET<String> set = new SET<String>();
// read in strings and add to set
In in = new In(args[0]);
while (!in.isEmpty()) {
String word = in.readString();
set.add(word);
}
// read in string from standard input, printing out all exceptions
while (!StdIn.isEmpty()) {
String word = StdIn.readString();
if (set.contains(word))
StdOut.println(word);
}
}
}
/*************************************************************************
* 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.
*************************************************************************/