/****************************************************************************** * Compilation: javac FileIndex.java * Execution: java FileIndex file1.txt file2.txt file3.txt ... * Dependencies: ST.java SET.java In.java StdIn.java StdOut.java * Data files: https://algs4.cs.princeton.edu/35applications/ex1.txt * https://algs4.cs.princeton.edu/35applications/ex2.txt * https://algs4.cs.princeton.edu/35applications/ex3.txt * https://algs4.cs.princeton.edu/35applications/ex4.txt * * % java FileIndex ex*.txt * age * ex3.txt * ex4.txt * best * ex1.txt * was * ex1.txt * ex2.txt * ex3.txt * ex4.txt * * % java FileIndex *.txt * * % java FileIndex *.java * ******************************************************************************/ import java.io.File; /** * The {@code FileIndex} class provides a client for indexing a set of files, * specified as command-line arguments. It takes queries from standard input * and prints each file that contains the given query. *
* For additional documentation, see Section 3.5 of
* Algorithms, 4th Edition by Robert Sedgewick and Kevin Wayne.
*
* @author Robert Sedgewick
* @author Kevin Wayne
*/
public class FileIndex {
// Do not instantiate.
private FileIndex() { }
public static void main(String[] args) {
// key = word, value = set of files containing that word
ST