/****************************************************************************** * Compilation: javac LookupCSV.java * Execution: java LookupCSV file.csv keyField valField * Dependencies: ST.java In.java StdIn.java StdOut.java * Data files: https://algs4.cs.princeton.edu/35applications/DJIA.csv * https://algs4.cs.princeton.edu/35applications/UPC.csv * https://algs4.cs.princeton.edu/35applications/amino.csv * https://algs4.cs.princeton.edu/35applications/elements.csv * https://algs4.cs.princeton.edu/35applications/ip.csv * https://algs4.cs.princeton.edu/35applications/morse.csv * * Reads in a set of key-value pairs from a two-column CSV file * specified on the command line; then, reads in keys from standard * input and prints out corresponding values. * * % java LookupCSV amino.csv 0 3 % java LookupCSV ip.csv 0 1 * TTA www.google.com * Leucine 216.239.41.99 * ABC * Not found % java LookupCSV ip.csv 1 0 * TCT 216.239.41.99 * Serine www.google.com * * % java LookupCSV amino.csv 3 0 % java LookupCSV DJIA.csv 0 1 * Glycine 29-Oct-29 * GGG 252.38 * 20-Oct-87 * 1738.74 * * ******************************************************************************/ package edu.princeton.cs.algs4; /** * The {@code LookupCSV} class provides a data-driven client for reading in a * key-value pairs from a file; then, printing the values corresponding to the * keys found on standard input. Both keys and values are strings. * The fields to serve as the key and value are taken as command-line arguments. *
* 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 LookupCSV {
// Do not instantiate.
private LookupCSV() { }
public static void main(String[] args) {
int keyField = Integer.parseInt(args[1]);
int valField = Integer.parseInt(args[2]);
// symbol table
ST