path.java

import java.io.BufferedWriter;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.lang.reflect.ParameterizedType;
import java.nio.charset.Charset;
import java.nio.file.DirectoryStream;
import java.nio.file.FileSystems;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.nio.file.Files;

public class HashCodeMain {
  public static void main(String[] args) throws IOException {

    Path results_folder = FileSystems.getDefault().getPath(System.getProperty("user.dir"), "results");
    Files.createDirectories(results_folder);
    Path inputs_folder = FileSystems.getDefault().getPath(System.getProperty("user.dir"), "src", "Resources");
    DirectoryStream<Path> inputs_stream = Files.newDirectoryStream(inputs_folder, filter);
    for (Path path : inputs_stream) {
        Path out_path = results_folder.resolve(path.getFileName().toString().replace(".in", ".out"));
        optimize_file(path, out_path);
    }
}