package dancinggooglers;

import java.io.File;
import java.util.Scanner;

public class DanceScoreCalculator {


    public static void main(String[] args) {
        if(args.length <= 0 || args[0] == null) {
            System.out.println("You must enter a file to read");
            System.out.println("Usage: blah <filename>");
            System.exit(0);
        }

        File argFile = new File(args[0]);
        try {
            Scanner googleSpeakScanner = new Scanner(argFile);
            String firstLine = googleSpeakScanner.nextLine();
            Integer linesToScan = new Integer(firstLine);
            for(int i = 1; i <= linesToScan; i++) {
                String googleDancerLine = googleSpeakScanner.nextLine();
                DanceScoreCase danceCase = new DanceScoreCase(googleDancerLine);
                System.out.println(String.format("Case #%d: %d", i, danceCase.maxDancersThatCouldPass()));
            }
        }
        catch (Exception e) {
            e.printStackTrace();
        }
    }
}

package fixjava;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;

public class IOUtils {

	public static void writeLinesToFile(List<String> lineList, File outputFile) {
		try {
			PrintWriter writer = new PrintWriter(outputFile);
			for (String line : lineList)
				writer.println(line);
			writer.close();
		} catch (FileNotFoundException e) {
			throw new RuntimeException(e);
		}
	}

	public static void writeLinesToFile(List<String> lineList, String outputFilename) {
		writeLinesToFile(lineList, new File(outputFilename));
	}

	// ---------------------------------------------------------------------------------------------------------

	public static ArrayList<String> readLinesFromFile(File inputFile) {
		ArrayList<String> lines = new ArrayList<>();
		for (String line : new FileLineIterator(inputFile))
			lines.add(line);
		return lines;
	}

	public static ArrayList<String> readLinesFromFile(String inputFilename) {
		return readLinesFromFile(new File(inputFilename));
	}

	// ---------------------------------------------------------------------------------------------------------

	public static String readFileAsString(File inputFile) {
		int len = (int) inputFile.length() + 1;
		StringBuilder buf = new StringBuilder(len);
		for (String line : new FileLineIterator(inputFile)) {
			buf.append(line);
			buf.append('\n');
		}
		return buf.toString();
	}

	public static String readFileAsString(String inputFilename) {
		return readFileAsString(new File(inputFilename));
	}
}
