/*
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 */
package javaapplication1;

import java.io.*;
import java.util.ArrayList;



/**
 *
 * @author grahg
 */
public class JavaApplication1 {
    public static void array_to_csv() throws IOException
    {


        // PRVNI
        int velX = 10;
        int velY = 10;
        double [][]matice = new double[velX][velY];
        String csv = velX + "," + velY + ",\n";

        for (int i=0; i<velX; ++i) {
            for (int j=0; j<velY; ++j) {
                matice[i][j]= (double)Math.random() + (double)Math.random() * 1000;
                csv = csv + matice[i][j] + ",";
            }
            csv = csv + "\n";
        }

        File file = new File("/home/grahg/a.csv");
	if (!file.exists())
            file.createNewFile();

        else if (file.canRead()) {
            FileWriter fw = new FileWriter(file.getAbsoluteFile());
            BufferedWriter bw = new BufferedWriter(fw);
            bw.write(csv);
            bw.close();
        }
    }

    public static void print_csv() throws IOException
    {

        // DRUHY
        BufferedReader br = new BufferedReader(new FileReader("/home/grahg/a.csv"));
        String line;

        line = br.readLine();
        String[] parts = line.split(",");
        int x = Integer.parseInt(parts[0]);
        int y = Integer.parseInt(parts[1]);

        double [][]matice2 = new double[x][y];

        for (int i=0; i<y; ++i) {
            if ( (line = br.readLine() ) == null) break;
            String[] values = line.split(",");

             for (int j=0; j<y; ++j) {
                 matice2[i][j]= Float.parseFloat(values[j]);
                 System.out.print(matice2[i][j] + ",");
             }
             System.out.println();
        }

        br.close();
    }
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws IOException {
        array_to_csv();
        //print_csv();
    }
}