// Lösningar till tentamen, del B 2018-03-03

// Uppgift 1
import java.io.*;
import java.util.*;

class ObsProgram {
  public static void main(String[] arg) throws IOException {
    List<Observation> l = new  ArrayList<>();
    Scanner fil = new Scanner(new File("obs.txt"));
    while (fil.hasNext()) {
      Observation obs = new Observation();
      obs.nr  = fil.nextInt();
      obs.tid.tim = fil.nextInt();
      obs.tid.min = fil.nextInt();
      obs.temp = fil.nextDouble();
      obs.vindhast = fil.nextDouble();
      obs.vindrikt = fil.nextInt();
      l.add(obs);
    }
    Collections.sort(l);
    for (Observation ob : l)
      System.out.println(ob.nr + "  " + ob.tid + "  " + ob.temp);
    Collections.sort(l,new JfrObs());
     for (Observation ob : l)
      System.out.println(ob.nr + "  " + ob.tid + "  " + ob.temp);
  }
}

class JfrObs implements Comparator<Observation> { 
  public int compare(Observation o1, Observation o2) {
    if (o1.nr < o2.nr)
      return -1;
    else if (o1.nr == o2.nr)
      return o1.tid.compareTo(o2.tid);   // i andra hand efter tid
    else 
      return 1;
  }
}


 // Uppgift 2
     import java.util.*;
     
     interface Function {
       public double apply(double x);
       
       public static List<Double> MakeList(List<Double> a, Function f) {
         List<Double>  b = new ArrayList<>();
         for (Double d: a)
           b.add(f.apply(d));
         return b;
       }
       
     }
     
     class Square implements Function {
       public double apply(double x) {
         return x*x;
       }
     }
     
     class Root implements Function {
       public double apply(double x) {
         return Math.sqrt(x);
       }
     }
	 
       public static void main(String[] arg) {
         List<Double> l = new ArrayList<>();
         Scanner s = new Scanner(System.in);
         while (s.hasNext())
           l.add(s.nextDouble());
         List<Double> kv = Function.MakeList(l, new Square());
         List<Double> ro = Function.MakeList(l, new Root());
	   }
	 }
 
	 
// Uppgift 3
  import java.io.*;

   public class HistogramProg extends JFrame implements ActionListener {
     JMenuItem[] mi = {new JMenuItem("Show"), new JMenuItem("Hide"), new JMenuItem("Exit")};
     Histogram h = new Histogram();

     public HistogramProg() {
       JMenuBar mb = new JMenuBar();
       setJMenuBar(mb);
       JMenu amen = new JMenu("Action");
       mb.add(amen);
       for (JMenuItem it : mi) {
         amen.add(it);
         it.addActionListener(this);
       }
       add(h);
       setSize(500, 300);
       setVisible(true);
       setDefaultCloseOperation(EXIT_ON_CLOSE);
     }

     private void clear() {
       setTitle(null);
       remove(h);
       h = new Histogram();
       add(h);
       repaint();
     } 

     public void actionPerformed(ActionEvent e) {
       if (e.getSource() == mi[0]) {  // Show
         clear();
         String s = JOptionPane.showInputDialog("File name? ");
         if (s == null)      // Stängningsrutan
           return;
         Scanner sc = null;
         try {
           sc = new Scanner(new File(s));
         }
         catch (FileNotFoundException ex) {
           JOptionPane.showMessageDialog(null, "File not found");
           return;
         }
         setTitle(s);
         while (sc.hasNextDouble()) 
           h.addValue(sc.nextDouble());
       }
       else if (e.getSource() == mi[1])    // Hide
         clear();
       else if (e.getSource() == mi[2])    // Exit
         System.exit(0);
     }