// Kyle Thayer, CSE
// This program creates two histograms of the midterm scores
// The first is using *'s printed to the console
// The second is a drawing using the DrawingPanel
import java.io.*;
import java.awt.*;
import java.util.*;

public class MidtermHistogram{
    public static final int MAX_SCORE = 101;  // max possible score

    public static void main(String[] args) throws FileNotFoundException {
        // create a scanner on the input file
        Scanner input = new Scanner(new File("midterm2.txt"));
        
        // create an array of size MAX_SCORE + 1
        // this will have indices from 0 - 101, one for each possible score
        int[] scoreCount = new int[MAX_SCORE + 1];
        
        // loop over the file pulling off each score
        while(input.hasNext()){
           int score = input.nextInt();
           // increment the score counter
           // eg. if this score was 72, we add one to the counter scoreCount[72]
           scoreCount[score]++;
        }
        
        // loop over the score counts, printing the row for it
        for(int i = 0; i < scoreCount.length; i++){
           // only print lines for scores at least one person recieved
           if(scoreCount[i] > 0){
              System.out.print("score " + i + ": ");
              // print out scoreCount[i] stars
              // eg, if 3 people recieved 72's, then scoreCount[72] will be 3
              for(int j = 0; j < scoreCount[i]; j++){
                 System.out.print("*");
              }
              System.out.println();
           }
        }
        
        //draw a histogram on a DrawingPanel
        draw(scoreCount);

    }

    // Uses a DrawingPanel to draw the histogram
    public static void draw(int[] count) {
        DrawingPanel p = new DrawingPanel(count.length * 6 + 12, 500);
        Graphics g = p.getGraphics();
        g.setColor(Color.BLUE);
        for (int i = 0; i < count.length; i++) {
            g.drawLine(i * 6 + 6, 475, i * 6 + 6, 475 - 40 * count[i]);
        }
    }
}