// CSE 142, Summer 2008 (Helene Martin)
// Tallies section scores for different sections.
// Reports attendance, scores and grades for each student.

// This version processes multiple sections, has good method decomposition, 
// and directs output to a file.

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

public class Sections2 {
	public static void main(String[] args) throws FileNotFoundException {
		Scanner input = new Scanner(new File("sectionScores.txt"));
		PrintStream out = new PrintStream(new File("output.txt"));

		int sect = 1;
		
		while(input.hasNextLine()) {
			String section = input.nextLine();
			
			int[] attendance = attendance(section);			
			int[] scores = calcScores(attendance);
			double[] grades = calcGrades(scores);
						
			printResults(out, sect, attendance, scores, grades);
			
			// For debugging, we can print to the console like this:
			//printResults(System.out, sect, attendance, scores, grades);
			sect++;
		}
	}
	
	// Calculates and returns attendance from section String
	public static int[] attendance(String section) {
		int[] attendance = new int[5];
		for(int i = 0; i < section.length(); i++) {
			if(section.charAt(i) == '1') {
				attendance[i % 5]++;
			}
		}
		// We want to return each array to main rather than chaining methods (attendance calls calcScores and calcScores calls calcGrades)
		// This gives main better structure and increases flexibility:
		// methods can be called separately.
		return attendance;
	}
	
	// Calculates and returns scores from attendance
	public static int[] calcScores(int[] attendance) {
		int[] scores = new int[5];
		for(int i = 0; i < attendance.length; i++) {
			scores[i] = Math.min(attendance[i] * 3, 20);
		}
		return scores;
	}
	
	// Calculates and returns grades from scores
	public static double[] calcGrades(int[] scores) {
		double[] grades = new double[5];
		for(int i = 0; i < scores.length; i++) {
			grades[i] = scores[i] / 20.0 * 100;
		}
		return grades;
	}
	
	// Prints attendance, scores and grades to the specified PrintStream.
	public static void printResults(PrintStream out, int sect, int[] attendance, int[] scores, double[] grades) {
		out.println("Section # " + sect);
		out.println("Sections attended: " + Arrays.toString(attendance));
		out.println("Student scores: " + Arrays.toString(scores));
		out.println("Student grades: " + Arrays.toString(grades));	
		out.println();
	}
}