package pl.lba.flights;

import java.util.Random;

public class Main {

    public static final int ARRAY_SIZE = 20;


    public static void main(String[] args) {
        final Random random = new Random();

        int[] grades = new int[ARRAY_SIZE];
        for (int i = 0; i < ARRAY_SIZE; i++) {
            grades[i] = random.nextInt(6) + 1;
        }

        double sum = 0;

        for (int grade : grades) {
            System.out.println("Uczeń otrzymał " + grade + ".");
            sum = sum + grade;
        }


        final double average = sum / ARRAY_SIZE;

        System.out.println("Średnia ocen uczniów w klasie wyniosła " + average + ".");

    }
}