Exercise_5/Task_4

import java.util.ArrayList;
import java.util.Scanner;

public class Task_4 {

    private static final Scanner in = new Scanner(System.in);

    public static void main(String[] args) {

        ArrayList<Integer> numbers = new ArrayList<Integer>();
        boolean exit = false;
        while (!exit) {
            System.out.println("1. Enter new number\n2. Exit");
            int input = in.nextInt();
            if (input == 1) {
                System.out.printf("Number : ");
                numbers.add(in.nextInt());
            } else if (input == 2) {
                exit = true;
            } else {
                System.out.println("Enter a proper answer.");
            }
        }

        int min = 999*999*999;
        int max = -1;
        double total = 0;
        for (int element: numbers) {
            if (element < min) {
                min = element;
            }
            if (element > max) {
                max = element;
            }
            total += element;
        }
        double average = total / numbers.size();
        System.out.printf("Min : %d%nMax : %d%nAverage : %.2f", min, max, average);
    }
}