Java-Programming/AufgabenBlatt6/src/Aufgabe6.java

import org.junit.Test;

import java.util.Scanner;

/**
 * Generic test class for implementing and testing reading in arrays of integers
 *                _ _   _               _
 * __      ___ __(_) |_| |_ ___ _ __   | |__  _   _
 * \ \ /\ / / '__| | __| __/ _ \ '_ \  | '_ \| | | |
 *  \ V  V /| |  | | |_| ||  __/ | | | | |_) | |_| |
 *   \_/\_/ |_|  |_|\__|\__\___|_| |_| |_.__/ \__, |
 *                                            |___/
 *  ____                  __     __               _
 * / ___|_   _____ _ __   \ \   / /__   __ _  ___| |
 * \___ \ \ / / _ \ '_ \   \ \ / / _ \ / _` |/ _ \ |
 *  ___) \ V /  __/ | | |   \ V / (_) | (_| |  __/ |
 * |____/ \_/ \___|_| |_|    \_/ \___/ \__, |\___|_|
 *                                     |___/
 * Licensed under the GPLv2 License, Version 2.0 (the "License");
 * Copyright (c) Sven Vogel
 */
public class Aufgabe6 {

    /**
     * Read 10 integers from System.in and print them to the screen when done
     * This method continues to request more input even when the input is not an integer.
     */
    private static void taskA() {
        try(var scanner = new Scanner(System.in)) {
            var array = new double[10];
            var counter = 0;

            while (true) {
                try {
                    if (counter > 9) {
                        for (var value : array) {
                            System.out.println(value);
                        }
                        break;
                    }

                    System.out.println("Enter a number: ");
                    array[counter++] =  scanner.nextDouble();

                } catch (Exception e) {
                    System.err.println("You did not enter a number");
                }
            }
        }
    }

    /**
     * Reads in an integer from System.in and creates an array of integers with the given size
     * Read 10 integers from System.in and print them to the screen when done
     * This method continues to request more input even when the input is not an integer.
     */
    private static void taskB() {
        try(var scanner = new Scanner(System.in)) {

            double[] array = null;
            var counter = 0;

            // read something in until we allocated an array
            while (array == null) {
                try {
                    array = new double[scanner.nextInt()];
                } catch (Exception e) {
                    System.err.println("You did not enter a valid number");
                }
            }

            // fill the array
            while (true) {
                try {
                    if (counter >= array.length - 1) {
                        for (var value : array) {
                            System.out.println(value);
                        }
                        break;
                    }

                    System.out.println("Enter a number: ");
                    array[counter++] =  scanner.nextDouble();

                } catch (Exception e) {
                    System.err.println("You did not enter a number");
                }
            }
        }
    }

    /**
     * Read 5 integers from System.in and print the median of them
     * This method continues to request more input even when the input is not an integer.
     */
    private static void taskC() {
        try(var scanner = new Scanner(System.in)) {
            var array = new double[5];
            var counter = 0;

            while (true) {
                try {
                    if (counter > 5) {
                        var sum = 0;
                        for (var value : array) {
                            sum += value;
                        }
                        System.out.println("median: " + (sum / 5.0));
                        break;
                    }

                    System.out.println("Enter a number: ");
                    array[counter++] =  scanner.nextDouble();

                } catch (Exception e) {
                    System.err.println("You did not enter a number");
                }
            }
        }
    }

    /**
     * Prints the content of two arrays as pairs to the screen
     */
    private static void taskD() {
        int x []= {9,8,7,6,5,4};
        int y []= {1,2,3,4,5,6};

        for (int i = 0; i < x.length; i++) {
            System.out.format("(%d, %d) ", x[i], y[i]);
        }

        System.out.println();
    }

    /**
     * Test various functions in this class
     */
    @Test
    public void test() {
        // taskA();
        // taskB();
        // taskC();
        // taskD();
    }
}