import java.util.Arrays;

public class Lab1 {

    // instance variable to be populated by numbers that are divisible by seven
    private int [] divisibleBySeven;

    // BEGIN PART 1

    /**
     * Test if x is divisible by y
     * @param x integer 
     * @param y integer 
     * @return true if x is divisible by y, false otherwise
     */
    public boolean isDivisibleBy(int x, int y)
    {
        System.out.println("isDivisibleBy NOT IMPLEMENTED");
        return true;
    }


    /**
     * Populates the instance variable divisibleBySeven with all the numbers that are 
     * divisible by seven in the range of the numbers begin and end
     * @param begin first integer to start the test range, inclusive
     * @param end last integer in the test range, not inclusive, i.e. end-1
     * is the last integer to be tested.
     */
    public void divisorsInRange(int begin, int end)
    {
        System.out.println("testDivisors NOT IMPLEMENTED");

    }

    // END PART 1

    // BEGIN PART 2

    /**
     * Extract all positive integers from the array provided as input.  The length of
     * the returned array should have a length that equals the number of positive
     * elements in the input array.
     * @param intArray array of integers
     * @return array containing all of the positive integers from the input array
     */

    public int[] extractPositives(int[] intArray)
    {
        System.out.println("extractPositives NOT IMPLEMENTED");
        return new int[0];
    }

    // END PART 2

    // BEGIN PART 3

    /**
     * Read in data from a file; print out the data in the specified format - 
     * "Name: *name*, Age:*age*" 
     *
     * @param filename the file name containing the input data
     */
    public void readAndPrint(String fileName)
    {
        System.out.println("readAndPrint NOT IMPLEMENTED");
    }

    // END PART 3

    public static void main(String[] args)
    {
        Lab1 lab = new Lab1();

        System.out.println("Test part 1");
        System.out.println("10 is divisible by 3?  " + lab.isDivisibleBy(10, 3));
        System.out.println("24 is divisible by 3?  " + lab.isDivisibleBy(24, 3));
        lab.divisorsInRange(1, 99);
        System.out.println(Arrays.toString(lab.divisibleBySeven));

        System.out.println("Test part 2");
        //Create an array of values
        //System.out.println(Arrays.toString(lab.extractPositives(values)));

        System.out.println("Test part 3");
        //Use the first command line argument as the name of the file
        //lab.readAndPrint(args[0]);
    }

}