import java.util.Arrays;
import java.util.Scanner;

/**
 * Name:
 */
public class ArrayPractice
  {
public static void main(String[] args)
	{
		Scanner scanner = new Scanner(System.in);
		System.out.print("Enter the first number: ");
		int start = scanner.nextInt();
		int finish = start;
		while (finish <= start)
		{
			System.out.print("Enter the last number (must be after first number): ");
			finish = scanner.nextInt();
		}

		// initialize an array to contain the numbers 'start' through 'finish', inclusive
		int[] numbers = buildArray(start, finish);

		// print the message passed in, then all the numbers in the array
                System.out.printf(Arrays.toString(numbers));


		// print the sum and average of the numbers
		printSumAndAverage(numbers);

		// Bonus:
		// add 1 to all odd numbers
		addOneToOddNumbers(numbers);
                System.out.printf(Arrays.toString(numbers));
                reverse(numbers);
                System.out.println("");
                System.out.printf(Arrays.toString(numbers));

	}
    public static int[] buildArray(int start, int finish)
    {
    int lengte=(finish-start)+1;
    int array[]=new int[lengte];
    int teller=0;
    for (int i=start;i<finish+1;i++)
    {
    array[teller]=i;
    ++teller;
    }
    return array;
    }



    /**
     * Method that prints the SUM and the AVERAGE of the numbers in the array
     */
    public static void printSumAndAverage(int[] array)
    {
        int som=0;
        int gemiddelde=0;

        for(int i=0; i<array.length;i++)
        {
        som += array[i];
        }
     gemiddelde = som/array.length;

        System.out.printf("%nDe som is %s%nHet gemiddelde is %s%n",som,gemiddelde);
    }

	// Start with this main() method. Do not change it!

    public static void addOneToOddNumbers(int[]array)
    {
   for (int i=0; i<array.length;i++)
   {
   if(array[i]%2==0)
   {++array[i];}
   }

    }

    public static void reverse (int[]arr)
    {        int temp=0;
        int l = arr.length-1;
        for(int i=0;i<l/2;i++)
        {
            temp=arr[l];
            arr[l]=arr[i];
            arr[i]=temp;
            l--;
        }
    }
}