20171116 - 04 - classEx_05

    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);

        //init array
        int[] arr = new int[10];

        //populate array
        System.out.printf("Type in %d Integers: ", arr.length);
        for (int i=0; i<arr.length; i+=1) {
            arr[i] = s.nextInt();

        }

        //this is where the magic happens
        for (int i=0; i<arr.length; i+=1) {
            if (i%2==0) { arr[i] += 1; }
            if (i%3==0) { arr[i] -= 1; }
        }

        //print out modified array
        for (int n: arr) {
            System.out.printf("%d ", n);
        }

        s.close();
    }