Search:

Right. So, take a copy and pencil and start doing the counting of array numbers. Write down the points how are you doing this and implement them as Java language. Same as all other operations.
Hope...

Do you know what this program does? And what else you want it to do?
Also, close your code in code tags, for the ease of understanding.

What did you try? Paste your code here you have done until now and we can help you. We don't do homework.