How to compare the same array?

Question

Hello,
The question not how to compare arrays.
I have a method that gives results of an array type int.
for(......){
int [] arrayFunc(int [] input)
return arrayOut;
}I want to compare those arrayOut arrays. I need to find a way to save the first output and then compare it with the newest output. Where do I have to put the temp array to temporary save the array? What should happen if I want to keep track of the results and get comparisons of first, second, third output?
Thanks

Answer 1

Still not 100% sure but I try and help. What you need to do is have two references. After you have generated a result compare it to the last result. After the comparison you need to assign the current result to the last result and then go around the loop again to generate a new current result. Below is some code that uses plain ints but I hope it illustrates what I am trying to explain.
import java.util.Scanner;
class ComparingNumbers {
  public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    int current;
    System.out.print("Number: ");
    int last = scanner.nextInt();
    scanner.nextLine();
    for(int index = 0; index < 10; index++) {
      System.out.print("Number: ");
      current = scanner.nextInt();
      scanner.nextLine();
      System.out.println("Difference is " + Math.abs(current - last));
      last = current;
}