Question

I need this in Java:

/**
* Class for storing the last ten integers added.
*
* Your class should be named LastTen.
*
* Your class should implement two public methods as described below:
* 1. void add(int newValue):
* add a new integer to the values that we are rememebring
* 2. int[] getLastTen():
* return the last ten values that were added using add, in any order.
* If fewer than ten values were added, you should return zeros in their
* place.
*
* Examples:
* 1. add(1), add(2)
* getLastTen: [1, 2, 0, 0, 0, ... ]
* 2. add(0), add(1), add(2), ... add(10)
* getLastTen: [1, 2, 3, 4, ... 10]
*
* Your class should also provide a constructor that takes no arguments.
*/

Answer 1

class LastTen {

    private int[] arr;
    private int index;

    public LastTen() {
        arr = new int[10];
        index = 0;
    }

    public void add(int n) {
        if(index < 10) {
            arr[index++] = n;
        } else {
            for(int i = 0; i < 9; ++i) {
                arr[i] = arr[i+1];
            }
            arr[9] = n;
        }
    }

    public int[] getLastTen() {
        return arr;
    }
}