.java

/**
* We figured out part of the answer to our question. 
* So now we'd just like to know if we're on the right track.
*/

public void insert(int index, E data)
{
    ensureCapacity(indexCounter + 1);

    for (int i = elementData.length; i > index; i--)
    {

        int currentIdx = (i + elementData.length - 1) % elementData.length;
        int nextIdx    = (i + 1 + elementData.length - 1) % elementData.length;

        elementData[nextIdx] = elementData[currentIdx];

        System.out.println(elementData[currentIdx] + " moved to index: " + nextIdx);

        modCounter++;
    }

    indexCounter++;

    setElement(index, data);
}