How would we write the body for the insert(), deleteAt(), delete(), and the locate() methods? I've tried writing down some code but can't seem to get it to work.

* This class provides a growable array for primitive long values. * @author * @version 1.0 1/16/2020 */ class BigIntArrayList { //fields private long[] list; private int count; * Constructor. Initializes the underlying array to 10 elements. */ BigIntArrayList() { list = new long[10]; count = 0; Inserts the given long value at the given index. The index is assumed to be a value between 0 and count. Existing elements are moved up as needed to make room for the new value. * @param index the index where the new value should be stored * @param value the value to be stored */ public void insert(int index, long value) { count = list.length; count++; for (int i = count - 1; i > index; i--) { list[i] = list[i - 1]; list[index] = value; * Deletes the value at the given index. The index is * assumed to be a value between 0 and count - 1. Existing elements are moved down as needed to keep all values contiguous, without any empty spaces in the array. * @param index the index of the element that should be removed * @return the value that was removed */ public long deleteAt (int index) { long[] newList = new long[list.length - 1]; for (int i = 0; i