The NES function determines whether elements of one dynamic array are equal to the elements of another dynamic array.
Each element of array1 is compared with the corresponding element of array2. If the two elements are equal, a 0 is returned in the corresponding element of a new dynamic array. If the two elements are not equal, a 1 is returned. If an element of one dynamic array has no corresponding element in the other dynamic array, a 1 is returned. If either of a corresponding pair of elements is null, null is returned for that element.