### Question

Without initially knowing the dimensions of a 2-D Array, how could we get the last element?

### Answer

Assuming that the 2-D Array has the same number of elements for each row, such that it is an Array of size `M x N`

, we could do this using the `len()`

function. The `len()`

function works the same way for arrays as it does for lists in Python.

First, we can get the last row index like so.

`len(array) - 1`

And since each row has the same number of elements, we can get the index of the final column like so.

`len(array[0]) - 1`

Putting this together, selecting the last, or bottom-right most, element is done with

`array[len(array) - 1, len(array[0]) - 1]`