Create 1D and 2D arrays

In this exercise let's briefly review how to create a 1D array, or a vector, before moving on to 2D arrays (matrices). A quick way to create a vector is to use the square bracket notation, like so:

my_vector = []

These square brackets contain the sequence of values that you wish to store in the vector.

The syntax to create a 2D array is very similar, again using square bracket notation. However, we also use the semicolon ; notation to denote a new row.

my_matrix = [1 2 ; 3 4]