So far all the arrays that you have been exposed to in this tutorial
have been one dimensional. The
dimension of an array means the number
of indices used to refer to one particular cell in the array. For a
one-dimensional array this can be thought of as a cell's position in a
list. For a
two-dimensional array there is also a nice way to think of
what the indices mean. You can think of the array as being a big
spreadsheet where all of the locations have a particular row and column
that uniquely identify them. By convention the first index is
considered to be the row and the second number is considered to be the
column number. As you can imagine, this structure also works well for
modeling a board, such as a tic-tac-toe board, on a computer.
In this topic we will also consider
multi-dimensional arrays and
show that you can choose to have arrays of any dimension that is useful
for your task.
