Two dimensional arrays

We already know arrays, let's imagine how can you save an array inside another array. It is something like this:

You see the difference?

Here is a clear example and definition of the multi-dimensional arrays from the page processing:

An array keeps track of multiple pieces of information in linear order, a one-dimensional list. However, the data associated with certain systems (a digital image, a board game, etc.) lives in two dimensions. To visualize this data, we need a multi-dimensional data structure, that is, a multi-dimensional array. A two-dimensional array is really nothing more than an array of arrays (a three-dimensional array is an array of arrays of arrays). Think of your dinner. You could have a one-dimensional list of everything you eat: (lettuce, tomatoes, salad dressing, steak, mashed potatoes, string beans, cake, ice cream, coffee) Or you could have a two-dimensional list of three courses, each containing three things you eat: (lettuce, tomatoes, salad dressing) and (steak, mashed potatoes, string beans) and (cake, ice cream, coffee) In the case of an array, our old-fashioned one-dimensional array looks like this:

int[] myArray = {0,1,2,3};

And a two-dimensional array looks like this:

int[][] myArray = { {0,1,2,3}, {3,2,1,0}, {3,5,6,1}, {3,8,3,4} };

Reference: Processing.org

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