Access 3-D Arrays

To access elements in three-dimensional (3-D) arrays, we can use comma-separated integers that represent the dimensions and the index of the element.

Example

Access the third element of the second array within the first array.

Example Explained

The expression arr[0, 1, 2] yields the value 6 for the following reasons:

The first number indicates the first dimension, which contains two arrays:

$$[[1,2,3],[4,5,6]]$$

and

$$[[7,8,9],[10,11,12]]$$

By selecting 0, we focus on the first array:

$$[[1,2,3],[4,5,6]]$$

The second number refers to the second dimension, which also consists of two arrays:

$$[1,2,3]$$

and

$$[4,5,6]$$

Choosing 1 leads us to the second array:

$$[4,5,6]$$

The third number corresponds to the third dimension, which contains three values:
4, 5, and 6.
By selecting 2, we arrive at the third value: 6.

Negative Indexing

Utilize negative indexing to access elements of an array from the end.

Example

Print the last element from the second dimension.