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Negative Indexing | Indexing and Slicing
NumPy in a Nutshell

Negative IndexingNegative Indexing

We discussed positive indexing, but there is also negative indexing. Negative indexing starts from the end, with index -1 referring to the last element, index -2 referring to the second-to-last element, and so on.

This example illustrates how to retrieve a value of 10 from a given two-dimensional array using negative indexing.

The first index determines the row we choose (-1 refers to the last row), while the second index corresponds to the element we select within that row (-1 is the last one). As a result, we obtain a value of 10. Run the code above to verify it.

Example

Task

You have the following array: [[-4, 3, 1], [2, 10, -4]]

  1. Access the value 10.

Let's give it a try. Use only negative indices.

Everything was clear?

Section 3. Chapter 5
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course content

Course Content

NumPy in a Nutshell

Negative IndexingNegative Indexing

We discussed positive indexing, but there is also negative indexing. Negative indexing starts from the end, with index -1 referring to the last element, index -2 referring to the second-to-last element, and so on.

This example illustrates how to retrieve a value of 10 from a given two-dimensional array using negative indexing.

The first index determines the row we choose (-1 refers to the last row), while the second index corresponds to the element we select within that row (-1 is the last one). As a result, we obtain a value of 10. Run the code above to verify it.

Example

Task

You have the following array: [[-4, 3, 1], [2, 10, -4]]

  1. Access the value 10.

Let's give it a try. Use only negative indices.

Everything was clear?

Section 3. Chapter 5
toggle bottom row
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