Matrix

Instructions

Given a string representing a matrix of numbers, return the rows and columns of that matrix.

So given a string with embedded newlines like:

9 8 7
5 3 2
6 6 7

representing this matrix:

    1  2  3
  |---------
1 | 9  8  7
2 | 5  3  2
3 | 6  6  7

your code should be able to spit out:

• A list of the rows, reading each row left-to-right while moving top-to-bottom across the rows,
• A list of the columns, reading each column top-to-bottom while moving from left-to-right.

The rows for our example matrix:

• 9, 8, 7
• 5, 3, 2
• 6, 6, 7

And its columns:

• 9, 5, 6
• 8, 3, 6
• 7, 2, 7

How this exercise is structured on the Python track

The tests for this exercise expect you to create a Matrix [class][classes] (see also classes). This is different from using a Matrix object from a third-party library such as Numpy, which is not supported. Don't worry, it's not as complicated as you think! For more starting points and details on classes and data structures, take a look at the resources below:

• A First Look at Classes from the Python 3 documentation.
• How to Define a Class in Python from the Real Python website.
• Data Structures in Python from the Python 3 documentation.

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Source

Exercise by the JumpstartLab team for students at The Turing School of Software and Design.