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Exercise

Accessing subarrays

Let's access elements in NumPy arrays! Your task is to convert a square two-dimensional array square of size size to a list created by following a spiral pattern:

Traversing the matrix in spiral way

Rather than simply accessing certain slices, you will define a more general solution using a for loop (the solution should work for all the square two-dimensional arrays of odd size).

The module numpy is already imported as np.

You will need the reversed() function, which reverses an Iterable.

Instructions

100 XP
  • Convert each part marked by a red arrow to a list.
  • Convert each part marked by a green arrow to a list.
  • Convert each part marked by a blue arrow to a list.
  • Convert each part marked by a magenta arrow to a list.