Understanding array memory layout in NumPy - Interactive Quiz & Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a 2D NumPy array filled with zeros.

NumPy

import numpy as np
arr = np.[1]((3, 4))

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Azeros

Bones

Cempty

Dfull

Attempts:

3 left

💡 Hint

Common Mistakes

Using np.ones instead of np.zeros

Using np.empty which creates uninitialized values

The np.zeros function creates an array filled with zeros.

2fill in blank

medium

Complete the code to check if the array is stored in C-contiguous order.

NumPy

is_c_contiguous = arr.[1]

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Aflags.contiguous

Bflags.c_order

Cflags.c_contiguous

Dflags.f_contiguous

Attempts:

3 left

💡 Hint

Common Mistakes

Using f_contiguous which checks Fortran order

Using flags.contiguous which does not exist

The flags.c_contiguous attribute tells if the array is stored in C-contiguous order (row-major).

3fill in blank

hard

Fix the error in the code to reshape the array without copying data.

NumPy

reshaped = arr.[1]((6, 2), order='K')

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Areshape

Bflatten

Cresize

Dravel

Attempts:

3 left

💡 Hint

Common Mistakes

Using resize which changes the array in-place and may copy

Using flatten which always returns a copy

The reshape method can reshape an array without copying data if possible, especially with order='K'.

4fill in blank

hard

Fill both blanks to create a Fortran-contiguous array and check its memory layout.

NumPy

arr_f = np.array([[1, 2], [3, 4]], order=[1])
is_fortran = arr_f.flags.[2]

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A'F'

B'C'

Cf_contiguous

Dc_contiguous

Attempts:

3 left

💡 Hint

Common Mistakes

Using order='C' instead of 'F'

Checking c_contiguous flag for Fortran layout

Setting order='F' creates a Fortran-contiguous array. The flags.f_contiguous attribute checks this layout.

5fill in blank

hard

Fill all three blanks to create a C-contiguous array, reshape it, and verify the layout.

NumPy

arr_c = np.array([[5, 6], [7, 8]], order=[1])
reshaped_c = arr_c.[2]((4, 1))
is_c = reshaped_c.flags.[3]

Drag options to blanks, or click blank then click option'

A'F'

Breshape

Cc_contiguous

D'C'

Attempts:

3 left

💡 Hint

Common Mistakes

Using order='F' instead of 'C'

Using resize instead of reshape

Checking f_contiguous flag for C layout

Creating with order='C' makes a C-contiguous array. Using reshape changes shape without copying. The flags.c_contiguous confirms C-contiguity.