w3resource

Python: Join two given list of lists of same length, element wise

Python List: Exercise - 154 with Solution

Write a Python program to join two given list of lists of the same length, element wise.

Sample Solution:

Python Code:

# Define a function called elementswise_join that takes two lists, 'l1' and 'l2', as input.
def elementswise_join(l1, l2):
    # Use a list comprehension to element-wise join the elements of 'l1' and 'l2' using the 'zip' function.
    result = [x + y for x, y in zip(l1, l2)]
    
    # Return the result, which is the element-wise joined list.
    return result

# Create two lists, 'nums1' and 'nums2', containing sublists of varying lengths.
nums1 = [[10, 20], [30, 40], [50, 60], [30, 20, 80]]
nums2 = [[61], [12, 14, 15], [12, 13, 19, 20], [12]]

# Print a message indicating the original lists.
print("Original lists:")
print(nums1)
print(nums2)

# Print a message indicating that the two lists are being element-wise joined, and call the 'elementswise_join' function.
print("\nJoin the said two lists element-wise:")
print(elementswise_join(nums1, nums2))

# Create two lists, 'list1' and 'list2', containing sublists of varying lengths.
list1 = [['a', 'b'], ['b', 'c', 'd'], ['e', 'f']]
list2 = [['p', 'q'], ['p', 's', 't'], ['u', 'v', 'w']]

# Print a message indicating the original lists.
print("\nOriginal lists:")
print(list1)
print(list2)

# Print a message indicating that the two lists are being element-wise joined, and call the 'elementswise_join' function.
print("\nJoin the said two lists element-wise:")
print(elementswise_join(list1, list2)) 

Sample Output:

Original lists:
[[10, 20], [30, 40], [50, 60], [30, 20, 80]]
[[61], [12, 14, 15], [12, 13, 19, 20], [12]]

Join the said two lists element wise:
[[10, 20, 61], [30, 40, 12, 14, 15], [50, 60, 12, 13, 19, 20], [30, 20, 80, 12]]

Original lists:
[['a', 'b'], ['b', 'c', 'd'], ['e', 'f']]
[['p', 'q'], ['p', 's', 't'], ['u', 'v', 'w']]

Join the said two lists element wise:
[['a', 'b', 'p', 'q'], ['b', 'c', 'd', 'p', 's', 't'], ['e', 'f', 'u', 'v', 'w']]

Flowchart:

Flowchart: Join two given list of lists of same length, element wise.

Python Code Editor:

Previous: Write a Python program to check if a given element occurs at least n times in a list.
Next: Write a Python program to add two given lists of different lengths, start from left.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Become a Patron!

Follow us on Facebook and Twitter for latest update.

It will be nice if you may share this link in any developer community or anywhere else, from where other developers may find this content. Thanks.

https://198.211.115.131/python-exercises/list/python-data-type-list-exercise-154.php