Скачать или смотреть Cuboid Coordinates with List Comprehensions – One-Liner Version

This video presents a true one-liner solution for generating all possible 3D coordinates for a cuboid using list comprehensions. We read four integers from standard input – the dimensions x, y, z and a number n. The one-liner creates a list of coordinates
[i,j,k] where the sum
i+j+k is not equal to n, and prints the list in lexicographic increasing order.

Topic Explanation:

One-Liner List Comprehension:
By combining nested loops and an inline conditional, we create an elegant one-liner that replaces multiple lines of code. This is a great way to learn about writing concise and expressive Python code.

Argument Unpacking in range():
The comprehension iterates over three ranges generated from the input values, effectively producing every possible coordinate.

Conditional Filtering in One-Liner:
The if (i+j+k) != n condition is integrated into the comprehension, ensuring only valid coordinates are included in the final list.

Efficient Code:
This one-liner demonstrates how powerful and succinct Python can be when you combine its features, making it ideal for tasks like this and for competitive programming challenges.

Copy and paste the code below into your Jupyter Notebook to try out the true one-liner solution!

Code for True One-Liner Version (Copy-Paste in Jupyter Notebook):

print([[i, j, k] for i in range(int(input().strip()) + 1) for j in range(int(input().strip()) + 1) for k in range(int(input().strip()) + 1) if (i + j + k) != int(input().strip())])