Union Jack Matrix - MATLAB Cody - MATLAB Central

Problem 43801. Union Jack Matrix

Difficulty:
(152)
Rate

Create a matrix of odd dimensions that has ones on both diagonals and dividing the matrix into 4 quadrants, resembling a square union jack flag. For example, if n=11:

1  0  0  0  0  1  0  0  0  0  1
0  1  0  0  0  1  0  0  0  1  0
0  0  1  0  0  1  0  0  1  0  0
0  0  0  1  0  1  0  1  0  0  0
0  0  0  0  1  1  1  0  0  0  0
1  1  1  1  1  1  1  1  1  1  1
0  0  0  0  1  1  1  0  0  0  0
0  0  0  1  0  1  0  1  0  0  0
0  0  1  0  0  1  0  0  1  0  0
0  1  0  0  0  1  0  0  0  1  0
1  0  0  0  0  1  0  0  0  0  1
Solve

Solution Stats

66.22% Correct | 33.78% Incorrect
Last Solution submitted on Jun 22, 2025

Problem Comments

Solution Comments

Show comments
Why should you share code?
In a discussion on LInkedin about my recent blog post, Do these...
Mike Croucher in General
1
3
View Post

Problem Recent Solvers85

Suggested Problems

More from this Author11

Problem Tags

ones matrix union jack

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!