Given n (always odd), return output a that has concentric rings of the 1s and 0s around the center point. Examples:

 Input  n = 3
 Output a is [ 1 1 1 
               1 0 1
               1 1 1 ]
 Input  n = 5
 Output a is [    1     1     1     1     1
                  1     0     0     0     1
                  1     0     1     0     1
                  1     0     0     0     1
                  1     1     1     1     1]
Solve

Solution Stats

375 Solutions

165 Solvers

Last Solution submitted on Jul 22, 2026

Last 200 Solutions

Problem Comments

Solution Comments

Show comments

Problem Recent Solvers165

shinya matsumoto Lorenzo Colby Piyush

Suggested Problems

More from this Author16

Problem Tags

Community Treasure Hunt

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

Start Hunting!