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

363 Solutions

161 Solvers

Last Solution submitted on May 07, 2026

Last 200 Solutions

Problem Comments

Solution Comments

Show comments

Problem Recent Solvers161

akihisa yorozu Aaron Coville Casey Stein Hanyang

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!