Problem 42083. Ring Matrix

Given n (only odd), return output matrix a that has concentric rings of the numbers 1 through (n+1)/2 around the center point.

For n = 3,

a = [2 2 2;
     2 1 2;
     2 2 2;]

For n = 5,

a = [3 3 3 3 3;
     3 2 2 2 3;
     3 2 1 2 3;
     3 2 2 2 3;
     3 3 3 3 3;]

Solve

Last Solution submitted on Jan 11, 2020

Andrew Stamps on 22 Apr 2015

Looks like the test suite could use some work.

goc3 on 30 Sep 2016

This problem has been updated and corrected.

Peng Liu on 1 Oct 2016

Hi Grant, it is nice to see that your are now maintaining all Cody problems. Cheers!

concentric matrix odd ring