Diagonal Pattern by writing loops?

how can I print these diagonal patterns by writing a loop in a 21x21 array?

Answer 1

[Star Strider]

Try this:

M = diag([ones(1,9) 0 ones(1,9)]);
M = M + fliplr(M);
M(ceil(size(M,1)/2), ceil(size(M,1)/2)) = 1;

figure
imagesc(M)
axis('image')
colormap([0 0 0; 1 1 1])

No loops necessary.

Experiment to get different results.

[Ekin Yilmaz]

Very grateful, thank you. You're my hero.

[Star Strider]

My pleasure!

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