create diagonal matrix zeros

I'm trying to create a matrix like this:

I'm able to create one matrix with a=diag(1:10)

and another with b=(1:10)+(0:9)'

But I don't know how to combine them together to get A.

Thanks for your help

Answer 1

[the cyclist]

a = diag(1:10);
a(1,:) = 1:10;
a(:,1) = 1:10;

Answer 2

[Ben Mai]

Thank you :)