How do I fill an array with 1's in particular rows and columns that I want

array = zeros(100, 100)

Now, I need to make a square filled with 1's(on the boundary as well as inside), from row 20 to 80 and column 20 to 80? how should I do this ?

Answer 1

[Walter Roberson]

array(20:80, 20:80) = 1;