What is the matter with this nested looped?

The below is my code, but it can product the same result as the above.

n = input('Enter a number: ');

A = zeros(n);

for x = n:1

for y = 1:n

A(n-(n-x),n-(n-y)) = 1;

end

end

[Atsushi Ueno]

    for x = n:1

if n is natural number, this iterator x makes no action because n > 1.

if you would like to make such a iterator x, you should write,

    for x = n:-1:1

[Atsushi Ueno]

A(n-(n-x),n-(n-y)) = 1;

n-(n-x) is same as x, and n-(n-y) is same as y. What is your intention?

[Atsushi Ueno]

To debug your code, how about removing semi-colon to display the result of A for each iteration?

A(n-(n-x),n-(n-y)) = 1

Answer 1

[Scott MacKenzie]

Most likely the problem is with this line

    for x=n:1

if n > 1, the loop does not execute. Did you mean

    for x=1:n