For loops to take specific values only in MATLAB - matlab

Question

I have a MATLAB program which uses two for loops to iterate up to 5 times. However, I want MATLAB to use only (1 1), (2 2), (3 3) and so on.
Here is the program:
syms l
a = [0 1 0 0 1 0;1 1 1 0 1 1;1 0 0 0 1 1;1 1 1 0 0 1;0 1 1 0 1 1];
n = [2 1;1 1;1 1;1 1;2 1];
for l = 1:5
for i = 1:5
j = n(l,1);
if a(i,j) == 0
a(i,j:end) = circshift(a(i,j:end),[n(l,2) n(l,2)]);
for j = n(l,1):n(l,1)+n(l,2)
a(i,n(l,1)) = 1;
end
else
a(i,j:end) = circshift(a(i,j:end),[n(l,2) n(l,2)]);
for j = n(l,1):n(l,1)+n(l,2)
a(i,n(l,1)) = 0;
end
end
break;
end
break;
end
I want MATLAB my program to work like this:
first l = 1 and i = 1;
second l = 2 and i = 2;
third l = 3 and i = 3;
fourth l = 4 and i = 4;
and so on...

Answer 1

#RodyOldenhuis basically answered your question, and I'm flattered he hasn't made this into an actual answer!
Simply take your code and change the inner for loop index so that it matches the outer loop index. In other words, do this:
syms l %// Why are you doing this?
a = [0 1 0 0 1 0;1 1 1 0 1 1;1 0 0 0 1 1;1 1 1 0 0 1;0 1 1 0 1 1];
n = [2 1;1 1;1 1;1 1;2 1];
for l = 1:5
i = l; %// Change here - Remove second for loop
%// ... [rest of your code here]
%// Get rid of the break in this loop
end
%// Removed break here too
end