You have to think MATLAB.
Your code is messy and hard to read.
i_max=[3;2;4]; <== column vector of size 1x3
n=size(i_max,1); <== you can use length instead of size
i=zeros(n); <=== i is 3x3 matrix of zeros
j=1;
for i(2)=0:1:i_max(1) if you would like to update the i matrix, do it in the loop. This statement is illegal
A(:,j)=i <== you can't assign matrix to vector
j=j+1
end
I'd suggest to set your requirements of the code. if you would like to use array of indexes, you can do it like that:
i=(1:10)*2
idx=[1,3,6]
i(idx)
ans =
2 6 12
example for the for loop:
for n = 1:40
r(n) = rank(magic(n));
end
