yes, you can do this like you say by saving the best result and updating it at each iteration
i tried to update the pseudo code to give you the idea
function [] = mainfun()
iteration = 0;
old_out2 = 0;
c = 2; % column to check
while iteration < max_iteration
% increase the counter
iteration = iteration + 1;
% some parameter and their calculation
[] = subfun1();
[, out2] = subfun2();
if iteration == 1
% at the first iteration save the result
old_out2 = out2;
else
% for all other iterations, check if the new result is bigger
if sum( old_out2(:,c) ) < sum( out2(:,c) )
% if so break the loop
break
end
end
end
