Can I write a function that can create nested loops

Hello everyone

I wrote a code that has multiple for loops inside each other in the code below but i try to write a function to create this multiple for loops but I don't know how to this can anyone help me

Thanks in advance

my for loops is :

qd(:,1) = Ftu(1).*qu(1);
for i = 2:7
    qd(:,i) = (1 - Ftu(i))*qd(:,i-1) + Ftu(i).*qu(i);
    if i == 7
        for i = 8:14
            qd(:,i) = (1 - Ftu(i))*qd(:,i-1) + Ftu(i).*qu(i);
            if i == 14
                for i = 15:21
                    qd(:,i) = (1 - Ftu(i))*qd(:,i-1) + Ftu(i).*qu(i);
                    if i == 21
                        for i = 22:28
                            qd(:,i) = (1 - Ftu(i))*qd(:,i-1) + Ftu(i).*qu(i);
                            if i == 28
                                for i = 29:35
                                    qd(:,i) = (1 - Ftu(i))*qd(:,i-1) + Ftu(i).*qu(i);
                                    if i == 35
                                        for i =36:42
                                            qd(:,i) = (1 - Ftu(i))*qd(:,i-1) + Ftu(i).*qu(i);
                                            if i == 42
                                                for i = 43:49
                                                    qd(:,i) = (1 - Ftu(i))*qd(:,i-1) + Ftu(i).*qu(i);

                                                end
                                            end
                                        end
                                    end

                                end
                            end

                        end
                    end

                end
            end
        end
    end
end

[Jonas]

is this a real example? why not write one for loop here with i=2:49? all loops do the same, or is that not correct?

[arash rad]

because each loop consists of flow of a specific cycle time

[Dyuman Joshi]

Which specific cycle time? The code doesn't reflect anything like that.

[Ganesh Gudipati]

You can try writing a recursive function with single for loop.

Answer 1

[DGM]

rng(123) % make sure inputs are repeatable
Ftu = rand(1,49);
qu = rand(1,49);

qd = zeros(1,49); % preallocate
qd(:,1) = Ftu(1).*qu(1);
for i = 2:7
    qd(:,i) = (1 - Ftu(i))*qd(:,i-1) + Ftu(i).*qu(i);
    if i == 7
        for i = 8:14
            qd(:,i) = (1 - Ftu(i))*qd(:,i-1) + Ftu(i).*qu(i);
            if i == 14
                for i = 15:21
                    qd(:,i) = (1 - Ftu(i))*qd(:,i-1) + Ftu(i).*qu(i);
                    if i == 21
                        for i = 22:28
                            qd(:,i) = (1 - Ftu(i))*qd(:,i-1) + Ftu(i).*qu(i);
                            if i == 28
                                for i = 29:35
                                    qd(:,i) = (1 - Ftu(i))*qd(:,i-1) + Ftu(i).*qu(i);
                                    if i == 35
                                        for i =36:42
                                            qd(:,i) = (1 - Ftu(i))*qd(:,i-1) + Ftu(i).*qu(i);
                                            if i == 42
                                                for i = 43:49
                                                    qd(:,i) = (1 - Ftu(i))*qd(:,i-1) + Ftu(i).*qu(i);
                                                end
                                            end
                                        end
                                    end
                                end
                            end
                        end
                    end
                end
            end
        end
    end
end

% the exact same thing
rng(123) % make sure inputs are repeatable
Ftu = rand(1,49);
qu = rand(1,49);

qd2 = zeros(1,49); % preallocate
qd2(:,1) = Ftu(1).*qu(1);
for i = 2:49
    qd2(:,i) = (1 - Ftu(i))*qd2(:,i-1) + Ftu(i).*qu(i);
end

immse(qd,qd2) % the results are identical

ans = 0

[Jan]

Wow. This looks cleaner :-)