Can I write a function that can create nested loops

Question

arash rad 2022-12-7

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1872827-can-i-write-a-function-that-can-create-nested-loops

评论： Jan 2023-2-8

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

4 个评论
显示 2更早的评论隐藏 2更早的评论

Dyuman Joshi 2022-12-7

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

Ganesh Gudipati 2023-2-8

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

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Answer 1

DGM 2022-12-7

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1872827-can-i-write-a-function-that-can-create-nested-loops#answer_1166645

移动：Jan 2023-2-8

在 MATLAB Online 中打开

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