Swaping two columns randomly picked

2 次查看（过去 30 天）
Bartosz Bagrowski
Bartosz Bagrowski 2022-5-17
评论： Bartosz Bagrowski 2022-5-17
Ran in:
Hi guys,
I would like to swap two columns randomly picked in an array. I wrote such a code and I would be glad if you could help me to find the error:
it's an array q with dimensions 25x5. Later I would like to create two another function for inserting one randomly picked column after the second randomly picked column, I would be thankful if you could check and help me.
w=5
function qnew = Swap(q)
n = w;
i=randsample(n,2) %randomly picking two columns
i1=i(1);
i2=i(2);
qnew(:,i(1))=q(:,i(2));
qnew([i1(:,i(1)) i2(:,i(2))])=q([i2(:,i(2)) i1(:,i(1))]);
disp(qnew);
end
Function definitions in a script must appear at the end of the file.
Move all statements after the "Swap" function definition to before the first local function definition.

请先登录，再回答此问题。

采纳的回答

Torsten
Torsten 2022-5-17
编辑：Torsten 2022-5-17
A = rand(25,5);
i = randsample(5,2);
v = A(:,i(1));
A(:,i(1)) = A(:,i(2));
A(:,i(2)) = v;
or simply
A = rand(25,5);
i = randsample(5,2);
A(:,[i(1) i(2)]) = A(:,[i(2) i(1)]);
  1 个评论
Bartosz Bagrowski
Bartosz Bagrowski 2022-5-17
Thanks, it helped me a lot! And do you have maybe an idea how to insert one randomly picked column after another one randomly picked?

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Particle & Nuclear Physics 的更多信息

标签

产品


版本

R2021a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by