Using a loop for repeating steps

Question

Anonymous Matrix 2017-2-21

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/326055-using-a-loop-for-repeating-steps

编辑： Jan 2017-2-21

I need some help with a loop. i have codes here:

RandomArray= randi([-100 100],20,5); % step 1
RandomArray=sort(RandomArray(:)); % step 2
RandomArray = reshape(RandomArray,5,20).'; 
y=mean(RandomArray,2); % step 3
[c,index] = min(abs(y-0)); % determines which row is closest to 0
RowNumber= index;

I have to repeat these steps 1000 times then plot RowNumber in a histogram. I know I can use a FOR loop but i'm a bit lost on how to assign the codes. Can someone help? please and thank you.

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Akira Agata 2017-2-21

在 MATLAB Online 中打开

Is this what you want to do?

N = 1000;
RowNumber = zeros(N,1);
 for kk=1:N
    RandomArray= randi([-100 100],20,5); % step 1
    RandomArray=sort(RandomArray(:)); % step 2
    RandomArray = reshape(RandomArray,5,20).';
    y=mean(RandomArray,2); % step 3
    [c,index] = min(abs(y-0));
    RowNumber(kk) = index;
 end
 % Plot histogram
 histogram(RowNumber);

Anonymous Matrix 2017-2-21

Yes! i was mainly lost on where to put the kk. thanks!

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Answer 1

Akira Agata 2017-2-21

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/326055-using-a-loop-for-repeating-steps#answer_255661

在 MATLAB Online 中打开

Just in case, let me copy&paste my comment to the answer section.

N = 1000;
RowNumber = zeros(N,1);
 for kk=1:N
    RandomArray= randi([-100 100],20,5); % step 1
    RandomArray=sort(RandomArray(:)); % step 2
    RandomArray = reshape(RandomArray,5,20).';
    y=mean(RandomArray,2); % step 3
    [c,index] = min(abs(y-0));
    RowNumber(kk) = index;
 end
 % Plot histogram
 histogram(RowNumber);