Printing positive numbers backwards

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David Tejcek 2019-7-2

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https://ww2.mathworks.cn/matlabcentral/answers/469895-printing-positive-numbers-backwards

编辑： Stephen23 2019-7-16

Hi all,

I was just wondering if anyone could help me out with some code to go through a matrix of numbers and find the positive numbers and print only them (remove the negative numbers) in a new array but also print them in reverse order,

Thanks a lot!

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Stephen23 2019-7-2

编辑：Stephen23 2019-7-2

Please show us what you have tried so far.

You would have made significant progress on this by doing the introductory tutorials:

https://www.mathworks.com/help/matlab/getting-started-with-matlab.html

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Answer 1

Rajani Mishra 2019-7-16

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Hi,

I understand that you want to extract positive numbers from matrix and store them in a new array and then traverse the new array in reverse order.

Refer this code:

[row,col] = size(mt) 
arr = []; 
for i = 1:row 
   for j = 1:col 
      if mt(i,j) > 0 
        arr(numel(arr) + 1) = mt(i,j); 
      end 
   end 
end 
for i = numel(arr):-1:1 
   disp(arr(i)); 
end 