How can I compute the sum and average of odd numbers by using the loop method ?

Question

shyam 2014-2-14

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https://ww2.mathworks.cn/matlabcentral/answers/116099-how-can-i-compute-the-sum-and-average-of-odd-numbers-by-using-the-loop-method

评论： shyam 2014-2-14

For example, if I have a vector A. A=[23 44 2 -4 -19 15 1 -70 78] then how can I compute the sum and the average of all the odd numbers by using only the loop method and no built-in functions ?

With the built-in functions I get 20 and 5 for the sum and the average of the odd numbers, but how can I compute that same answer with the loop method.

thanks,

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Answer 1

David Sanchez 2014-2-14

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https://ww2.mathworks.cn/matlabcentral/answers/116099-how-can-i-compute-the-sum-and-average-of-odd-numbers-by-using-the-loop-method#answer_124335

在 MATLAB Online 中打开

A=[23 44 2 -4 -19 15 1 -70 78];
sum = 0;
N_odds = 0;
for k=1:numel(A)
    if mod(A(k),2)
        sum=sum+A(k);
        N_odds = N_odds + 1;
    end
end
my_average = sum/N_odds;