Column Vector Containing the Row Sums of the Elements of A
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Sophie Culhane
il 23 Set 2020
Commentato: Ameer Hamza
il 23 Set 2020
My task is to write a MATLAB function that takes as input a nonemty 2-dimensional array A and returns a column vector containing the row sums of the elements of A. I have a program written out, however it calculates and sum of all elements and puts them in a column vector. Please help me figure out how to only add the elements of one row and continue with the next. Here is what I have so far:
function RowSum = ex(A)
%
%
[NRows, NCols] = size(A);
RowSum = zeros(NRows, 1);
for row = 1: NRows
for col = 1: NCols
RowSum = RowSum + A(row, col);
end
end
Thank you in advance for the help.
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Ameer Hamza
il 23 Set 2020
Modificato: Ameer Hamza
il 23 Set 2020
Why not use the builtin function
M = rand(10, 5);
M_sum = sum(M, 2)
As for your current code, the correct is
function RowSum = ex(A)
%
%
[NRows, NCols] = size(A);
RowSum = zeros(NRows, 1);
for row = 1: NRows
for col = 1: NCols
RowSum(row) = RowSum(row) + A(row, col);
end
end
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