Hey @John Go, you can achieve it by using 'reshape' function. The idea is to reshape your array into a matrix where each column contains the elements you want to sum, and then use the sum function to compute the sums along the columns
Below I have attched the code for the same:
% Define the array
A = 11:40;
% Reshape the array into a 3-row matrix
% Each column will have 3 elements from A
reshapedA = reshape(A, 3, []);
% Sum along each column
B = sum(reshapedA, 1);
% Display the result
disp('B =');
disp(B);
Hope it helps.
