how to write all the for loop outputs in a single vector

Hello,

how can I put all the for loop output in a single vector?

For example, there is a question asks to write a function which returns every other elements of the vector passed in, it returns all the odd-numbered elements starting with the first.

input x = [1 2 3 4 5 6 7 8 9]
output y [1 3 5 7 9]

my code:

function y = everyOther(x)
L = length(x)
for i = 1:2:L
    y = x(i)
end
end

the output was 9 which was the last thing that has been executed. So how can I put all the executed values in a single vector.

I know that this problem can be solved in one line

y = x(1:2:end)

but I want to know how to solve it with for loop

Answer 1

[Bruno Luong]

function y = everyOther(x)
L = length(x);
i = 1:2:L;
y = zeros(size(i));
for j = 1:length(i)
    y(j) = x(i(j));
end
end

[Nourhan]

Thank you