Easiest way to make matrix have 3 sets of values

Easiest way to simplify the code below?

matrix = zeros(8,1)
for i = 1:3
    matrix(i,1) = 1;  
end
matrix(4,1) = 2
for i = 5:8
    matrix(i,1) = 3
end

Ouput

    1
    1
    1
    2
    3
    3
    3
    3

[Adam]

matrix = [ ones(3,1); 2; 3 * ones(4,1) ];

It's a bit meaningless though without knowing if that is all you want to do or if this is just a simpler example of a more complicated case you want to solve. If it is the former then arguably

matrix = [1; 1; 1; 2; 3; 3; 3; 3];

is the most easily readable code.

[Guillaume]

Indeed there are many many ways to create such a simple matrix, so more details are needed on the background behind the question.

[arthurk]

I apologise, however the answers provided all help in my case. Thank you

Answer 1

[Guillaume]

matrix = repelem((1:3)', [3, 2, 4])

is one way

[arthurk]

This works well for my case, Thank you.