create all possible combinations of numbers

I have this code for creating a matrix that shows all possible combinations of numbers

function pathcomb=allcombinations(a, b, c, d)
sets = {a, b, c, d};
[a, b, c, d] = ndgrid(sets{:});
pathcomb = [a(:) b(:) c(:) d(:)];

Can I change it more flexible with the number of input variables?

I was trying to input 11 times of [0 1], but it is onerous to write [0 1] 11 times, and I also realized that I need to change the code when the number of inputs varies. Let us assume that I am working only with [0 1] matrix as an input. Then, how can I make it simple?

For example, if I have five [0 1] matrix, the outcome will [0 0 0 0 0;0 0 0 0 1;0 0 0 1 0;0 0 0 1 1,...,1 1 1 1 1]. It would be better if the function requires the number of [0 1], 5 in this example, as an input.

Answer 1

[Walter Roberson]

N = 5;
repmat([0 1], 1, N)

this would produce [0 1 0 1 0 1 0 1 0 1]

You might also in future be interested in repelem() repelem([0 1], 5) would produce [0 0 0 0 0 1 1 1 1 1]

[SANG GYU LEE]

Well.. it does not create all possible combinations. I need an output matrix of [0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 1 1 0 0 1 0 0 0 0 1 0 1 0 0 1 1 1 .... 1 1 1 1 1] in case the input is 5

[Walter Roberson]

I misread your question, sorry.

function pathcomb = allcombinationsN(a, N)
  [t1{1:N}] = ndgrid(a);
  t2 = cellfun(@(M) M(:), t1, 'Uniform', 0);
  pathcomb = horzcat(t2{:});