All the posible combination of two matrices

I have two matrix

A=[1]

and

B=[2 3 4]

find the all possible combination of these tow matrices is

the output

C=[1 2; 1 3; 1 4; 1 2 3; 1 2 4; 1 3 4; 1 2 3 4]

how to find it

Answer 1

[Andrei Bobrov]

C = [];
for j1 = 1:numel(B)
    a = nchoosek(B,j1);
    C = [C;num2cell([repmat(A,size(a,1),1),a],2)];
end

[Andrei Bobrov]

I am corrected.

[Jothi]

I got the results it's working properly

[Jothi]

How to store this in xls file.

Answer 2

[Walter Roberson]

You cannot create a numeric matrix with a variable number of elements in each row.

[Jothi]

then how to get that result sir.

[Walter Roberson]

You cannot get the result you asked for. Andrei's answer does not give you the result you asked for: it gives you a cell array, but you asked for a numeric array.

[Jothi]

yes sir I did not get the numeric array. but cell array is okay for my problem. but how to store these answers (cell array) in xls file.

[Walter Roberson]

xlswrite()