# how to generate and cover all the possible arrays using two enties

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R@SH on 30 Sep 2021
Commented: R@SH on 1 Oct 2021
Hi Dear All,
I have an array of 1*4, in which each array can be of two strings 'H' or 'C'. to elaborate on it more this can be like below:
[H H H H] or [H H H C] or [H C C C] or ..........[C C C C}
in total there would be 2*2*2*2=16 case for that.
I would like to generate all the 16 cases and following that I want to proceed the calculations. I dont know how to form these 16 cases and cover all the possible cases for that.

DGM on 30 Sep 2021
If you mean actual strings instead of chars, then:
A = dec2bin(0:15);
A(A=='1') = 'H';
A(A=='0') = 'C';
A = string(num2cell(A))
A = 16×4 string array
"C" "C" "C" "C" "C" "C" "C" "H" "C" "C" "H" "C" "C" "C" "H" "H" "C" "H" "C" "C" "C" "H" "C" "H" "C" "H" "H" "C" "C" "H" "H" "H" "H" "C" "C" "C" "H" "C" "C" "H" "H" "C" "H" "C" "H" "C" "H" "H" "H" "H" "C" "C" "H" "H" "C" "H" "H" "H" "H" "C" "H" "H" "H" "H"
R@SH on 1 Oct 2021
I appreciate your full support dear DGM.

Akira Agata on 1 Oct 2021
Another possible solution:
[p,q,w,s] = ndgrid({'H','C'});
A = [p(:),q(:),w(:),s(:)];
disp(A)
{'H'} {'H'} {'H'} {'H'} {'C'} {'H'} {'H'} {'H'} {'H'} {'C'} {'H'} {'H'} {'C'} {'C'} {'H'} {'H'} {'H'} {'H'} {'C'} {'H'} {'C'} {'H'} {'C'} {'H'} {'H'} {'C'} {'C'} {'H'} {'C'} {'C'} {'C'} {'H'} {'H'} {'H'} {'H'} {'C'} {'C'} {'H'} {'H'} {'C'} {'H'} {'C'} {'H'} {'C'} {'C'} {'C'} {'H'} {'C'} {'H'} {'H'} {'C'} {'C'} {'C'} {'H'} {'C'} {'C'} {'H'} {'C'} {'C'} {'C'} {'C'} {'C'} {'C'} {'C'}
R@SH on 1 Oct 2021
thank you so much dear Akira. It was really helpful

R2016b

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