How do I set up a function to split up a randomly generated vector into an "if,else" statements to resize it in equal portions of 1, 2, or 3 rows

array/vector = [1 2 3 4 5 6 7 8 9 10 11 12];
% but assuming I dont know the inputs to break up manually
% and as different possible answers I want...


output1 = [1,2,3,4,5,6,7,8,9,10,11,12]

output2 = [1,2,3,4,5,6]
          [7,8,9,10,11,12]
          
output3 = [1,2,3,4]
          [5,6,7,8]
          [9,10,11,12]

Answer 1

[JESUS DAVID ARIZA ROYETH]

clc
array = [1 2 3 4 5 6 7 8 9 10 11 12];%1:12 do the same
s=1:numel(array);
fac = s(rem(numel(array),s)==0);
allpos=arrayfun(@(x) reshape(array,[],x)',fac,'UniformOutput',false);
allpos{:}