create subarray from an given array

To create few no. of arrays from a given long array, eg. given = [1 2 3 4 5 6 7 8 9 ....]

to create randomly [3 4 9] [1 5 8] [2 6 7] ... if size of group is given between 3 and 3 (between two nos.) by user

or [2 6 9 5] [1 3 4 7 8] etc.. if the size of group is between 4 and 5 given by user (may vary and no of group can also vary) also no number should repeat again, and should be present in array given earlier

Answer 1

[Azzi Abdelmalek]

EDIT

a=[1 2 3 4 5 6 7 8 9]
n=numel(a)
% find divisor of a
c=1:n
d = c(rem(n,c)==0)
% number of groupes
ng=d(randi(numel(d),1))
%------Length of  group------------------
lg=n/ng
%-------------Result---------------------
s=randperm(n);
out=num2cell(reshape(a(s),ng,lg),2)

[Industrial]

thank you for answer But the following error comes: ??? Error using ==> randperm Too many input arguments.

Error in ==> Untitled2 at 7 ng=d(randperm(numel(d),1))

[Industrial]

To create few no. of arrays from a given long array, eg. given = [1 2 3 4 5 6 7 8 9 ....]

to create randomly [3 4 9] [1 5 8] [2 6 7] ... if size of group is given between 3 and 3 (between two nos.) by user

or

[2 6 9 5] [1 3 4 7 8] etc.. if the size of group is between 4 and 5 given by user (may vary and no of group can also vary)

also no number should repeat again, and should be present in array given earlier

[Azzi Abdelmalek]

What version of matlab are you using?

[Azzi Abdelmalek]

Look at edied answer

[Industrial]

sir i am usin R2009a version of matlab

[Azzi Abdelmalek]

Ok, try the edited answer

Answer 2

[Jos (10584)]

This problem is somewhat ill-defined. If there are multiple group sizes allowed, should all group sizes be present an equal amount of times? And things might not fit, for instance, when the number of elements in A is odd, and the AllowGroupSize is even …

Here is a suggestion:

A = 1:21 
AllowedGroupSize = [3 4] 
GroupSizes = repmat(AllowedGroupSize,1, numel(A) ./ sum(AllowedGroupSize))
C = mat2cell(A(randperm(numel(A))),1,GroupSizes)

[Industrial]

Thank you for your kind consideration

But in this problem all sizes of groups might not be present in the answer. Even groups may have same sizes, but may differ when executed number of times in a loop. Actually it is to be used in a Manufacturing cell family formation problem in which a part family may have some parts and another part family may have from rest of the parts.

thanks.