How can I vectorize for loop with randsample

I like to know if there is a any simpler way of doing this (without for-loop):

    A = zeros(4,3)   %this size is just an example

    for i=1 : 4      %I want to add 4 vectors ...

      A(i,:) = randsample(7,3)'  %... which are 3 different numb from [1-7]

    end

    A =

       4     6     2
       1     7     3
       2     1     5
       3     5     6

So my point is to create a matrix from different vectors, which I have created with randsample. Is there a way I can vectorize this?

Have been fighting with this many days :)

Yours Merit

Answer 1

[Walter Roberson]

numvecs = 4;
popsize = 7;
numselected =3;

[junk, randidx] = sort(rand(numvecs, popsize), 2);  %sort along row
A = randidx(:,1:numselected);

[Andrei Bobrov]

+1

[Merit]

Thank you Walter, just what I needed :)

Merit