Matlab: How to random shuffle columns of matrix

Question

I have a matrix like:

 A=     4 7 8 9     3 3 5 7     6 4 8 6 

and wants to random shuffle columns and do it something like:

 A=     8 4 9 7     5 3 7 3     8 6 6 4 

does anyone have any idea?

Answer 1

You can shuffle columns using indexing:

A(:,[3 1 4 2]) 

If you want to do it randomly, you can create a random permutation:

A(:,randperm(size(A,2)));