Create random permutations of an array of decimals or a vector of decimals.

If i have the following vector [0;0.25;0.75;0.5], how i can create 2 or 3 or n permutations? I cannot use randperm, because works only with integers. Thank you in advance!

[John D'Errico]

Hmm. You cannot use the numbers that randperm will produce as indexes into the vector in question? Gosh, I thought you could do that. So this won't work at all:

v = [0;0.25;0.75;0.5],
ind = randperm(numel(v));
v(ind)

I really thought that would work too. Maybe you should try it? :)

[Dennis_Pana]

It works!! How i can create 2 or 3 or n different permutations without using a for loop? Thank you again!

Answer 1

[Walter Roberson]

N = 3;
v = [0;0.25;0.75;0.5];
[~, idx] = sort(rand(N, length(v)), 2);
permuted_v = v(idx);