MATLAB: Dear all:I have a 6* 3 matrix. I wanna choose 4rows randomly. how can I selecete all array in a rows randomly without replacement

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for example:

A=[1 2 3;2 3 5;6 4 1;8 6 0;2 4 1;1 4 7;8 4 2];

and the answer is:

[1 2 3;6 4 1;8 6 0;8 4 2];

A=[1 2 3;2 3 5;6 4 1;8 6 0;2 4 1;1 4 7;8 4 2]
B=A(randperm(6,4),:)

[cell_A{:}]

m=[1 2 3;1 1 1;4 5 8;4 5 8;1 1 1;1 1 1;1 1 1;1 1 1;1 1 1;1 1 1;1 1 1;1 1 1;4 5 8;7 8 5; 47 9 5;7 8 5;5 322 5;7 8 55];

variant 1

[a b n] = unique(m,'rows','first');
[id id] = sort(b);
out1 = a(id,:);

variant 2

[a b n] = unique(m,'rows','first');
[id id] = sort(b);
t = accumarray(n,ones(numel(n),1)) == 1;
a2 = a(id,:);
out2 = a2(t(id),:);