How to avoid repetition in for loop that is using randi

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I have the following loop where I fill IDCELL with different combinations of ID numbers. However, if a combination of ID numbers already exists, I want the loop to move on and try again. VID1, VID2 are two 3x3 cells.
for o=1:numel(INCREASE2)
for oz=1:999
index=randi([1,numel(VID1)]);
ID1 = VID1{index};
index2 = randi([1, numel(VID2)]);
ID2 = VID2{index2};
%ID1 and ID2 cannot be the same number
if numel(intersect(ID1,ID2))|| %some statement here
continue
else
IDCELL{o}={ID1; ID2};
break
end
end
end

Accepted Answer

Alan Stevens
Alan Stevens on 13 Apr 2021
Does randperm do what you want?
help randperm

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R2019a

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