Adding unique values to an array

I'm trying to generate 100 unique random numbers.

I've been trying through various iterations to either do an if not in RNQ append, if in RNQ continue type loop.

I want to keep generating numbers UNTIL I have 100 unique numbers.

I have a pway of discretising them to a specific distribution, but am stuck at the previous generating part.

RNQ = []
for N = 1:inf
    r = rand(N,1);
    RNQ = [RNQ;x]
    UNI = unique(RNQ);
    if numel(UNI)==100
        break
    else
        continue
    end
end

Answer 1

[Voss]

You can use ismember to check whether the new random number is already in the array of unique numbers:

UNI = [];
while numel(UNI) < 100
    r = rand(); % generate one random number (~Uniform [0,1])
    if ismember(r,UNI)
        continue
    end
    UNI = [UNI; r];
end