Adding unique values to an array

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Lou
Lou 2022-4-25
回答： Voss 2022-4-25
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

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采纳的回答

Voss
Voss 2022-4-25
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

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