MATLAB: Generating random number between 1 to 10

random numbers

Hi everyone,
I want to generate a random number between 1 to 10 for 10 loop iteration, with this code section of mine but i want that each time it generate a different number. Forexample if 2 is generated for the 1st loop iteration, then for the rest of 9 iteration. It won't generate 2 again. Similarly for the rest of other numbers between 1 to 10.
for i=1:10
r = (b-a)*rand(1) + a
end

Best Answer

That's "sampling w/o replacement". One relatively simple way--
N1=1; N2=10;   % range desired

p=randperm(N1:N2);
for i=N1:N2
  r=p(i);
  ...
ERRATA
As noted, in comment, forgot there isn't such a form for randperm. Seems like reasonable enhancement altho it's easy enough to scale externally, too.
Use
N=10;   % range desired
p=randperm(N);
for i=1:N
instead.
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