generate random numbers outside a range

How can I generate random numbers outside a specific range? I want to generate random numbers outside the interval of [-1,3]

[Adam]

Up to what bounds? Generating unbounded random numbers is somewhat problematic.

[Omar Hammouda]

I thought about a solution, want to know if there could be better

lets say the numbers I want are between (-11,-1) and (3,13) and I need 5 numbers

xtemp(:,1) = (-1+11).*rand(5,1)-11; %picks a random number from the 1st interval
xtemp(:,2) = (13-3).*rand(5,1)+3; %picks a random number from the 2nd interval
for i=1:5
    x(i,1) = xtemp(i,randi(2))
end

Answer 1

[KSSV]

a = -10;
b = 10;
r = (b-a).*rand(1000,1) + a;
%%remove the range [-1 3] 
r1 = r ;
r1(r>=-1 & r<=3) = [];