random integer between 0 and 15 with equal probability

Hi,

I am trying to generate a random integer between 0 and 15.

I have written the following code:

b=0;
B=15;
B = b + (B-b) * rand

Is it right?

Also, will the random integer generated from the above code have equal probability? Is not, how should the code be modified?

Answer 1

[Matt J]

 B=randi([0,15])

[Syed]

thanks Matt J

[Syed]

one more thing: what if i want to avoid 0 being generated as an integer because i am getting infinity if there is a division process afterwards in my code?

[Azzi Abdelmalek]

B=randi([1,15])

[Matt J]

Or,

B=randi(15);

[Raziur Rahman]

what about equal probability?

[Stephen23]

When you read the randi documentation, its description states on the very first line "Uniformly distributed pseudorandom integers". This means the integers have equal probability. It also means that you should learn to read the documentation, because it tells you how MATLAB works.

[ma ag]

lmao its ok to ask questions

Answer 2

[Azzi Abdelmalek]

   B1= ceil(b + (B+1-b) * rand)-1

[Syed]

thanks

Answer 3

[Jan]

This is not a hard proof, but a strong hint already:

b = 0;
B = 15;
R = b + (B-b) * rand(1, 1e6);
histc(R, unique(R))