How can I create a random vector with at most 1 in it?

I tried to make a random vector of 0's and 1's like the code below:

v = round(rand(1,n)) % where n is the dimension of the vector

But I'd like to give it a condition to avoid the existence of 1 more than one time. Also, I want the index to be selected randomly.

For example, this:

[1 1 0 0] % where n = 4

is not accepted, but this:

[1 0 0 0]
%or
[0 1 0 0]

either of them will be accepted.

So any help please? Thanks!

Answer 1

[Guillaume]

Another option:

v = randperm(n) == n

or

v = randperm(n) == 1

[Stephen Cobeldick]

Very neat, but this always contains one 1, whereas the title asks for "...with at most 1", which would include the possibility of zero 1's. This could be solved easily:

randperm(n)==randi(0:1)

[Ezz El-din Abdullah]

Thanks a lot Guillaume and Stephen. Appreciate your help, both :)