How to obtain and organize the number in a R vector?

I have a vector of number like this

original [1] 0 1 2 3 4 3 5 1 4 0 0 1

and I want to obtain a new vector like this

newvector [1] 0 1 2 3 4 5

I am trying to do this in a straight forward way because original is really, really long