Select random element in a list of R?

Question

a<-c(1,2,0,7,5) 

Some languages have a picker -function -- choose one random number from a -- how in R?

Answer 1

# Sample from the vector 'a' 1 element. sample(a, 1) 

Answer 2

the above answers are technically correct:

sample(a, 1) 

however, if you would like to repeat this process many times, let's say you would like to imitate throwing a dice, then you need to add:

a <- c(1,2,3,4,5,6) sample(a, 12, replace=TRUE) 

Hope it helps.