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

Read this article about generating random numbers in R.

http://blog.revolutionanalytics.com/2009/02/how-to-choose-a-random-number-in-r.html

You can use sample in this case

sample(a, 1)

Second attribute is showing that you want to get only one random number. To generate number between some range runif function is useful.