Recursively repeat vector elements N times each [duplicate]

Question

I want to repeat a vector N times but element-wise, not the whole vector.

For instance, I have:

v <- c('a', 'b') 

Say I want to repeat n times:

n <- 3 

I want:

vfill <- c(rep(v[1], n), rep(v[2], n)) print(vfill) [1] "a" "a" "a" "b" "b" "b" 

My best solution to date:

ffillv <- function(i) rep(v[i], n) c(sapply(seq_len(length(v)), ffillv)) 

I am interested in fast & scalable solutions, for instance using rbind, plyr, etc.

Answer 1

rep(v, each=3) 

or

rep(v, each=n) 

where you have n defined