Generate a repeating sequence

Question

I need to generate a vector of the following format using R:

1:10, 1:10, 11:20, 11:20, ... 121:130, 121:130

Is there an easier way than cre

Answer 1

I think this will do you.

x <- ((0:12)*10)+1
y <- x + 9

repeatVectors <- function(x,y){
    rep(seq(x,y),2)
}

z <- mapply(repeatVectors, x,y)
z <- as.vector(z)