Rearrange rows in data frame

Question

I have a data frame in R which looks like this with two columns:

ID     phone_number
Mark     866458
Paul     986564
Jack     987543
Mary     523422
<         


        

Answer 1

We can also do

library(tidyverse)
pmap(df1, c) %>% 
       unlist %>% 
       tibble(new_col = .)