Paste elements of a vector together with a given separator -R

Question

I want to paste elements of a vector together, e.g

vec <- c("a","b","c")

to string <- "a,b,c"

I tried paste0(vec, sep =",", collapse= "")

but the output is string <- "a,b,c,"

What is the correct way to do this?

Answer 1

Use it like this:

paste0(vec, collapse=",")

the "collapse" argument specifies the value to use when collapsing the values into a single string