How to concatenate vector of integers interleaving elements with a character?

Question

I would like to turn vector

a <- 1:5

into a string

"1_2_3_4_5"

How to do this?

paste(a,sep="_")

does not work this way.

score 2 · Accepted Answer · answered Apr 17 '15 at 09:40

2

You could try collapse

paste(a, collapse="_")
#[1] "1_2_3_4_5"

answered Apr 17 '15 at 09:40

akrun

score 2 · Answer 2 · answered Apr 17 '15 at 09:40

2

you can try this

paste0(a, collapse="_")
# [1] "1_2_3_4_5"

answered Apr 17 '15 at 09:40

Mamoun Benghezal

score 2 · Answer 3 · answered Apr 17 '15 at 09:44

2

Just for fun:

 gsub(', ', '_', toString(a))
 #[1] "1_2_3_4_5"

answered Apr 17 '15 at 09:44

Colonel Beauvel

3 Answers3