Convert List Elements into a Single String in R

To convert list elements into a single string, we can use paste function but firstly we would need to unlist the elements. Also, since we want to create a single string double quotes will be required at the end of the output. For example, if we have a list that contains 5 elements say 1, 2, 3, 4, 5 then conversion of these elements into a single string would be "12345".

Example1

 Live Demo

List1<−list(1,2,3,2,2,1,2,1,4,2,2,2,2,2,2,3,2,2)
List1

Output

[[1]]
[1] 1
[[2]]
[1] 2
[[3]]
[1] 3
[[4]]
[1] 2
[[5]]
[1] 2
[[6]]
[1] 1
[[7]]
[1] 2
[[8]]
[1] 1
[[9]]
[1] 4
[[10]]
[1] 2
[[11]]
[1] 2
[[12]]
[1] 2
[[13]]
[1] 2
[[14]]
[1] 2
[[15]]
[1] 2
[[16]]
[1] 3
[[17]]
[1] 2
[[18]]
[1] 2

Converting List1 elements into a single string element −

Example

List1<−paste(unlist(List1),collapse="")
List1

Output

[1] "123221214222222322"

Example

class(List1)

Output

[1] "character"

Example2

 Live Demo

List2<−list(x1<−rpois(5,5),x2=rpois(5,2),x3=rpois(5,5),x4=rpois(10,4))
List2

Output

[[1]]
[1] 6 2 8 3 5
$x2
[1] 2 4 3 2 5
$x3
[1] 8 1 12 1 4
$x4
[1] 7 5 4 3 6 2 5 3 2 2

Converting List2 elements into a single string element −

Example

List2<−paste(unlist(List2),collapse="")
List2

Output

[1] "62835243258112147543625322"