refactor: Enhance docs, remove main, add tests in `CountSinglyLinke…
#2149
| Job | Run time |
|---|---|
| 2m 42s | |
| 2m 42s |
main, add tests in `CountSinglyLinke…
#2149
| Job | Run time |
|---|---|
| 2m 42s | |
| 2m 42s |