refactor: Enhance docs, remove main, add tests in `MergeSortedSingl…
#4051
| Job | Run time |
|---|---|
| 2m 55s | |
| 2m 55s |
main, add tests in `MergeSortedSingl…
#4051
| Job | Run time |
|---|---|
| 2m 55s | |
| 2m 55s |