Complex sentence: Quicksort gained widespread adoption, appearing, for example, in Unix as the default library sort function, hence it lent its name to the C standard library function qsort and in the reference implementation of Java.
Split into simpler sentences: Quicksort gained widespread adoption, appearing, for example, in Unix as the default library sort function. Hence, it lent its name to the C standard library function qsort and in the reference implementation of Java.