added len function (#1812)

* added __len__ function

Added a function to count number of nodes in linked list

* Updated __len__ method

used snake_case instead of camel case

* Add tests to __len__()

Co-authored-by: Christian Clauss <cclauss@me.com>

Akash committed 5y ago

f9e0dd94d6040cd41b1272e8a6ece34dc767152e

Parent: 38d2e98

Committed by GitHub <noreply@github.com> on 5/18/2020, 4:10:55 PM

added __len__ function (#1812)

added len function (#1812)