* Update linear_search.py
Python implementation of recursive linear search algorithm
* Update linear_search.py
Added different doctests
Added the parameter hints
Handled the exception
* Update linear_search.py
added parameter hints to linear_search
* Update linear_search.py
Both the functions return the index if the target is found and -1 if it is not found
The rec_linear_search raises an exception if there is an indexing problem
Made changes in the doc comments
* Update linear_search.py
Co-authored-by: Christian Clauss <cclauss@me.com>