added search parameters. fix for issue #2528

[webbdays]

Added search parameters to improve the search. File path is considered.

Fix for issue #2528

[webbdays]

But there is one known problem. If the file already has the search parameters, then it appears 2 times.

Look at this : closest_pair.cpp

And my commit looks like this : closest_pair.cpp

[webbdays]

@AdiChat Please look at this PR