How can we check whether one array contains one or more elements of another array in #?

Question

I have a an array of strings:e.g:

string [] names ={"P","A","B","G","F","K","R"}

I have another array :

string [] subnames={"P","G","O"}

How can we check whether names array has any elements of subnames array.

In the above example "P" and "G" are there in names.

Answer 1

The absolute simplest way would be to use the Enumerable.Intersect method. Then us the Any method on the result

bool containsValues = names.Intersect(subnames).Any();

Answer 2

This will work too:

bool result = names.Any(subnames.Contains);

EDIT

This code may look incomplete but it actually works (method group approach).