LINQ query to find if items in a list are contained in another list

Question

I have the following code:

List test1 = new List { \"@bob.com\", \"@tom.com\" };
List test2 = new List

        

Answer 1

var output = emails.Where(e => domains.All(d => !e.EndsWith(d)));

Or if you prefer:

var output = emails.Where(e => !domains.Any(d => e.EndsWith(d)));