Efficiently merge string arrays in .NET, keeping distinct values

Question

I\'m using .NET 3.5. I have two string arrays, which may share one or more values:

string[] list1 = new string[] { \"apple\", \"orange\", \"banana\" };
string[]         


        

Answer 1

Probably creating a hashtable with your values as keys (only adding those not already present) and then converting the keys to an array could be a viable solution.