C# Array, How to make data in an array distinct from each other?

Question

C# Array, How to make data in an array distinct from each other? For example

string[] a = {"a","b","a","c","b","b","c","a"}; 

how to get

string[]b = {"a","b","c"}

Answer 1

Easiest way is the LINQ Distinct() command :

var b = a.Distinct().ToArray();

Answer 2

You might want to consider using a Set instead of an array. Sets can't contain duplicates so adding the second "a" would have no effect. That way your collection of characters will always contain no duplicates and you won't have to do any post processing on it.