使用LINQ从逗号分隔的数组中获得独特的价值

Question

Supposed I have a string array like this

{
"A“，
”B",
"A,B,D",
"C"
}

Is it possible that I write a single LinQ to get the distinct values {"A","B","C","D"} into a List?

Answer 1

lists.SelectMany(l => l.Split(',')).Distinct().ToList();

Answer 2

var distinctValues = myList.SelectMany(x => x.Split(',')).Distinct().ToList();

This will split each string, and then flatten them into a single list, and get the distinct elements.

If you want to get the elements in alpha order, then you can tack on a .OrderBy(x => x) right before .ToList() .

Answer 3

Fyi in linq query syntax its the same as the answers above

List s = new List() { "A","B","A,B,D","C"};

var result = (from x in s from y in x.Split(',') select y).Distinct().ToList();