Get index of a specified element in hashset C#

Asked May 04 '16 at 17:24

Active May 05 '16 at 11:24

Viewed 1,883 times

I would like to know if there is a method to get the index of a specified element using hashsets. For example,I have this condition,and I want to get the index of the specified element

    if(hash_set.Contains(search))
     {
       //Get index of element search
     }

Edit: Thanks for all your answers. I decided to use Dictionary<> instead!

edited May 05 '16 at 11:24

asked May 04 '16 at 17:24

Catalin

6

No. A hashset doesn't have ordering, so trying to find a specific index doesn't make sense. – sstan May 04 '16 at 17:25
@sstan is there another container as fast as hashsets(for the contain function) that has ordering? – Catalin May 04 '16 at 17:26
1

Try here: [HashSet that preserves ordering](http://stackoverflow.com/questions/1552225/hashset-that-preserves-ordering) – sstan May 04 '16 at 17:27
Nope use a dictionary – FirebladeDan May 04 '16 at 17:40
The closest thing you can get is the key. – Malte R May 04 '16 at 17:58
As sstan says, there's no such thing as the index of an element in a `HashSet`, because that collection type is unordered. You will need a different collection type, i.e. as shown in the marked duplicate. – Peter Duniho May 04 '16 at 23:47

Get index of a specified element in hashset C#

0 Answers0