How to select values within a provided index range from a List using LINQ

Question

I am a LINQ newbie trying to use it to acheive the following: I have a list of ints:- ``` List intList = new List(new int[]{1,2,3,3,2,1}); ``` Now, I want to compare the sum of the first three elements [index range 0-2] with the last three [index range 3-5] using LINQ. I tried the LINQ Select and Take extension methods as well as the SelectMany method, but I cannot figure out how to say something like ``` (from p in intList where p in Take contiguous elements of intList from index x to x+n select p).sum() ``` I looked at the Contains extension method too, but that doesn't see to get me what I want. Any suggestions? Thanks.

Accepted Answer

Use Skip then Take.

```
yourEnumerable.Skip(4).Take(3).Select( x=>x )

(from p in intList.Skip(x).Take(n) select p).sum()
```

How to select values within a provided index range from a List using LINQ

Solution

Problem