Compare two list elements with LINQ

Question

I\'m trying to find a LINQ expression to compare two list elements.

What i want to do is:

List _int = new List { 1, 2, 3, 3, 4,         


        

Answer 1

List _int = new List { 1, 2, 3, 3, 4, 5 };
Enumerable.Range(0, _int.Count - 1)
    .Select(i => new {val = _int[i], val2 = _int[i + 1]})
    .Where(check => check.val == check.val2)
    .Select(check => check.val);