gistfile1.txt

    public static IEnumerable<Point> GetPoints(IEnumerable<int> coordinates)
    {
        var e = coordinates.GetEnumerator();

        while (e.MoveNext())
        {
            int x = e.Current;
            // here I assume the length isn't odd, so I ignore the result of MoveNext
            e.MoveNext();
            int y = e.Current;
            yield return new Point(x, y);
        }
    }