leetcode976

public class Solution
    {
        public int LargestPerimeter(int[] A)
        {
            var list = A.OrderByDescending(x => x).ToList();
            var length = list.Count;
            if (length < 3)
            {
                return 0;
            }
            for (int i = 0; i <= length - 3; i++)
            {
                //Console.WriteLine(i);
                var list2 = list.Skip(i).Take(3).ToList();
                var a = list2[0];
                var b = list2[1];
                var c = list2[2];
                if (a < b + c && b < a + c && c < a + b)
                {
                    return a + b + c;
                }
            }
            return 0;
        }
    }