leetcode系列---3Sum C#code

Function:

        public static List<int[]> SumSet(int[] array)
        {
            List<int[]> result = new List<int[]>();
            for (int i = 0; i < array.Length; i++)
            {
                int differ = -array[i];
                for (int j = i + 1; j < array.Length; j++)
                {
                    var a = array.Select((chr, index) => new { chr, index }).Where(chr=>chr.chr == differ - array[j]);
                    if (a.ToList().Count > 0)
                    {
                        int[] aa ={ array[i],array[j],a.ToList()[0].chr};
                        result.Add((aa.OrderBy(n => n)).ToArray());
                    }
                }
            }
            HashSet<int[]> set = new HashSet<int[]>(result);
            result.Clear();
            result.AddRange(set);
            return result;
        }

　　

 

控制台展示：

        static void Main(string[] args)
        {
            {
                Console.WriteLine("请输入数组：");
                string ss = Console.ReadLine();
                string[] str = ss.Split(',');
                int[] arry=new int[str.Count()];
                for (int i = 0; i < str.Count(); i++)
                {
                    string sss = str[i];
                    arry[i] = Convert.ToInt32(sss);
                }
                Console.WriteLine("满足条件的组合有：");
                List<int[]> result = SumSet(arry);
                foreach (int[] ar in result)
                {
                    foreach (int i in ar)
                    {
                        Console.Write(i);
                    }
                    Console.Write("_");
                }
                Console.ReadLine();
            }
        }

　　

问题点：List<int> 去重复失败。。。。