List 如何去重

 

List<string[]> 如何去重，代码如下:

static void Main(string[] args)
        {

            List<string[]> list = new List<string[]>();

            list.Add(new string[] { "1", "2", "3" });
            list.Add(new string[] { "1" });
            list.Add(new string[] { "1", "2", "3" });
            list.Add(new string[] { "1" });
            list.Add(new string[] { "1" });

            List<string> strList = new List<string>();
            foreach (var item in list)
            {
                string s = string.Join(",", item);
                strList.Add(s);
            }
            //要删除的元素的下标集合
            List<int> removeIndexList = new List<int>();
            if (list.Count >= 2)  //确保下标i不越界
            {
                string currentStr = string.Empty;
                for (int i = 0; i < strList.Count; i++)
                {
                    currentStr = strList[i];
                    for (int j = i + 1; j < strList.Count; j++)
                    {
                        if (currentStr == strList[j])
                        {
                            //添加到要删除的索引集合removeIndexList中
                            removeIndexList.Add(j);
                        }
                    }
                }
                removeIndexList = removeIndexList.Distinct().ToList();////去除重复的索引
                //添加到要删除的对象集合
                List<string[]> removeList = new List<string[]>();
                foreach (var index in removeIndexList)
                {
                    removeList.Add(list[index]);
                }
                //遍历要删除对象的集合，删除原集合中的对象
                foreach (var item in removeList)
                {
                    list.Remove(item);
                }

                foreach (var item in list)
                {
                    string s = string.Join(",", item);
                    Console.WriteLine(s);
                }
                Console.ReadKey();

            }
        }

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