我想组由下列元组:C#列表<组<字符串,字符串,整数>>组由最小值最大值INT
List<Tuple<string, string, int>> tu = new List<Tuple<string, string, int>>();
tu.Add(new Tuple<string, string, int>("a", "b", 201601));
tu.Add(new Tuple<string, string, int>("a", "b", 201602));
tu.Add(new Tuple<string, string, int>("a", "b", 201603));
tu.Add(new Tuple<string, string, int>("c", "d", 201601));
tu.Add(new Tuple<string, string, int>("c", "d", 201602));
的结果应该是这样的一个新的记录:
//Item1, Item2, Min(Item2), Max(Item3)
List<Tuple<string, string, int, int>> newtu = new List<Tuple<string, string, int, int>>();
a,b,201601,201603
c,d,201601,201602
你能帮我吗?
*我想* =>好了,但什么也来试试? –