动态LIST怎么LING'输出上面一样的数据？

[a82344626]

     string[] arr_a = { "1", "2", "3" };
            string[] arr_b = { "5" };
            string[] arr_c = { "6", "7" };

            var q = from a1 in arr_a
                    from b1 in arr_b
                    from c1 in arr_c
                    select a1 + b1 + c1;

            foreach (var item in q)
            {
                Console.WriteLine(item);
            }

            string[] arr_d = { "9", "10" };
            List<string[]> ls = new List<string[]>();
            ls.Add(arr_a);
            ls.Add(arr_b);
            ls.Add(arr_c);
            ls.Add(arr_d);

            var qx = from a1 in ls.ToArray()
                     from xx in a1
                     select xx;
            foreach (var item in qx)
            {
                Console.WriteLine(item);
            }

动态LIST怎么LING'输出上面一样的数据？

[xuzuning]

            var qx = ls[0].ToList();
            for (var i = 1; i < ls.Count; i++)
                qx = (from a in qx
                      from b in ls[i].ToList()
                      select a + b).ToList();

[xuzuning]

不转 List 也行

            var qx = ls[0];
            for (var i = 1; i < ls.Count; i++)
                qx = (from a in qx
                      from b in ls[i]
                      select a + b).ToArray();