public static void GetA2(int num)
        {
            //Num数字集合 Sum数字之和
            List<string> list = new List<string>();
            list = GetNum(list, 10, num, "");
            list.Sort();
            foreach (string str in list)
            {
                Console.WriteLine(str);
            }
        }

------解决方案--------------------
简单问题复杂化了

------解决方案--------------------
如果只有加的话，全排列吧

------解决方案--------------------
C# code
        static void Main(string[] args)
        {
            int i = 6;
            int[] arr = Enumerable.Range(1, i).ToArray();
            int sum = 10, c = 0;
            bool[] flag = new bool[i];
            Calculate(arr, c, sum, flag);
            Console.ReadLine();
        }
        public static void Calculate(int[] arr, int c, int sum, bool[] flag)
        {
            if (sum == 0)
                Output(arr, c, flag);
            else
            {
                if (c == arr.Length)
                    return;
                else
                {
                    flag[c] = true;
                    if (sum - arr[c] >= 0)
                        Calculate(arr, c + 1, sum - arr[c], flag);
                    flag[c] = false;
                    if (sum >= 0)
                        Calculate(arr, c + 1, sum, flag);
                }
            }
        }
        public static void Output(int[] arr, int c, bool[] flag)
        {
            for (int i = 0; i < c; i++)
            {
                if (flag[i])
                    Console.Write("{0,2}", arr[i]);
            }
            Console.WriteLine();
        }
/*
 1 2 3 4
 1 3 6
 1 4 5
 2 3 5
 4 6

*/

------解决方案--------------------
2 8 
3 7
算漏了


------解决方案--------------------
汗 不好意思 没有看到 i=6

------解决方案--------------------
呵呵，有意思~！

------解决方案--------------------
造个方法递归调用

------解决方案--------------------
C# code

        public void Main()
        {
            num(10, 6);
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="value">匹配值</param>
        /// <param name="i">最大数</param>
        public void num(int value, int i)
        {
            num2(0, 0, value, i, "");
        }


        public void num2(int i, int flag, int value, int maxvalue, string output)
        {
            int temp = flag + i;
            if (flag > 0)
            {
                if (output == "")
                {
                    output = flag.ToString();
                }
                else
                {
                    output = output + "," + flag;
                }
            }

            if (temp == value)
            {
                Response.Write(output + "<br>");
                Console.WriteLine(output);
            }
            else if (temp < value)
            {
                for (