C# 前一个数是后一个数的父级

   private void button2_Click(object sender, EventArgs e)
        {

            var str = "1  2  3  4  5 6 7 8 9 10 11 12 13 ";
            //char[] chars = str.Replace(" ","").ToArray();

            string[] strArry =  str.Split(" ".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);

            Dictionary<int, string> dict = new Dictionary<int, string>();
            for (int i=0;i< strArry.Length-1;i++)
            {
                dict.Add(int.Parse(strArry[i]), strArry[i+1]);
            }
            //循环插入数据 
　　　　　　　　
        }