小编Der*_*ong的帖子

O(n!)函数的示例(在代码中)是什么？应该参考n运行适当数量的操作; 也就是说,我在问时间的复杂性.

我有这个功课需要打印asterick画三角形.

当drawTriangle(0);

 *

当drawTriangle(1);

  *
 **

当drawTriangle(2);

   *
  **
 * *
****

当drawTriangle(3);

       *
      **
     * *
    ****
   *   *
  **  **
 * * * *
********

当drawTriangle(4);

               *
              **
             * *
            ****
           *   *
          **  **
         * * * *
        ********
       *       *
      **      **
     * *     * *
    ****    ****
   *   *   *   *
  **  **  **  **
 * * * * * * * *
****************

当drawTriangle(5);

                               *
                              **
                             * *
                            ****
                           *   *
                          **  **
                         * …

    List<PersonsInChargeEntity> picList = new List<PersonsInChargeEntity>();
    List<ClientEntity> clientList = new List<ClientEntity>();

    var returnList = (from PersonsInChargeEntity pic in picList
                     join ClientEntity client in clientList
                     on pic.ClientNumber equals client.ClientNumber
                     select new { ClientNumber = pic.ClientNumber, CompanyName = client.CompanyNameFull, AICGroupID = pic.AICStaffGroupID, RPStaffID = pic.RPStaffID, MPStaffID = pic.MPStaffID, CSPStaffID = pic.CSPStaffID, EQCRStaffID = pic.EQCRStaffID }).ToList<PicList>();

如何将returnList转换为List <entity>？下面是我的实体类.

public class PicList
{
    int _ClientNumber = 0;
    string _CompanyName = "";
    int _AICGroupID = 0;
    int _RPStaffID = 0;
    int _MPStaffID = 0;
    int _CSPStaffID …