STL SET 类 排序

STL SET 类 排序 - 缘起宇轩阁 - 博客频道 - CSDN.NET

STL SET 类 排序

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C++语言编程

2011-03-04 19:44
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#include <set>
#include <string>
#include <iostream>
using namespace std;

class CEmployee {
public:
    CEmployee();
    ~CEmployee();
     const string getName() const;
     void setName(const string name);
     const string getTitle() const;
     void setTitle(string title);
     int getID() const;
     void setID(int id);
private:
    int m_id;
    string m_username;
    string m_title;

};
CEmployee::CEmployee()
{

}
CEmployee::~CEmployee()
{
}
const string CEmployee::getName() const
{
     return m_username;
}
void CEmployee::setName(const string username)
{
    m_username = username;
}

const string CEmployee::getTitle() const
{
  return m_title;
}

void CEmployee::setTitle(string title)
{
   m_title = title;
}
int CEmployee::getID() const
{
   return m_id;
}
void CEmployee::setID(int id)
{
   m_id = id;
}
class sortByID
{
   public:
   bool operator() (CEmployee const &_A, CEmployee const &_B) const
   {
    if(_A.getID() < _B.getID()) return true;
    if(_A.getID() == _B.getID()) return _A.getName().compare(_B.getName()) < 0;
    return false;
   }
};

int main()
{
       set<CEmployee, sortByID> empIDSet; // se是雇员的set，
       set<CEmployee, sortByID> ::iterator  iter;
       CEmployee employeeInfo;
       employeeInfo.setName("employee_one");
       employeeInfo.setTitle("employee");
       employeeInfo.setID(1);
       empIDSet.insert(employeeInfo);
       CEmployee employeeInfo2;
       employeeInfo2.setName("employee_two");
       employeeInfo2.setTitle("CFO");
       employeeInfo2.setID(5);
       empIDSet.insert(employeeInfo2);

       CEmployee employeeInfo3;
       employeeInfo3.setName("employee_three");
       employeeInfo3.setTitle("manager");
       employeeInfo3.setID(3);
       empIDSet.insert(employeeInfo3);


        for (iter=empIDSet.begin(); iter!=empIDSet.end(); iter++)
        {
           cout<<iter->getID()<<" " <<iter->getName()<<" " <<iter->getTitle()<<endl;
        }
        return 0;
}