STL案例_员工分组 

#include<iostream>
using namespace std;
#include<map>
#include<vector>
#include<ctime>

#define CEHUA 0
#define MEISHU 1
#define YANFA 2
/*
-公司今天招聘了10个员工(ABCDEFGHIJ),10名员工进入公司之后,需要指派员工在那个部门工作
- 员工信息有:姓名工资组成; 部门分为:策划、美术、研发
–随机给10名员工分配部门和工资
- 通过multimap进行信息的插入key(部门编号) value(员工)
- 分部门显示员工信息
*/


class worker {
public:
	string m_name;
	int m_salary;
	
};

void createWorkers(vector<worker> &v)
{
	string workerSeed = "ABCDEFGHIJ";
	for (int i = 0; i < workerSeed.size(); i++)
	{
		worker worker;
		worker.m_name = "员工";
		worker.m_name += workerSeed[i];
		worker.m_salary = rand() % 10000 + 10000; //10000-19999
		v.push_back(worker);
	}
}

void setGroup(vector<worker>& v, multimap<int, worker>&m)
{
	for (vector<worker>::iterator it = v.begin(); it != v.end(); it++)
	{
		int departID = rand() % 3; // 0 1 2 
		//将员工插入分组
		//key部门,value 员工
		//cout << departID <<"姓名" <<it->m_name  << endl;
		m.insert(pair<int, worker>(departID, *it));
	}
}

void showWorkerGroup(multimap<int, worker> &m)
{
	cout << "策划部门" << endl;
	multimap<int, worker>::iterator pos = m.find(CEHUA);
	int count = m.count(CEHUA);
	
	int index = 0;
	for (; pos != m.end() && index < count; pos++, index++)
	{
		cout << "姓名:" << pos->second.m_name << " 工资:" << pos->second.m_salary << endl;
	}
	cout << "------" << endl;
	cout << "美术部门" << endl;

	pos = m.find(MEISHU);
	count = m.count(MEISHU);
	index = 0;
	for (; pos != m.end() && index < count; pos++, index++)
	{
		cout << "姓名:" << pos->second.m_name << " 工资:" << pos->second.m_salary << endl;
	}
	cout << "------" << endl;
	cout << "研发部门" << endl;
	pos = m.find(YANFA);
	count = m.count(YANFA);
	index = 0;
	for (; pos != m.end() && index < count; pos++, index++)
	{
		cout << "姓名:" << pos->second.m_name << " 工资:" << pos->second.m_salary << endl;
	}
	cout << "------" << endl;

}

int main()
{
	srand((unsigned int)time (NULL));

	//1.创建员工
	vector<worker> v;
	createWorkers(v);

	//测试
	/*for (vector<worker>::iterator it = v.begin(); it != v.end(); it++)
	{
		cout << it->m_name << " " << it->m_salary << endl;
	}*/
	//2.员工分组
	multimap<int, worker> m;
	setGroup(v, m);

	//3.分组显示员工
	showWorkerGroup(m);

	system("pause");
	return 0;
}