c++笔记 STL 案例_员工分组

#include<iostream>
using namespace std;
#include<vector>
#include<map>
#include<ctime>
#define CEHUA 0
#define MEISHU 1
#define YANFA 2
class Worker {
public:
	string m_name;
	int m_salary;
};
void createWorker(vector<Worker>& v) {
	string nameSeed = "ABCDEFGHIJ";
	for (int i = 0; i < 10; i++) {
		//先构造,后插入
		Worker worker;
		worker.m_name = "员工";		worker.m_name += nameSeed[i];

		worker.m_salary = rand() % 10000 + 10000;   //10000-19999
		//初始化结束,将员工放入容器中
		v.push_back(worker);
	}
}
void setGroup(vector<Worker>& v, multimap<int, Worker>& m) {
		for (vector<Worker>::const_iterator it = v.begin(); it != v.end(); it++) {
			//随机产生部门编号
			int deptId = rand() % 3;   //0 1 2
			//将员工插入到分组中
			m.insert(make_pair(deptId, *it));
		}
}
void showWorkerGroup(multimap<int, Worker>& m) {
	//利用multimap基本性质:自动排序
	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;
	}
}

int main() {
	srand((unsigned int)time(NULL));
	//1.创建员工
	vector<Worker>vWorker;
	createWorker(vWorker);
	//2.员工分组
	multimap<int, Worker>mWorker;
	setGroup(vWorker, mWorker);
	//3.分组显示员工信息
	showWorkerGroup(mWorker);
}

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