20240511，谓词，内建函数对象

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拜托铠甲勇士真的帅好不好！！！

 STL案例2-员工分组

10个员工，指派部门，员工信息（姓名，工资组成，部门：策划，美术，研发），随机分配部门和公司，MULTIMAP插入信息，KEY部门编号，VAL员工，分部门显示员工信息

#include<iostream>
#include<string>
#include<map>
#include<vector>
#include<ctime>
using namespace std;
#define CEHUA 0
#define SHEJI 1
#define KAFA 2class Worker {
public:Worker(string name, int salary) {this->_name = name;this->_sal = salary;}
public:string _name;int _sal;
};
void creatww(vector<Worker>& w) {srand((unsigned int)time(NULL));string nameseed = "ABCDEFGHIJ";for (int i = 0; i < 10; i++) {string name = "员工-";name += nameseed[i];int sal=rand() % 6001 + 7000;Worker p(name, sal);w.push_back(p);}
}
void setgroup(vector<Worker> w,multimap<int, Worker> &mw) {for (vector<Worker>::iterator it = w.begin(); it != w.end(); it++) {//产生随机部门编号int depid = rand() % 3;mw.insert(make_pair(depid, *it));}
}
void showgroup(multimap<int,Worker>&mw) {cout << endl;cout << "group CEHUA:\t" << endl;multimap<int, Worker>::iterator pos = mw.find(CEHUA);int count = mw.count(CEHUA);//统计具体人数int index = 0;for (; pos != mw.end() && index < count; pos++, index++) {//pos->first!=CEHUA不对脑子清醒了再试cout << pos->second._name << " " << pos->second._sal << endl;}cout << endl;cout << "group SHEJI:\t" << endl;pos = mw.find(SHEJI);count = mw.count(SHEJI);//统计具体人数index = 0;for (; pos != mw.end() && index < count; pos++, index++) {cout << pos->second._name << " " << pos->second._sal << endl;}cout << endl;cout << "group KAFA:\t" << pos->first << endl;pos = mw.find(KAFA);count = mw.count(KAFA);//统计具体人数index = 0;for (; pos != mw.end() && index < count; pos++, index++) {cout << pos->second._name << " " << pos->second._sal << endl;}
}
void tst01() {vector<Worker>w;creatww(w);for (vector<Worker>::iterator it = w.begin(); it != w.end(); it++) {cout << it->_name << " " << it->_sal << endl;}cout << endl;multimap<int, Worker>mw;setgroup(w,mw);showgroup(mw);
}
int main() {tst01();system("pause");return 0;
}

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