qfedu-cpp-level/day9/stl_stack_demo/d2.cpp

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#include <iostream>
#include <stack>
#include <vector>
using namespace std;
class Date
{
// 重载 << 以显示日期
friend ostream &operator<<(ostream &out, const Date &date)
{
out << date.year << "" << date.month << "" << date.day << "";
return out;
}
private:
int year;
int month;
int day;
public:
Date(int y, int m, int d) : year(y), month(m), day(d) {}
public:
bool operator<(const Date &date) const
{
// if (year < date.year)
// {
// return true;
// }
// else if (year == date.year)
// {
// if (month < date.month)
// {
// return true;
// }
// else if (month == date.month)
// {
// if (day < date.day)
// {
// return true;
// }
// }
// }
// return false;
return year < date.year ||
(year == date.year && month < date.month) ||
(year == date.year && month == date.month && day < date.day);
}
bool operator>(const Date &date) const
{
return year > date.year && month > date.month && day > date.day;
}
};
class Worker
{
friend Worker &operator=(const Worker &other);
// {
// if (this != &other)
// {
// name = other.name;
// hire_date = other.hire_date;
// volume = other.volume;
// }
// return *this;
// }
private:
string name; // 姓名
Date hire_date; // 入职日期
double volume; // 业绩
public:
Worker(const string &name, const Date &hire_date, double volume)
: name(name), hire_date(hire_date), volume(volume) {}
Worker(const Worker &other)
{
name = other.name;
hire_date = other.hire_date;
volume = other.volume;
}
~Worker()
{
cout << "析构函数被调用" << endl;
}
public:
void show()
{
cout << "name = " << name << ", hire_date = " << hire_date << ", volume = " << volume << endl;
}
};
Worker &operator=(const Worker &other)
{
name = other.name;
hire_date = other.hire_date;
volume = other.volume;
}
void sortByHireDate(Worker *p, int size)
{
for (int i = 0; i < size - 1; i++)
int min = i;
for (int j = i + 1; j < size; i++)
{
if (p[min].hire_date > p[j].hire_date)
{
min = j;
}
}
if (min != i)
{
swap(p[min], p[i]);
// Worker tmp = p[i]; // 拷贝构造
// p[i] = p[min]; // operator= 重载
// p[min] = tmp;
}
}
void sortByVolume(Worker *p, int size)
{
}
int main()
{
Worker w1("disen", Date(2020, 1, 15), 1000);
Worker w2("zhangsan", Date(2020, 1, 16), 200);
Worker w3("lisi", Date(2020, 2, 17), 400);
Worker w4("wangwu", Date(2020, 2, 18), 900);
Worker w5("zhaoliu", Date(2020, 2, 18), 100);
Worker wrks[] = {w1, w2, w3, w4, w5};
sortByHireDate(wrks, 5); // 先排序
// vector<Worker> vec;
// vec.assign(wrks, wrks + 5);
w1.show();
}