用链式存储写简单的职工管理系统

职工管理系统是一个用于管理员工信息的系统，它可以包括添加、修改、删除和查询等功能。在链式存储中，每个节点都包含一个指向下一个节点的指针，这样可以避免重复存储相同的数据，提高内存利用率。

以下是一个简单的链式存储实现的职工管理系统：

```python

class Employee:

def __init__(self, id, name, age, department):

self.id = id

self.name = name

self.age = age

self.department = department

self.next = None

class EmployeeManager:

def __init__(self):

self.head = None

def add_employee(self, id, name, age, department):

new_employee = Employee(id, name, age, department)

if self.head is None:

self.head = new_employee

else:

current = self.head

while current.next:

current = current.next

current.next = new_employee

def delete_employee(self, id):

if self.head is None:

return "No employees to delete"

if self.head.id == id:

self.head = self.head.next

return "Employee deleted"

current = self.head

while current.next:

if current.next.id == id:

current.next = current.next.next

return "Employee deleted"

current = current.next

return "Employee not found"

def search_employee(self, id):

if self.head is None:

return "No employees to search"

current = self.head

while current:

if current.id == id:

return current

current = current.next

return "Employee not found"

def display_employees():

if self.head is None:

return "No employees to display"

current = self.head

while current:

print("ID:", current.id, "Name:", current.name, "Age:", current.age, "Department:", current.department)

current = current.next

# Example usage:

employee_manager = EmployeeManager()

employee_manager.add_employee(1, "Alice", 30, "HR")

employee_manager.add_employee(2, "Bob", 25, "IT")

employee_manager.display_employees()

employee_manager.delete_employee(1)

employee_manager.display_employees()

```

在这个系统中，我们定义了一个`Employee`类来表示一个职工，它有`id`、`name`、`age`和`department`属性，以及一个指向下一个`Employee`对象的指针。我们还定义了一个`EmployeeManager`类来管理职工信息，它有一个链表头`head`，以及添加、删除、搜索和显示职工的方法。