门

题目描述

有一个门，门上有三个开关。第一个开关控制着门的锁，第二个开关控制着门的摄像头，第三个开关控制着门的警报。你可以新建一个程序，实现对这个门的控制。门有两种状态：打开（OPEN）和关闭（CLOSED），开关也有两种状态：打开（ON）和关闭（OFF）。下面是开关的控制流程：

1. 如果门的锁是关闭状态（CLOSED），打开开关将门的锁状态更改为打开状态（OPEN），关闭开关将门的锁状态更改为关闭状态（CLOSED）；
2. 如果门的摄像头是关闭状态（OFF），打开开关将门的摄像头状态更改为打开状态（ON），关闭开关将门的摄像头状态更改为关闭状态（OFF）；
3. 如果门的警报是关闭状态（OFF），打开开关将门的警报状态更改为打开状态（ON），关闭开关将门的警报状态更改为关闭状态（OFF）。

程序需要提供以下功能：

1. 在门关闭时锁定门；
2. 在门打开时解锁门；
3. 在门打开时开启摄像头和警报；
4. 在门关闭时关闭摄像头和警报；
5. 判断门的状态；
6. 判断摄像头的状态；
7. 判断警报的状态。

程序应该用一种合适的编程语言编写，并提供一个简单的命令行界面。程序需要使用Git进行版本控制。

解题思路

本题要求完成一个控制门的程序。我们需要定义一个门（door）类，门有三个属性：锁（lock）、摄像头（camera）和警报（alarm）。每个属性都有两种状态：打开（ON）和关闭（OFF）。门还有两种状态：打开（OPEN）和关闭（CLOSED）。我们需要在门中定义方法实现开关的功能，并且定义一个门控制器（door_controller）类用于控制门的开关。

门的属性和状态可以使用枚举类型来定义：

from enum import Enum

class DoorState(Enum):
    OPEN = "OPEN"
    CLOSED = "CLOSED"

class LockState(Enum):
    ON = "ON"
    OFF = "OFF"

class CameraState(Enum):
    ON = "ON"
    OFF = "OFF"

class AlarmState(Enum):
    ON = "ON"
    OFF = "OFF"

然后，我们可以定义门类，门类中包含门的状态、锁、摄像头和警报属性，以及门的开关控制方法：

class Door:
    def __init__(self):
        self.state = DoorState.CLOSED
        self.lock = LockState.OFF
        self.camera = CameraState.OFF
        self.alarm = AlarmState.OFF

    def lock_door(self):
        self.lock = LockState.ON
    
    def unlock_door(self):
        self.lock = LockState.OFF
    
    def turn_on_camera(self):
        self.camera = CameraState.ON
    
    def turn_off_camera(self):
        self.camera = CameraState.OFF
    
    def turn_on_alarm(self):
        self.alarm = AlarmState.ON
    
    def turn_off_alarm(self):
        self.alarm = AlarmState.OFF

门的控制器（door_controller）类用于控制门的开关状态。我们需要定义一个方法来控制门的开关状态：

class DoorController:
    def __init__(self, door):
        self.door = door
    
    def toggle_lock(self):
        if self.door.lock == LockState.OFF:
            self.door.lock_door()
        else:
            self.door.unlock_door()
    
    def toggle_camera(self):
        if self.door.camera == CameraState.OFF:
            self.door.turn_on_camera()
        else:
            self.door.turn_off_camera()
    
    def toggle_alarm(self):
        if self.door.alarm == AlarmState.OFF:
            self.door.turn_on_alarm()
        else:
            self.door.turn_off_alarm()
    
    def get_door_status(self):
        return self.door.state
    
    def get_camera_status(self):
        return self.door.camera
    
    def get_alarm_status(self):
        return self.door.alarm

现在，我们可以使用门控制器类来控制门的状态。例如，我们可以执行以下操作来打开门并开启摄像头和警报：

door = Door()
controller = DoorController(door)
controller.toggle_lock()
controller.toggle_camera()
controller.toggle_alarm()

我们还可以查询门、摄像头和警报的状态：

door_status = controller.get_door_status()
camera_status = controller.get_camera_status()
alarm_status = controller.get_alarm_status()

我们可以将这些函数包装在一个简单的命令行界面中，以便用户可以使用它们。

代码实现

from enum import Enum

class DoorState(Enum):
    OPEN = "OPEN"
    CLOSED = "CLOSED"

class LockState(Enum):
    ON = "ON"
    OFF = "OFF"

class CameraState(Enum):
    ON = "ON"
    OFF = "OFF"

class AlarmState(Enum):
    ON = "ON"
    OFF = "OFF"

class Door:
    def __init__(self):
        self.state = DoorState.CLOSED
        self.lock = LockState.OFF
        self.camera = CameraState.OFF
        self.alarm = AlarmState.OFF

    def lock_door(self):
        self.lock = LockState.ON
    
    def unlock_door(self):
        self.lock = LockState.OFF
    
    def turn_on_camera(self):
        self.camera = CameraState.ON
    
    def turn_off_camera(self):
        self.camera = CameraState.OFF
    
    def turn_on_alarm(self):
        self.alarm = AlarmState.ON
    
    def turn_off_alarm(self):
        self.alarm = AlarmState.OFF

class DoorController:
    def __init__(self, door):
        self.door = door
    
    def toggle_lock(self):
        if self.door.lock == LockState.OFF:
            self.door.lock_door()
        else:
            self.door.unlock_door()
    
    def toggle_camera(self):
        if self.door.camera == CameraState.OFF:
            self.door.turn_on_camera()
        else:
            self.door.turn_off_camera()
    
    def toggle_alarm(self):
        if self.door.alarm == AlarmState.OFF:
            self.door.turn_on_alarm()
        else:
            self.door.turn_off_alarm()
    
    def get_door_status(self):
        return self.door.state
    
    def get_camera_status(self):
        return self.door.camera
    
    def get_alarm_status(self):
        return self.door.alarm

if __name__ == "__main__":
    door = Door()
    controller = DoorController(door)

    print("Welcome to the door controller!")
    print("Type 'help' for a list of commands.")

    while True:
        command = input("> ").strip().lower()

        if command == "help":
            print("Commands:\n\
            lock\t\tlock the door\n\
            unlock\t\tunlock the door\n\
            camera on\tturn on the camera\n\
            camera off\tturn off the camera\n\
            alarm on\t\tturn on the alarm\n\
            alarm off\tturn off the alarm\n\
            status\t\tget the status of the door, camera, and alarm\n\
            quit\t\texit the program\n")
        elif command == "lock":
            controller.toggle_lock()
            print("The door is locked")
        elif command == "unlock":
            controller.toggle_lock()
            print("The door is unlocked")
        elif command == "camera on":
            controller.toggle_camera()
            print("The camera is on")
        elif command == "camera off":
            controller.toggle_camera()
            print("The camera is off")
        elif command == "alarm on":
            controller.toggle_alarm()
            print("The alarm is on")
        elif command == "alarm off":
            controller.toggle_alarm()
            print("The alarm is off")
        elif command == "status":
            door_status = controller.get_door_status()
            camera_status = controller.get_camera_status()
            alarm_status = controller.get_alarm_status()
            print(f"The door is {door_status.value}")
            print(f"The camera is {camera_status.value}")
            print(f"The alarm is {alarm_status.value}")
        elif command == "quit":
            print("Goodbye!")
            break
        else:
            print("Invalid command. Type 'help' for a list of commands.")

代码说明

此代码使用Python实现。DoorState、LockState、CameraState和AlarmState是用于枚举门、锁、摄像头和警报状态的枚举类型。Door类定义了门属性和控制门开关的逻辑。DoorController类用于控制门的开关，并提供查询门、摄像头和警报状态的方法。命令行界面可以使用input()函数读取用户输入，然后调用适当的函数来实现门控制器的功能。