python实现电梯算法

以下是Python模拟简单电梯调度算法的示例代码，其中使用了Python线程、队列、时间延迟等相关操作技巧：

import threading
import time
from queue import Queue

class Elevator:
    def __init__(self, num_floors):
        self.num_floors = num_floors
        self.current_floor = 1
        self.direction = 1 # 1 for up, -1 for down
        self.queue = Queue()
        self.is_running = False

    def add_to_queue(self, floor):
        if floor == self.current_floor:
            print(f"Elevator is already on floor {floor}")
            return
        if floor < 1 or floor > self.num_floors:
            print(f"Invalid floor {floor}")
            return
        self.queue.put(floor)

    def start(self):
        if self.is_running:
            print("Elevator is already running")
            return
        self.is_running = True
        t = threading.Thread(target=self.run)
        t.start()

    def stop(self):
        self.is_running = False

    def run(self):
        while not self.queue.empty():
            next_floor = self.queue.get()
            if next_floor > self.current_floor:
                self.direction = 1
            else:
                self.direction = -1
            while self.current_floor != next_floor:
                self.current_floor += self.direction
                print(f"Elevator is on floor {self.current_floor}")
                time.sleep(1)
            print(f"Elevator has arrived at floor {self.current_floor}")
        self.is_running = False

# 示例代码
elevator = Elevator(10)
elevator.add_to_queue(5)
elevator.add_to_queue(3)
elevator.add_to_queue(8)
elevator.start()
time.sleep(10)
elevator.stop()