管理类 Management

管理类OOD面试题型特点分析

实战OOD面试真题：

• 电梯管理问题 Elevator System
• 停车场问题 Parking lot
• 餐厅管理问题 Restaurant

设计模式讲解 Design Pattern: Singleton

• Elevator
• Gym
• Parking lot
• Restaurant
• Library
• Super market
• Hotel

题目后面都可以接上三个字:“管理员”

设计一个模拟/代替管理员日常工作的系统

Management类常见Use case:

• Reservation
• Serve
• Check out

Parking lot

Clarify

What

1. Parking lot

   考虑多层的Parking lot, 没有错层

2. Vehicle

   考虑三种大小的车

3. Parking Spot

   不考虑残疾人停车位/充电车位

How 规则

1. 如何停车?

   根据车的大小，横向停车

   停车场能够显示空闲位置的个数

2. 收费，免费还是付费?

   根据时间收费

Core Object

有进有出

Use case -> 从管理员角度考虑

1. Reserve
2. Serve
3. Checkout

Class

在设计类图的时候，经常可以使用收据的形式，来保管信息

eg. 图书馆

User Receipt Book

Cases

• Bus / Car / Motorcycle

  N/A

• ParkingLot

  站在管理员的角度想

  • Get available count

    Parking lot shows how many available spots in total

  • Park vehicle

    • Parking lot checks the size of vehicle
    • Parking lot find an available spot for this vehicle
    • Vehicle takes the spot(s)

  • Clear spot

    • Parking lot find the spot to clear
      1. Solution 1: Vehicle保存停的车位
      2. Solution 2: Receipt保存停的车位
    • Update spot to be available
    • Update available count for each level

  • Calculate price

Restaurant

Mangement 类常见use case

Reserve: Serve: Checkout:

How can you change your design to support reservation in your restaurant?