Elevator System Design

A simple elevator system implementation in Go that simulates multiple elevators serving multiple floors.

Features

• Multiple elevator support
• Smart elevator selection based on proximity and direction
• Handles both pickup and dropoff requests
• Tracks number of people in each elevator
• Supports up and down movements
• Maximum capacity per elevator

System Components

1. Lift (Elevator)

   • Tracks current floor, direction, and stops
   • Manages pickup and dropoff points
   • Handles movement logic
   • Maximum capacity: 10 people

2. LiftManager

   • Manages multiple elevators
   • Handles new lift requests
   • Selects the most appropriate elevator for each request
   • Coordinates elevator movements

Usage Example

// Initialize system with 6 floors and 2 elevators
manager := NewLiftManager()
manager.Init(6, 2)

// Request elevator from floor 0 to floor 3
elevatorId := manager.RequestNewLift(0, 3)

// Move elevators one tick
manager.Tick()

// Get current state of all elevators
states := manager.GetLiftStates()

API

• RequestNewLift(start, dest int) int: Request an elevator from start floor to destination floor
• Tick(): Move all elevators one step
• GetLiftStates() []string: Get current state of all elevators
• GetNumberOfPeopleOnLift(liftId int) int: Get number of people in specified elevator
• GetLiftsStoppingOnFloor(floor int, dir rune) []int: Get elevators stopping at specified floor

Building and Running

go build
./elevator-design