Design a Simple Elevator System - Multiple Lifts

What You'll Build

• The system must manage 2-4 elevators within a building, with each elevator capable of accessing all floors.
• Users should be able to request an elevator by pressing up or down buttons on any floor (external requests).
• Users inside an elevator should be able to select their destination floor (internal requests).
• The system should efficiently distribute requests across elevators to minimize wait times and balance load.
• Elevators should optimize their direction (up/down) based on pending requests and current position.
• ...and more