Which of the following is a correct way to assign an elevator to a new request in a multiple elevator system?

easy📝 Architecture Q12 of 15

LLD - Design — Elevator System

AAlways assign the elevator on the ground floor

BAssign the elevator farthest from the request floor regardless of direction

CAssign the elevator closest to the request floor moving in the same direction

DAssign elevators randomly to balance usage

Step-by-Step Solution

Solution:

Step 1: Understand assignment criteria
Elevators should be assigned based on proximity and direction to minimize wait time.
Step 2: Analyze options
Assign the elevator closest to the request floor moving in the same direction matches this logic. Options A, B, and C ignore direction or proximity, causing inefficiency.
Final Answer:
Assign the elevator closest to the request floor moving in the same direction -> Option C
Quick Check:
Closest elevator + direction match = correct assignment [OK]

Quick Trick: Match elevator direction and proximity for assignment [OK]

Common Mistakes:

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