LLD - Design — Elevator SystemA system assigns elevators but passengers report long waits during peak hours. What is a likely design flaw?AElevators are assigned without considering current load or directionBElevators move too quickly between floorsCElevators have too many buttons insideDElevators use a queue to store requestsCheck Answer
Step-by-Step SolutionSolution:Step 1: Analyze cause of long waits during peak hoursIgnoring load and direction leads to inefficient assignments and longer waits.Step 2: Evaluate other optionsSpeed, button count, or queue usage do not cause long waits directly.Final Answer:Elevators are assigned without considering current load or direction -> Option AQuick Check:Design flaw = Ignoring load and direction [OK]Quick Trick: Consider load and direction for assignments [OK]Common Mistakes:MISTAKESBlaming elevator speedIgnoring load balancingMisunderstanding request storage
Master "Design — Elevator System" in LLD9 interactive learning modes - each teaches the same concept differentlyLearnWhyDeepArchTryChallengeDesignRecallScale
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