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How would you extend the Parking Strategy Pattern to support electric vehicles needing charging spots?

hard📝 Trade-off Q8 of Q15
LLD - Design — Parking Lot System
How would you extend the Parking Strategy Pattern to support electric vehicles needing charging spots?
ACreate a new strategy that prioritizes charging spots for electric vehicles.
BModify the existing strategy to ignore vehicle type.
CRemove the strategy pattern and hardcode charging spots.
DAssign charging spots randomly to all vehicles.
Step-by-Step Solution
Solution:

  1. Step 1: Identify requirement for electric vehicles

    Electric vehicles need special spots with chargers prioritized.

  2. Step 2: Extend strategy pattern properly

    Create a new strategy that checks vehicle type and assigns charging spots first.

  3. Final Answer:

    Create a new strategy that prioritizes charging spots for electric vehicles. -> Option A

  4. Quick Check:

    Extend strategy for new vehicle needs [OK]
Quick Trick: Add new strategy for special vehicle needs [OK]
Common Mistakes:
MISTAKES
  • Ignoring vehicle type in strategy
  • Hardcoding spots instead of strategy
  • Randomly assigning charging spots

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