Concrete Strategies: ○ Each concrete strategy (BubbleSort, QuickSort) implements the sorting?

Short answer: lgorithm. These algorithms can be tested, optimized, or replaced without ffecting the context or the other algorithms.

Real-world example (ShopNest)

Discount rules are Strategy objects: PercentageOff, FlatOff, BuyOneGetOne—checkout picks one without a huge if/else.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.