Mathematical Expression Evaluation:?

Short answer: Calculator applications that need to parse and evaluate mathematical expressions like 5 + 3 * 2 can leverage the Interpreter Pattern to handle different operators and operands. Each part of the expression (numbers, operators) is represented as an object that can be evaluated.

Real-world example (ShopNest)

Use a GoF pattern in ShopNest only when it removes duplication or makes a change safer—explain the problem it solves in the interview.

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.