How do you iterate through a SortedSet<T>?

Short answer: Use a foreach loop which iterates over the elements in sorted ascending order: foreach (var item in sortedSet)

Example code

{ Console.WriteLine(item); }

Real-world example (ShopNest)

When applying a coupon, ShopNest keeps used coupon codes in a HashSet<string> so “already used?” checks stay fast and unique.

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.