How to group employees by salary ranges dynamically?

Short answer: How to group employees by salary ranges dynamically? var salaryRanges = employees.GroupBy(e => if (e.Salary < 50000) return "Low"; else if (e.Salary <= 80000) return "Medium"; else return "High"; }); foreach (var group in salaryRanges) Console.WriteLine($"{group.Key} Salary Range:"); foreach (var emp in group) Console.WriteLine($" - {emp.Name} ({emp.Salary})"); How to group employees by salary ranges dynamically?

Real-world example (ShopNest)

A sales report joins orders and customers, then GroupBy(c => c.City) to show revenue per city.

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.