What is a Stack in C#?

Q: What is a Stack in C#?

Short answer: A Stack is a generic collection in C# that stores elements in a Last-In, First-Out (LIFO) order. The last element added is the first one removed Belongs to System.Collections.Generic Real-world use case: Undo operations, browser history, expression evaluation. Example code Stack numbers = new Stack (); numbers.Push(10); numbers.Push(20); // Top of the stack Say this in the interview Define — one clear sentence (the short answer above). Example — relate it to a project like ShopNest or your real work. Trade-off — when you would not use it.

Junior From PDF Collections C# Collections

What is a Stack<T> in C#?

Short answer: A Stack<T> is a generic collection in C# that stores elements in a Last-In, First-Out (LIFO) order. The last element added is the first one removed Belongs to System.Collections.Generic Real-world use case: Undo operations, browser history, expression evaluation.

Example code

Stack<int> numbers = new Stack<int>(); numbers.Push(10); numbers.Push(20); // Top of the stack

Say this in the interview

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

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