Why should you care?

Interview readiness is a portfolio of patterns, not one lucky solve.

See it live — copy this example

Run snippets in a .NET console app, LINQPad, or https://dotnetfiddle.net. Write Big O above every solution.

// Template per problem
// Pattern: ...
// Time: O(...) Space: O(...)
public class Solution {
  public int Solve(/*...*/) { /*...*/ }
}

What happened?

• The header forces complexity discipline before coding.
• Follow the steps below — typing the code yourself is the fastest way to learn.

Practice next

1. List your 8 problems.
2. Time-box 25 minutes each.
3. Refactor one to clearer names.
4. Add a graph problem.
5. Add a string DP.

Remember

Patterns transfer across companies. Write Big O first. Explain aloud.

Mock interview day

Friend picks a random pattern.

Outcome: You recognize it in under a minute.