Data Structures & Algorithms (DSA)

What problem does this solve?

DSA measures your ability to reason, optimize, and break down problems under constraints.

Core Concepts

• Arrays, Strings
• Hash Maps
• Trees & Graphs
• Heaps
• Recursion & Iteration

How it works internally

Focus on memory, time complexity, and data access patterns.

Trade-offs

• Readability vs performance
• Space vs time

Interview Focus

• Problem-solving patterns
• Optimization from brute force
• Explaining thought process

Common interview questions

• Two Sum variants
• Sliding window problems
• Tree traversal optimizations

Senior Answer Expectation

Clear approach, complexity analysis, and optimization reasoning.