Tail Recursion optimization in Fibonacci.
Updated Apr 28, 2026
Short answer
Passing the state forward in the recursion to allow O(1) stack frames.
Deep explanation
Intermediate Fibonacci techniques focus on Dynamic Programming. Passing the state forward in the recursion to allow O(1) stack frames.
Real-world example
Caching web service responses to identical queries.
Common mistakes
- Forgetting to pass the memo object in recursive calls.
Follow-up questions
- What is the time complexity with memoization?