juniorRecursion
Explain Direct vs. Indirect Recursion.
Updated Apr 28, 2026
Short answer
Direct: A calls A. Indirect: A calls B, B calls A.
Deep explanation
Recursion allows for elegant solutions to hierarchical problems. Direct: A calls A. Indirect: A calls B, B calls A. However, it requires careful handling of the stack to prevent memory exhaustion.
Real-world example
Traversing a family tree.
Common mistakes
- Forgetting the base case, leading to infinite recursion.
Follow-up questions
- What is the space complexity?