Inorder vs Preorder Traversal
Learn when to use each pattern and make the right choice in your coding interview.
Quick Answer
Use Inorder when the problem fits inorder pattern
Use Preorder when the problem fits preorder pattern
Side-by-Side Comparison
Inorder
Best For
Various algorithmic problems
Time
Varies
Space
Varies
Preorder
Best For
Various algorithmic problems
Time
Varies
Space
Varies
How to Decide
- Analyze the problem constraints
- Consider time/space trade-offs
- Look for pattern triggers
Practice Both Patterns
Build intuition to recognize which pattern fits. Practice with interactive MCQs in LeetEye.
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