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What changes are you trying to make? (e.g. Adding or removing code, refactoring existing code, adding reports)
Finding duplicates in a tree
What did you learn from the changes you have made?
BFS and using a stack to traverse a binary tree
Was there another approach you were thinking about making? If so, what approach(es) were you thinking of?
Recursive approach
Were there any challenges? If so, what issue(s) did you face? How did you overcome it?
How were these changes tested?
VS Code . Running code for given examples
A reference to a related issue in your repository (if applicable)
Checklist