Lowest common ancestor(binary tree)

#1

https://ide.geeksforgeeks.org/5CacF3mgFo
here why do we declare &path in the vector when it is a function argument.it is giving segmentation fault if I declare just path.

#2

Hi @anitagupta1411
which ques are u referring to… if its for LCA then there is no need of maintaining the vectors… unnecessarily space complexity is being increased
and secondly &path is being used because we are passing by reference and applying backtracking (path.pop_back()) if u will pass without reference then it will give error only…

#3

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