Output Mismatch

#1

8 9 7 8 -1 -1 -1 -1 -1 -1 -1
Using the O(N^2) method …Diameter comes out to be 3
Using the O(N) method …Diameter comes out to be 4

#2

hello @ANIKET_DALAL
answer should be same using both the approaches.
if input u have mentioned is in level order.
then 3 is correct answer. check ur O(n) method there might be some implementation mistake.

#3

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