Duplicate Subtrees | Binary Tree | GFG POTD | C++ | Java | Code Kar Lo

[@akhileshtiwari9218]

nice approach to tackle the problem of same preorder of different subtrees. Thanks for providing the solution!

[@code_kar_lo]

Thanks 🙏❤️

[@amanrawat3194]

sir your videos are amazing. Your teaching style is very good.
Sir can you please launch a series on trees?

[@code_kar_lo]

Thanks a lot. Yes i will make a series in some days. Currently pattern series is going on you can watch that as well

[@aizad786iqbal]

thanks...
1 - we can use set right instead of map?
2 - space kyun add kara.... bina space ke bhi toh same hi chalna chayie ?
note --- one suggestion, please use colors, as sometimes it gets messy..

[@code_kar_lo]

Yes we can use set but i mostly prefer map 😅.
Space i have added just to be in safer side i have said in the video as well that it can work without space as well
Thanks for the suggestions

[@aizad786iqbal]

@@code_kar_lo i tried HashSet, but facing issue in duplicates... i tried to check if answer is present already then don't add but since and stores node and thus address isn't same and contains logic not working on the ans , i use Java

[@code_kar_lo]

Yes if you are using set you the code will complex and you have to do multiple handilations

[@kshitijkamble5816]

bro there is similar q on leetcode try to solve then yo will know why space required

[@KishanSingh-vc3re]

you said its preordere, and then moved on to extreme left.

[@code_kar_lo]

Preorder means first you will add node then left then right and you can see while making the string first i am adding node data then going on left then right

[@devlpr-nitish]

surkiya