Nodes at a Distance K in a binary tree

#1

I don’t understand this code can you please explain it another way.

#2

@rohit_2425
There is already a video on explanation of this question, i will suggest you to please have a look at it first, then look at this code’s video. I am sure it will be clear then.
If you have any specific doubt after that, then you can ask here again.
Feel free to ask.

#3

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