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I dont think your solution would work if node 6(sample input) had a child in the left or right. Your solution would just skip 6 altogether and print 7 only.
Tree : Top View
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I dont think your solution would work if node 6(sample input) had a child in the left or right. Your solution would just skip 6 altogether and print 7 only.
That describes a different problem (or different constraints). The other solutions posted here and the editorial can help clarify what is wanted.
https://www.hackerrank.com/challenges/tree-top-view/editorial