N-ary Tree Postorder Traversal at Amazon

Easy81.0% acceptance

This problem has 12.5% frequency at Amazon.

Problem Description

Given the `root` of an n-ary tree, return _the postorder traversal of its nodes ' values_. Nary-Tree input serialization is represented in their level order traversal. Each group of children is separated by the null value (See examples)

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Stack Tree Depth-First Search

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Bloomberg Google

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Problem Description

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