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Tree Data Structure in Javascript
The tree represents hierarchical structures like organization hierarchy charts, file systems, etc. To put it more formally, a tree can be defined recursively (locally) as a collection of nodes (starting at a root node), where each node is a data structure consisting of a value, together with a list of references to nodes (the "children"), with the constraints that no reference is duplicated (i.e., each child has exactly one parent).
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