How to Solve Tree Node Problem
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Tree Node
Table: Tree +-------------+------+ | Column Name | Type | +-------------+------+ | id | int | | p_id | int | +-------------+------+ id is the column with unique values for this table...
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Understanding the Tree Node Problem
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Problem Statement
Table: Tree +-------------+------+ | Column Name | Type | +-------------+------+ | id | int | | p_id | int | +-------------+------+ id is the column with unique values for this table. Each row of this table contains information about the id of a node and the id of its parent node in a tree. The given structure is always a valid tree. Each node in the tree can be one of three types: "Leaf": if the node is a leaf node. "Root": if the node is the root of the tree. "Inner": If the node is neither a leaf node nor a root node. Write a solution to report the type of each node in the tree. Return the result table in any order. The result format is in the following example.
Tree Node
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Examples
Example inputExample outputNode 1 is the root node because its parent node is null and it has child nodes 2 and 3. Node 2 is an inner node because it has parent node 1 and child node 4 and 5. Nodes 3, 4, and 5 are leaf nodes because they have parent nodes and they do not have child nodes.
Example inputExample outputIf there is only one node on the tree, you only need to output its root attributes.
Constraints
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