Available question text
Given a table of node ids and parent ids forming a valid tree, classify each node as "Root" (p_id is null), "Leaf" (no children, i.e., id never appears as a p_id) or "Inner" (has a parent and at least one child).
Related questions
Continue with questions that share topics or the same question type.
Sources · 1 reference
These records explain where the question appears. A company tag or candidate report does not guarantee a future interview question.
Hello Interview · 1 record
No company association
Leetcode 608. Tree Node
Interview date not specified · 0 source reports
Source snapshot: Nov 12, 2026
View source