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Technical2026-08-16

Diagonal view of a binary tree

AI-Expanded — inferred from the question title, not from the original candidate report

Given a binary tree, return the diagonal view of the tree, which consists of the nodes visible when looking at the tree from the top-right corner. A diagonal is defined as a set of nodes connected by right-child pointers, where each node in the diagonal may also have a left child that initiates a new diagonal line.

Context & Summary

Face-to-face interview (1 hour 30 mins) where the interviewer reviewed the candidate's resume and asked two technical questions.

💻 Coding practice works best on desktop.
Code editors are too cramped on mobile screens.