# Vertical Traversal of a Binary Tree | Aced Aced (formerly Exponent) publishes a public search API over its indexed pages; the guide is at https://www.aced.io/agents/agent-access. Source: https://www.aced.io/questions/5462/vertical-traversal-of-a-binary-tree Source observed: 2026-11-04T22:03:13.520Z Last checked: 2026-11-04T22:03:13.52+00:00 Indexed: 2026-11-05T08:26:26.621+00:00 --- # Vertical Traversal of a Binary Tree We provide this Aced (formerly Exponent) question page for practicing and tracking software-engineering interview questions. The question is categorized under **Data Structures & Algorithms** and is associated with software-engineer interviews at Meta, Oracle, and Amazon. ## Question details - **Reported interviews:** 5 - **Last reported:** a year ago - **Role:** [Software Engineer](https://www.aced.io/questions?role=swe) - **Companies:** [Meta](https://www.aced.io/questions?company=meta-facebook), [Oracle](https://www.aced.io/questions?company=oracle), [Amazon](https://www.aced.io/questions?company=amazon) - **Category:** [Data Structures & Algorithms](https://www.aced.io/questions?type=algorithms) - **Actions:** Mark the question as asked, save it, or submit an answer. Submitting marks the question complete. Detailed company statistics for this question are available through [Upgrade](https://www.aced.io/upgrade?src=questions). ## Interview experiences Four interview experiences are shared for this question. ### Meta — a year ago [Read the full Meta interview experience](https://www.aced.io/experiences/meta-facebook-software-engineer-interview-907e36). **Role:** Software Engineer · Mid Level / L4 > “I got into Meta through a referral, and the recruiter reached out quickly. The process was recruiter chat, then a pre-onsite package with CodeSignal, a live technical screen, and a weird multiple-choice engineering philosophy questionnaire, and then about a month later the onsite with DSA, system design, behavioral, and the AI-enabled coding round. Honestly, Meta gave me the best prep materials of any company I interviewed with: a long prep PDF, portal videos, mock system design resources, and even a practice environment for the AI round. Most of the coding questions were exactly the kind of stuff people tell you to study in the Meta-tagged LeetCode list, so I never felt like they were hiding the ball. I didn't get the offer, and I think the system design round was what sank me because I expected distributed systems and got an API-design style chess problem that I handled in a really unorganized way.” ### Meta — 2 years ago [Read the full Meta interview experience](https://www.aced.io/experiences/meta-facebook-software-engineer-interview-241732). **Role:** Software Engineer · Mid Level / L4 > “I did well on well on very coding question except 1, it was a cyclic sort problem and I actually didn't know cyclic sort at all. After doing the final round, they gave me another chance to another coding round, I again failed at the first question but not the second. So I got rejected” ### Oracle — 2 years ago [Read the full Oracle interview experience](https://www.aced.io/experiences/oracle-software-engineer-interview-c704bc). **Role:** Software Engineer · Entry Level / L3 > “Here's a short version suitable for Exponent: > The Oracle interview process consisted of a recruiter screening, two technical rounds, a system design discussion, and a managerial round. The technical interviews focused on Java, data structures, microservices, databases, and problem-solving. The system design round evaluated scalability, API design, and architectural trade-offs. Interviewers were professional and focused heavily on real-world experience and project discussions. Overall, the process was structured, challenging, and relevant to enterprise software development.” ### Amazon — 3 years ago [Read the full Amazon interview experience](https://www.aced.io/experiences/amazon-software-engineer-interview-8fb13a). **Role:** Software Engineer · Entry Level / L3 > “It was really good as they do seem to care about interview and i had a great time discussing with the interviewer.” ## Community answers No answers have been contributed by the community yet. ## Related questions - [Binary Tree Zigzag Level Order Traversal](https://www.aced.io/questions/7148/implement-zigzag-level-order-binary-tree) - [Invert binary tree.](https://www.aced.io/questions/4737/invert-binary-tree) - [Find Leaves of Binary Tree](https://www.aced.io/questions/7284/find-leaves-binary-tree) ## Related courses ### [Software Engineering Interview Prep](https://www.aced.io/courses/software-engineering) ![Software Engineering Interview Prep](https://images.ctfassets.net/x78yjrjc11pq/4VkuYewBHUFIVUS5oJDW5h/02e833439b1289f25f38f13f81cbdca3/adobe_stock_optimized.jpeg?w=800&h=800&fm=webp&q=75) We help candidates prepare for software-engineering roles at Google, Amazon, Microsoft, Meta, Apple, and other top companies through mock interviews, frameworks, and advice from senior candidates. The course covers data structures, algorithms, system design, people management, behavioral interviews, and more. ### [System Design Interviews](https://www.aced.io/courses/system-design-interviews) ![System Design Interviews](https://images.ctfassets.net/x78yjrjc11pq/78x7miFZFjBCrM5GqftrMJ/2f6d26e632c4e7265c49f6a180227edb/system_design_track_compressed_26ac98a46e__281_29_5be2280f31.jpeg?w=800&h=800&fm=webp&q=75) We teach approaches to current system-design questions across product, infrastructure, and AI domains with in-depth video examples, written breakdowns, reference patterns, and mock interviews featuring senior engineers and managers. ## Submit your answer Use the answer area to submit a response; submitting marks this question complete. --- [Read this page’s summary](https://www.aced.io/agents/api/public/v1/page-tldr?url=https%3A%2F%2Fwww.aced.io%2Fquestions%2F5462%2Fvertical-traversal-of-a-binary-tree&trace=t_679ff9ab98f3) ## Ask a follow-up about this page Need a more specific answer? 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