Vertical Traversal of a Binary Tree

"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."

"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."

"It was really good as they do seem to care about interview and i had a great time discussing with the interviewer."