Facebook | E4 | London | July 2021 | Reject
Anonymous User
945

Status: 7y experience in product development
Position: SSE
Date: July 2021

Screening
Forgot the exact questions, there were 2. Easy to Medium difficulty

Coding -1
Q1. Choose index of one of max element randomly (uniformly distributed)
1 2 5 5 3 -> index {2,3} chosen uniformly
Q2. Max sum path of Binary Tree

Coding - 2
Q1. Remove min parenthesis to form a valid string
Q2. Find LCA of two given nodes in Binary Tree

Design
Design an Online Programming Judge. Focus on scalability.

Interviewers were not native english speaker and I had a tough time understanding them specially in round 1. Had to ask multiple times exactly what they were trying to say.
I think in round-1, q2, he wanted me to print the path but I calculated the sum instead
Missed one scenario in round-2, q2

Questions were not that difficult and I even prepared well, but missed it :(

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