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Interviewer forgot the question he wanted to ask.. then he tried to make statement about the question using wrong words.. The question he asked was - Create a mirror reflection of binary tree - for that he asked - "do I know what is a symmetric tree" I explained him what is symmetric tree and how I can check symmetric tree. Interviewer realized this is not the question he wanted to ask then he asked lets create symmetric (mirror) reflection of a tree. I wrote the code to create mirror reflection of the tree.. I think he remembered the answer for "Invert a binary tree" and argued with me that my code to create a mirror will overwrite left node value and did not understand I am creating new tree (mirror tree) so there is no overwrite. It took 20 minutes of worthless conversation and the interviewer still did not get the simple code I wrote in 2 minutes. The interviewer was PhD - Sr. Staff with 20+ years of experience. I felt so miserable for my luck. I think that is why Google / Facebook still are the most reputed
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Staff Software Engineer

Interviewed at LinkedIn

3.8★
Feb 1, 2020

Interviewer forgot the question he wanted to ask.. then he tried to make statement about the question using wrong words.. The question he asked was - Create a mirror reflection of binary tree - for that he asked - "do I know what is a symmetric tree" I explained him what is symmetric tree and how I can check symmetric tree. Interviewer realized this is not the question he wanted to ask then he asked lets create symmetric (mirror) reflection of a tree. I wrote the code to create mirror reflection of the tree.. I think he remembered the answer for "Invert a binary tree" and argued with me that my code to create a mirror will overwrite left node value and did not understand I am creating new tree (mirror tree) so there is no overwrite. It took 20 minutes of worthless conversation and the interviewer still did not get the simple code I wrote in 2 minutes. The interviewer was PhD - Sr. Staff with 20+ years of experience. I felt so miserable for my luck. I think that is why Google / Facebook still are the most reputed

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