The interviewer didn't pay attention to my profile and assumed that I didn't have many personal projects to show for, and most of my work was on an ad-hoc basis.

I had a single interview wherein I was asked an algorithmic question and about my open-source contributions at one of the organizations I've contributed to. I was also asked to design a login system and had a brief technical chat about full-stack responsibilities.

I was rejected after this round.

Write a function that takes the root node of a tree and outputs true or false depending on whether that tree is symmetric or not.