Google

I applied through their website. The process took about two weeks. I had an online code screening; however, I did not know that algorithms were a huge part of the interview process. I had understudied and should have studied more LeetCode.

Everything went smoothly. There were hard questions. People were very nice. Some coding puzzles were not clear how to solve, like a lot of binary tree and graph traversal questions. Some in-depth C++ questions, such as "What is a virtual function?"

The interviewer just asked me to do a short introduction and start to solve a coding problem about a tree. The tree has many children, and I need to print the tree's children nodes with their numbers. The interviewer did not give any hints and said v