Applied on the Career Fair at our university. Received an email for a phone interview about two weeks later. Tried to arrange a time but failed to get confirmation, and it was finally postponed for a week.

The interview lasted about 50 minutes.

First, the interviewer introduced what the team does nicely. Then, they asked basic questions on C++, OS (pthread), and Network (DNS resolution), followed by two algorithm tests.

Print all the leaves of a binary tree.

Two numbers represented by linked lists, from most significant to lowest. Add them together and generate a new linked list.