There are two technical phone interviews back-to-back over the span of 2 hours. For each interview, the interviewers first briefly asked about the resume and then started coding tests. They usually expect you will solve two coding questions in each interview, including follow-up questions.

talk about the resume,3 coding questions,one is Nested Integer,one is word distance which we should use at least two methods to solve the problem,and the other one is to find second minimum value in a binary tree.