I received an email around a month after I applied through their website. I set up my interview for the following week, but was not certain I would do well since I saw on here that they ask a lot of questions about dynamic programming, which I'm improving on.

The first interview used dynamic programming/recursion; however, I was able to solve it.

The second interview was a question on converting an Excel cell to purely numbers (i.e. "AA" -> 27, "BBB" -> 1406), as well as covering basic data structures and the benefits and downsides to them.

Final interview technical coding question was very simple. However, I was asked tough technical questions about general computer science stuff for an hour, ranging from parallel programming to optimization (stuff on my resume).

The first 10 minutes for every interview was spent on talking to the recruiter, which was great because all of them were very interesting and cool people.

Highly recommend applying as the interview process was very enjoyable, and I look forward to interning with Qualtrics this summer.

Given a matrix that represents a graph, where 1's represent a wall and 0's represent a path, sx and sy which represent the start point, and ex and ey to represent the end point, write an algorithm that can detect whether or not there is a valid path to the exit.

Data structure questions on:

• Linked list
• Array
• Hash map
• Binary tree