Clearwater Analytics (CWAN) interview questions

I ran into Clearwater at my school's career fair. I'd never heard of them before. After talking with them for a few minutes, they asked me if I'd like to do an on-campus interview the next day. I did. The first interview was with two very friendly guys. They showed me some really messed up Java code and asked me to identify what was wrong with it (a lot.) Then they asked me a math problem. If you can bike 20 mph uphill and 30mph downhill, and you have 1 hour to bike, how far or how long should you ride uphill before turning back. I struggled a little bit here even though this is an easy question, and they were nice about it and helped me out. Finally, they asked me to write a method in java that determines if an int is prime and returns true or false. I was able to solve this one quickly and with a solution that was at least a little bit better than the naive solution (I eliminated multiples of 2). The second interview was a phone interview, a few weeks later. They asked me to write a method to calculate the nth fibonnacci number, and also one that takes an array of ints and returns an array of only the ones that do not repeat. Unfortunately for me, I got interview anxiety and as a result took a very long time to write the fibonnacci method. I got an email back a few days later saying they were pursuing other candidates.

I was contacted by a recruiter through LinkedIn. The phone call with him went well and they scheduled a collabedit.com session. He asked me 3 questions and watched me code up the answers. I reversed the digits in an integer. I don't remember the other 2. That went well and they scheduled me for the 1st round of on-site interviews. The first round consisted of 2 45 minute panels with 2 people. The first one wasn't too bad. I was asked to write a queue using stacks. The next problem was to write a method to check if the sum of 2 values existed in an array. The trick is knowing you need to sort the array first. Then they asked me a sql question in the 5 minutes they had left. The second session they asked me how to print nodes in a binary tree according to the depth. My answer took up the entire time. After than they scheduled me for a 2nd round of interviews. In the first one they asked me to model a logic circuit so I created an And and Or gate. The 2nd panel (of the 2nd round) asked me to model a library system with OO design. The question was purposefully vague and I focused on the database side since that's how begin to design a product. I think this is where the train left the tracks because they specifically asked for classes. After the 2nd interview the recruiter called to let me know my skills didn't match up. Overall the interviewers were nice and the experience was ok. I didn't like that it took nearly 4 weeks! I'd rather just power through all the interviews in a day.