I met a recruiter at my university career fair and received a call back the very next day. I scheduled my interview for a week later. The position was based in Oregon, and I was interviewed by a senior member of the team. It was a 50-minute Skype interview.

We started with basic questions about my resume and projects, discussed my skill set, and he quickly moved on to coding questions. Everything was pretty simple, but I felt that the interviewer wasn't open to multiple solutions. He seemed to have a specific solution in mind and wouldn't let me proceed until I reached it (though there wasn't a major difference between our approaches).

Here are the questions I was asked:

• Free a Binary Search Tree (BST).
• Implement atoi.
• A logical question followed by code for it: Find the number of trailing zeros in 106!.
• This was an interesting puzzle for which he wanted me to work on and share my results. I did a little bit of work on it and got back to him the next day. He said he liked the solution and suggested a simpler one.

Since then, I've been following up with him weekly, but there has been no response. I feel he could at least tell me that I'm not good enough. I'm really disappointed and have given up. It's been a month now.

1. Free a BST.

2. Implement atoi.

3. Logical question followed by code to the same.

Find the trailing number of 0s in 106!.