I had applied online for a summer internship.

The recruiter reached out to me and scheduled a phone interview.

I got through the first round phone interview. The second round was also a phone interview. It went pretty well, but I did not get an offer.

The interviewers asked some basic questions about my background, projects, etc. Then they spoke a bit about their backgrounds.

The interviewers were friendly and helpful.

Given an array of integers, find three integers a, b, and c such that a + b + c = 0.

Modification: If the array is given in sorted order, can you do it without O(n) space?

Given a large input string, write a function to check if it is a palindrome, according to the following restrictions:

• Lowercase and uppercase characters are considered equal.
• Special characters are ignored.