The phone screen interview was scheduled three times. The first two times, the interviewer did not call without any notice. For this interview, I had to set aside time as it needed to be done on a computer. This meant I had to be out of the office. That's why I was upset that the interview was cancelled twice without any notice.

There were two interviewers. One did not speak English very well, making it very difficult to understand. In fact, I had to ask them to repeat themselves every time.

The following questions were asked:

1. What is a transaction?

2. Implement a function that modifies a binary tree so that the output is a mirror of the input. * / \

/ \

• *
  
  ->
  

  * / \

/ \

• *
  

1. For a given array, find the maximum size palindrome subset. The subset may not be continuous. For input 1, 2, 4, 5, 1, the answer is 3; the subset is 1, 2, 1.