Dell Technologies Software Engineer interview questions

The whole interview the interviewer debated around the version of frameworks and languages used in my previous projects. Nothing relevant was asked in the interview. The interview lasted around 30 minutes. Later when I checked the version mentioned by interviewer was incorrect.

First Round: the Interviewer asked about the current company and the part where i contributed. Then a simple live coding of merging two sorted array list into 1 sorted array list and also few core java questions. Second Round:It was technical where the interviewer asked coding question of rotating string, ordering an array with left side odd numbers and right side even numbers,Java 8 features. multi threading and Binary tree questions. The interviewer was highly patient. He gave hints during interview to optimize code and gave feedback for the performance