SOTI Test Automation Developer interview questions

The questions asked from me were irrelevant. None of the questions match my profile. Below are the questions: 1. Java array based program to rotate a integer array by skip digit. 2. Multi-threading in Java 3. Artitechture used in Selenium and Maven projects It seams to be basically a Java developer interview rather an automation specific. Being a cpp developer as well, I tried to answer the program logic but i know answer one question won't qualify me for an interview. I don't understand why this was conducted or it was just waste of my time either.