Software AG Senior Software Developer interview questions

I got rejected in the first round itself. The interviewer doesn't seem interested at all. asked 2 tech ques and some generic ques from resume. it was hardly 15 mins interview.

First written questions (mostly subjective and some on producer consumer/threads/heap/threadlocal/serialization/enum/interface/collections/sql), post that one face to face. Question in F2F: sort array having all 0, 1 sort array having 0, 1, 2 write class diagram for the products module of ecommerce site write program to find middle element in linked list write program to find index of given element in sorted array