Domande di colloquio per Back-end Java Developer presso ZeMoSo

Applied through LinkedIn. Got a call from HR and Mail for Online Assessment. Online Assessment, 1. GET API (Coding) 2. LIS (Leetcode) 3. MCQ's (Tech & Apti) 2nd Rount - Tech Round 1 1. Introduction 2. SOLID 3. Design Pattern 4. Hibernate config file, mapping file 5. DI vs IoC 6. Overloading Vs Overriding 7. Spring Annotations 8. Memory Leaks 9. 2sum (leetcode) 10. Height of BST (leetcode) 3rd Round - Tech Round 2 1. Introduction 2. Sout(10+20+"30"+40+50); 3. Inheritance, gave code asked if anything with the code. 4. Coding - get 2nd heighest salary of employees stored in map using Streams 5. SQL - get customers with their total order amount > 600 6. Singleton Pattern 7. @Qualifier Vs @Primary 8. Memory Model on java application 9. HashMap internal Working, HashSet, HashTable , differences 10. Prev Projects Rejected after tech round - 2.

Pathetic experience. Gave Round1 : Duration 30 min Interviewer wants the DSA optimised solution within 2 minutes of asking question. Just care about the optimised approach. We can't use pen and paper. DSA problem is a journey where we start from brute force and reach to optimised solution.