GeeksforGeeks Question · Jul 2025

IBM Interview Experience for Java Developer 2024

Question Details

I had an interview with IBM for the Java Developer role. Here are the questions they asked:

Round 1 Coding TestTwo Data Structures and Algorithms questions with 1 SQL base...

Full Details

I had an interview with IBM for the Java Developer role. Here are the questions they asked:

Round 1 Coding Test Two Data Structures and Algorithms questions with 1 SQL based Question: The stock span problem Flatten a linked list with next and child pointers SQL-based Question: Refer to this will be enough SQL Interview Questions

Round 2 Data Structure and Algorithm Round Again One Data Structure and Algorithm questions with java based questions: Find the common elements of three sorted arrays Java-Based Questions: Refer to this will be enough Java Questions

Round 3 Data Structure and Algorithm Round 2 Again One Data Structure and Algorithm questions with project-based questions: Maximum sum increasing subsequence -- interviewer not happy with my solution and ask for optimal solution at that time I am not able to optimal my solution. Springboot Based Questions: Why Spring Boot over Spring? Can we override or replace the Embedded tomcat server in Spring Boot? What is the difference between @RestController and @Controller in Spring Boot? What is an IOC container? Overall, the last round not went very well as interviewer expecting optimal solution. Got Rejection!

About This Question

This is a reported interview question from a ibm interview for a swe role during the phone screen round reported in 2025.

It covers the following topics: Arrays, Linked List, Sql .