Cumulus Systems Software Engineer Interview Questions and Answers

Basic java questions

Q1. Explain Linked list implementation and stack
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Linked list is a data structure where each element points to the next element. Stack is a data structure that follows Last In First Out (LIFO) principle.
• Linked list implementation involves creating nodes with data and a pointer to the next node.

• Stack implementation involves pushing elements onto the stack and popping them off in reverse order.

• Example: Linked list - 1 -> 2 -> 3 -> NULL, Stack - push(1), push(2), push(3)...read more
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Q2. Oops concepts in java
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Oops concepts in Java refer to Object-Oriented Programming principles like Inheritance, Encapsulation, Polymorphism, and Abstraction.
• Inheritance: Allows a class to inherit properties and behavior from another class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Polymorphism: Ability of a method to do different things based on the object it is acting upon.

• Abstraction: Hiding the imp...read more
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Q1. What is JPA
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Q2. Write a program to find duplicate elements in the list
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Basic aptitude and coding problems were asked

System design and advanced algorithms were asked

Q1. 3 dsa problem asked
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Covers basics aps around 15 question

DSA based questions from leetcode easy and medium

Q1. What's is dependency tree in maven. What is spring boot. Questions on my resume and my current company work. 1. Create and print Left view of binary tree
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Q2. What is exception handling and indepth on it. Questions about my current company project. Scenario based questions about thread synchronisation. How does java internally deals with synchronise blocks. 1. I...read more
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