Ocrolus East Intern Interview Questions and Answers

Aptitude test consists of DSA questions and theory questions on Java, SQL and object oriented programming

Q1. Explain Object oriented programming
Ans. 
Object oriented programming is a programming paradigm based on the concept of objects, which can contain data and code.
• OOP focuses on creating objects that interact with each other to solve problems

• Encapsulation, inheritance, and polymorphism are key principles of OOP

• Classes and objects are used to create reusable code and organize data

• Example: In a banking system, a 'Customer' object may have attributes like name and ...read more
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Q2. Explain Design principles
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Design principles are fundamental concepts used to guide the process of designing products or systems.
• Design principles help ensure consistency, usability, and aesthetic appeal in the final product.

• They often include principles such as simplicity, consistency, hierarchy, balance, and emphasis.

• For example, the principle of simplicity in design aims to eliminate unnecessary elements and focus on the essential features.

• Co...read more
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Q3. Solve a dsa questions live
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2 Ds questions. About Linked list ans arrays and some aptitude questions.

Q1. Implement Merge Sort algo
Ans. 
Merge Sort is a divide and conquer algorithm that divides the input array into two halves, sorts them recursively, and then merges the sorted halves.
• Divide the array into two halves

• Recursively sort each half

• Merge the sorted halves back together
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Q2. Two sum problem in optimised form
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The Two Sum problem involves finding two numbers in an array that add up to a specific target.
• Use a hashmap to store the difference between the target and each element in the array.

• Iterate through the array and check if the current element's complement exists in the hashmap.

• Return the indices of the two numbers that add up to the target.
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Q1. Discussion about the projects in resume
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Q2. NoSql Vs Sql , advantages and disadvantages
Ans. 
NoSQL databases are non-relational, flexible, and scalable, while SQL databases are relational, structured, and consistent.
• NoSQL databases are schema-less, allowing for flexibility in data models.

• SQL databases use structured query language for data manipulation and retrieval.

• NoSQL databases are horizontally scalable, making them suitable for big data applications.

• SQL databases are vertically scalable, which can be more...read more
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MVVM was asked and swift questions

Q1. Questions around the concept of SpringBoot, Hibernate and Java
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More questions around springboot and some managerial questions

Q1. Salary discussions and office policies
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2 Codes on Hackerrank

Q1. Questions on Tree
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Q2. Questions on Java
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Q1. Hiring Manager Round
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Q1. Regarding the experience and project work
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DSA medium level questions regarding stack, queue , arrays

Q1. DSA Medium and Low Level
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Q1. What do you know about APIs?
Ans. 
APIs (Application Programming Interfaces) are sets of rules and protocols that allow different software applications to communicate with each other.
• APIs define the methods and data formats that applications can use to request and exchange information.

• They allow developers to access the functionality of a system or service without needing to understand its internal workings.

• Examples of APIs include Google Maps API for i...read more
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