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Jio Platforms Software Engineer Interview Questions and Answers

Updated 22 Aug 2024

Q1. Maximum Sum After Removing K Corner Elements

Given an array arr of 'N' integer elements, your goal is to remove 'K' elements from either the beginning or the end of the array. The task is to return the maximum ...read more

Ans.

Given an array of integers, remove K elements from either end to maximize sum of remaining elements.

  • Iterate through all possible combinations of removing K elements from start and end

  • Calculate sum of remaining elements for each combination

  • Return the maximum sum obtained

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Q2. Sum of Two Elements Equals the Third

Determine if a given array contains a valid triplet of integers where two elements sum up to the third. Specifically, find indices i, j, and k such that i != j, j != k, and ...read more

Ans.

Check if a given array contains a valid triplet where two elements sum up to the third.

  • Iterate through all possible triplets in the array and check if any of the conditions are satisfied.

  • Use nested loops to compare each element with every other element in the array.

  • Handle cases where the elements are not distinct by ensuring i != j, j != k, and i != k.

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Q3. Idempotent Matrix Verification

Determine if a given N * N matrix is an idempotent matrix. A matrix is considered idempotent if it satisfies the following condition:

M * M = M

Input:

The first line contains a si...read more
Ans.

Check if a given matrix is idempotent by verifying if M * M equals M.

  • Calculate the product of the matrix with itself and compare it with the original matrix.

  • If the product equals the original matrix, then it is idempotent.

  • Iterate through the matrix elements to perform the necessary calculations.

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Q4. Difference between spring and spring boot

Ans.

Spring is a framework for building Java applications, while Spring Boot is a tool for quickly creating Spring-based applications.

  • Spring provides a comprehensive framework for building Java applications, including features like dependency injection, AOP, and MVC.

  • Spring Boot is a tool that simplifies the process of creating Spring-based applications by providing auto-configuration and embedded servers.

  • Spring Boot also includes features like health checks, metrics, and externali...read more

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Discover Jio Platforms interview dos and don'ts from real experiences

Q5. What is encapsulation

Ans.

Encapsulation is the process of hiding implementation details and providing a public interface for accessing the functionality.

  • Encapsulation helps in achieving data abstraction and information hiding

  • It prevents direct access to the internal state of an object

  • It allows for better control over the data and prevents unintended modification

  • Example: A class with private variables and public methods to access them

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Q6. What data types in python

Ans.

Python has several built-in data types including integers, floats, strings, booleans, lists, tuples, and dictionaries.

  • Integers are whole numbers, positive or negative

  • Floats are decimal numbers

  • Strings are sequences of characters

  • Booleans are either True or False

  • Lists are ordered collections of items

  • Tuples are ordered, immutable collections of items

  • Dictionaries are unordered collections of key-value pairs

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Q7. Difference between c and c++

Ans.

C++ is an extension of C with object-oriented programming features.

  • C++ supports classes and objects while C does not.

  • C++ has better support for function overloading and templates.

  • C++ has a built-in exception handling mechanism.

  • C++ supports references while C does not.

  • C++ has a standard library that includes many useful functions.

  • C++ is more complex than C and requires more memory.

  • C++ is often used for developing large-scale applications.

  • C is often used for system programming ...read more

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Q8. what are java 8 features

Ans.

Java 8 features include lambda expressions, functional interfaces, streams, and default methods.

  • Lambda expressions allow functional programming in Java

  • Functional interfaces enable the use of lambda expressions

  • Streams provide a concise way to process collections

  • Default methods allow interfaces to have implementation

  • Date and Time API improvements

  • Nashorn JavaScript engine

  • Parallel array sorting

  • Type annotations

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Q9. Past Projects Design

Ans.

Designed a web application for tracking inventory and sales data

  • Utilized MVC architecture for clean code separation

  • Implemented responsive design for mobile compatibility

  • Integrated data visualization tools for easy analysis

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Interview Process at Jio Platforms Software Engineer

based on 7 interviews
2 Interview rounds
Coding Test Round
Technical Round
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