Jio Senior Software Development Test Engineer Interview Questions and Answers

Q1. Sort linkedlist
Ans. 
Sort a linked list
• Use merge sort or quick sort for efficient sorting

• Implement a sorting algorithm that works well with linked lists

• Consider the time and space complexity of the sorting algorithm
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Q1. React related topics
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Q2. Java related topics
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Q1. Coin change problem and loop in linked list
Ans. 
Coin change problem involves finding the minimum number of coins required to make a given amount of change. Loop in linked list is a traversal technique.
• Coin change problem can be solved using dynamic programming approach

• Loop in linked list can be implemented using a while loop or a for loop

• Coin change problem can be extended to include finding the actual coins used to make the change

• Loop in linked list can be used to ...read more
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Q1. Valid parenthesis and min stack problem
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Valid parenthesis and min stack problem
• Valid Parenthesis problem involves checking if a given string of parentheses is valid or not

• Min Stack problem involves designing a stack that supports push, pop, top, and retrieving the minimum element in constant time

• Both problems can be solved using stack data structure

• Valid Parenthesis problem can be solved by pushing opening brackets onto the stack and popping them when a clos...read more
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Q1. Show your confidence about tech skills.
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Q1. Salary discussion and Normal HR questions
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General aptitude questions on Cocubes Platform of 60 minutes

Q1. DSA question on strings and linked list
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Q2. Projects and Resume Discussion
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Q3. Puzzle (Two bulbs)
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Q4. OOP concepts - pillars of OOP
Ans. 
The pillars of OOP are encapsulation, inheritance, and polymorphism.
• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Inheritance: Allowing a new class to inherit properties and behavior from an existing class.

• Polymorphism: The ability for objects of different classes to respond to the same message in different ways.
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Q1. Techno-Managerial Round (Discussion on Projects and Resume)
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Q2. Details of previous internships and about the offered role
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Q1. General HR questions about introduction and compensation discussion
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Q1. What is arrow functions
Ans. 
Arrow functions are a concise way to write functions in JavaScript.
• Arrow functions are introduced in ES6.

• They have a shorter syntax compared to traditional function expressions.

• Arrow functions do not have their own 'this' keyword.

• They are best suited for non-method functions.

• Example: const add = (a, b) => a + b;
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Q1. Write code for parenthesis matching
Ans. 
Code to match parentheses in a string
• Use a stack to keep track of opening parentheses

• Iterate through the string and push opening parentheses onto the stack

• When a closing parenthesis is encountered, pop from the stack and check if it matches the closing parenthesis
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Q1. Tell me about Hls ja
Ans. 
HLS stands for HTTP Live Streaming, a protocol used for streaming media over the internet.
• HLS breaks the media content into small chunks and delivers them over HTTP.

• It is widely used for streaming video and audio content on the internet.

• HLS allows adaptive bitrate streaming, where the quality of the video adjusts based on the viewer's network speed.

• Popular streaming services like Netflix and Hulu use HLS for delivering
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Simple aptitude test

Window slider on a stack/queue

Basi aptitude and coding mcq

Q1. What is hashmap
Ans. 
HashMap is a data structure that stores key-value pairs and allows for fast retrieval of values based on keys.
• HashMap is part of the Java Collections framework.

• It uses hashing to store and retrieve elements efficiently.

• Keys in a HashMap must be unique, but values can be duplicated.

• Example: HashMap<String, Integer> map = new HashMap<>();
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