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30+ JSC Golla Engineering Interview Questions and Answers

Updated 14 Jan 2025

Q1. Sort 0 1 2 Problem Statement

Given an integer array arr of size 'N' containing only 0s, 1s, and 2s, write an algorithm to sort the array.

Input:

The first line contains an integer 'T' representing the number of...read more
Ans.

Sort an integer array containing only 0s, 1s, and 2s in linear time complexity.

  • Use three pointers to keep track of the positions of 0s, 1s, and 2s in the array.

  • Iterate through the array and swap elements based on the values encountered.

  • Achieve sorting in a single scan over the array without using any extra space.

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Q2. Cycle Detection in a Singly Linked List

Determine if a given singly linked list of integers forms a cycle or not.

A cycle in a linked list occurs when a node's next points back to a previous node in the list. T...read more

Ans.

Detect if a singly linked list forms a cycle by checking if a node's next points back to a previous node.

  • Traverse the linked list using two pointers, one moving one step at a time and the other moving two steps at a time.

  • If the two pointers meet at any point, there is a cycle in the linked list.

  • If one of the pointers reaches the end of the list (null), there is no cycle.

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Q3. N Queens Problem

Given an integer N, find all possible placements of N queens on an N x N chessboard such that no two queens threaten each other.

Explanation:

A queen can attack another queen if they are in the...read more

Ans.

The N Queens Problem involves finding all possible placements of N queens on an N x N chessboard where no two queens threaten each other.

  • Use backtracking algorithm to explore all possible configurations.

  • Keep track of rows, columns, and diagonals to ensure queens do not attack each other.

  • Generate and print valid configurations where queens are placed safely.

  • Consider constraints and time limit for efficient solution.

  • Example: For N=4, valid configurations are: 0010100000101000 a...read more

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Q4. Balanced Parentheses Combinations

Given an integer N representing the number of pairs of parentheses, find all the possible combinations of balanced parentheses using the given number of pairs.

Explanation:

Con...read more

Ans.

Generate all possible combinations of balanced parentheses for a given number of pairs.

  • Use recursion to generate all possible combinations of balanced parentheses.

  • Keep track of the number of open and close parentheses used in each combination.

  • Return the valid combinations as an array of strings.

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Q5. Ninja and Substrings Problem Statement

Ninja has to determine all the distinct substrings of size two that can be formed from a given string 'STR' comprising only lowercase alphabetic characters. These substrin...read more

Ans.

Find all unique contiguous substrings of size two from a given string.

  • Iterate through the string and extract substrings of size two

  • Use a set to store unique substrings

  • Return the set as an array of strings

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Q6. What Do you know about Real estate Industry?

Ans.

Real estate industry involves buying, selling, and renting properties for residential or commercial purposes.

  • Real estate industry is a crucial part of the economy

  • It involves various professionals such as real estate agents, brokers, appraisers, and property managers

  • The industry is affected by factors such as interest rates, economic conditions, and government policies

  • Real estate can be classified into residential, commercial, industrial, and agricultural properties

  • Examples of...read more

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Q7. What Do you know about Space Selling or Degital Marketing?

Ans.

Space selling or digital marketing refers to the process of selling advertising space on digital platforms to businesses.

  • It involves creating and executing digital marketing campaigns to promote products or services

  • It includes various techniques such as search engine optimization (SEO), social media marketing, email marketing, and content marketing

  • Space selling involves selling advertising space on digital platforms such as websites, mobile apps, and social media platforms

  • It ...read more

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Q8. How magicbricks is better than other portal

Ans.

magicbricks offers a wider range of property listings, advanced search options, and verified listings compared to other portals.

  • magicbricks has a larger database of property listings, providing more options for buyers and renters.

  • The portal offers advanced search filters, making it easier for users to find properties that meet their specific criteria.

  • magicbricks verifies property listings to ensure authenticity and reduce the risk of fraud for users.

  • The platform also provides...read more

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Q9. Tell me the difference between Semantic and Nonsemantic elements

Ans.

Semantic elements provide meaning to the content, while nonsemantic elements are used for styling purposes only.

  • Semantic elements have a clear meaning and purpose in the code, making it easier for search engines and screen readers to understand the content.

  • Nonsemantic elements are used purely for styling purposes and do not provide any additional meaning to the content.

  • Examples of semantic elements include <header>, <footer>, <article>, <nav>, <section>, while examples of non...read more

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Q10. How will you convince me to buy MB

Ans.

I will highlight the unique features and benefits of MB, provide personalized solutions, offer competitive pricing, and ensure exceptional customer service.

  • Highlight the unique features and benefits of MB, such as its advanced technology, reliability, and performance.

  • Provide personalized solutions tailored to the customer's specific needs and preferences.

  • Offer competitive pricing compared to similar products in the market.

  • Ensure exceptional customer service throughout the buy...read more

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Q11. What do you know about real estate market

Ans.

Real estate market refers to the buying and selling of properties, influenced by factors like location, economy, and demand.

  • Real estate market is influenced by factors such as location, economy, and demand

  • Market trends can vary based on region and type of property

  • Investors often look at factors like interest rates and housing supply

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Q12. Guesstimate - Number of shampoo sold in India

Ans.

Approximately 1.5 billion bottles of shampoo are sold in India annually.

  • India has a population of over 1.3 billion people, with a large percentage using shampoo regularly.

  • Assuming an average person uses one bottle of shampoo per month, the estimated number of bottles sold annually is around 1.5 billion.

  • Factors such as income levels, hair type, and cultural practices may affect the usage of shampoo in different regions of India.

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Q13. Longest substring with non repeating characters

Ans.

Find the longest substring in a given string that does not contain any repeating characters.

  • Use a sliding window approach to iterate through the string.

  • Keep track of the characters seen so far using a set.

  • Update the start and end indices of the window to find the longest substring.

  • Return the length of the longest substring.

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Q14. How to pitch for a sale?

Ans.

To pitch for a sale, understand the customer's needs, present a solution, and address any objections.

  • Research the customer and their industry to understand their pain points and needs.

  • Present a solution that meets their specific needs and highlights the benefits.

  • Address any objections or concerns the customer may have.

  • Close the sale by asking for their business and following up with next steps.

  • Use persuasive language and active listening skills to build rapport and trust with...read more

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Q15. Would you be able to audit 35 calls per day?

Ans.

Yes, I am confident in my ability to audit 35 calls per day.

  • I have experience auditing a high volume of calls in my previous role.

  • I am organized and efficient in my work process.

  • I am dedicated to ensuring quality and accuracy in my audits.

  • I am confident in my ability to meet the daily target of 35 calls.

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Q16. How will you justify ROI for builders

Ans.

By demonstrating how our services can increase efficiency, reduce costs, and improve overall project outcomes.

  • Showcase case studies of past projects where our services led to higher profits for builders

  • Highlight the potential cost savings from using our services compared to traditional methods

  • Emphasize the improved project timelines and quality that result from working with us

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Q17. what is string eplain that code

Ans.

A string is a sequence of characters used to represent text.

  • Strings are typically enclosed in quotation marks

  • Strings can contain letters, numbers, symbols, and spaces

  • Strings can be manipulated using various string functions

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Q18. what is array how type of array

Ans.

An array is a data structure that stores a collection of elements of the same type in a contiguous memory location.

  • Arrays can be of different types such as integer arrays, float arrays, or string arrays.

  • Example: string[] names = {"Alice", "Bob", "Charlie"};

  • Arrays in most programming languages are zero-indexed, meaning the first element is at index 0.

  • Arrays allow for efficient access and manipulation of elements based on their index.

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Q19. How would you generate new leads

Ans.

I would generate new leads by utilizing a combination of digital marketing strategies, networking events, and targeted outreach campaigns.

  • Utilize social media platforms to engage with potential leads and drive traffic to the company website

  • Attend industry conferences and networking events to establish connections with potential clients

  • Implement email marketing campaigns to reach out to prospects and nurture leads

  • Utilize search engine optimization (SEO) strategies to improve v...read more

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Q20. How you contribute in growth of MB

Ans.

I contribute to the growth of MB by implementing strategic category management initiatives and driving sales through effective product assortment.

  • Developing and executing category strategies to drive sales and increase market share

  • Analyzing market trends and consumer behavior to identify growth opportunities

  • Collaborating with cross-functional teams to optimize product assortment and pricing

  • Negotiating with suppliers to secure favorable terms and improve margins

  • Implementing pr...read more

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Q21. Applications of various data structures.

Ans.

Data structures are used in various applications like search algorithms, storage systems, and graph algorithms.

  • Search algorithms like binary search use arrays and trees for efficient searching.

  • Storage systems use data structures like hash tables and linked lists for organizing and accessing data.

  • Graph algorithms like Dijkstra's algorithm use graphs and trees for solving complex problems.

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Q22. Show how to sell a product

Ans.

Selling a product involves understanding customer needs, highlighting product benefits, and closing the deal.

  • Understand the customer's needs and pain points

  • Highlight the unique features and benefits of the product

  • Address any objections or concerns the customer may have

  • Create a sense of urgency or scarcity to encourage a purchase

  • Close the deal by asking for the sale

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Q23. what is ai in our life

Ans.

AI plays a significant role in our daily lives, from virtual assistants to personalized recommendations.

  • AI powers virtual assistants like Siri, Alexa, and Google Assistant.

  • AI algorithms are used for personalized recommendations on platforms like Netflix and Amazon.

  • AI is utilized in autonomous vehicles for self-driving capabilities.

  • AI is used in healthcare for medical imaging analysis and drug discovery.

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Q24. What do you know about MB

Ans.

MB is a company that specializes in manufacturing and selling luxury vehicles.

  • MB stands for Mercedes-Benz, a German automobile manufacturer

  • The company produces a range of luxury vehicles including cars, buses, and trucks

  • Mercedes-Benz is known for its innovative technology and safety features

  • The company has a global presence with production facilities and sales offices in various countries

  • Mercedes-Benz is a subsidiary of Daimler AG

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Q25. Sales strategy to show

Ans.

Develop a sales strategy that focuses on building relationships, understanding customer needs, and providing personalized solutions.

  • Identify target market and ideal customer profile

  • Build relationships with potential clients through networking and follow-ups

  • Understand customer needs and pain points to tailor solutions

  • Provide personalized solutions that address specific customer challenges

  • Utilize data and analytics to track performance and adjust strategy accordingly

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Q26. what is useref in react

Ans.

useRef is a hook in React that allows you to create a mutable ref object.

  • useRef is used to access DOM nodes or store mutable values that persist across renders.

  • It can be used to focus an input field, measure the size of an element, or store previous values.

  • Example: const inputRef = useRef(null);

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Q27. Trees bagging vs boosting

Ans.

Trees bagging and boosting are ensemble learning techniques that use multiple decision trees, but with different approaches.

  • Bagging (Bootstrap Aggregating) involves training multiple decision trees independently on different subsets of the training data and then averaging the predictions. Examples include Random Forest.

  • Boosting involves training multiple decision trees sequentially, with each tree correcting the errors of its predecessor. Examples include AdaBoost and Gradien...read more

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Q28. 3- Sale this cabin ?

Ans.

This cabin is a perfect getaway for nature lovers with its serene surroundings and cozy interiors.

  • The cabin is located in a secluded area surrounded by lush greenery.

  • The interiors are designed to provide a warm and comfortable stay.

  • The cabin is equipped with modern amenities like a fireplace, kitchen, and bathroom.

  • The surrounding area offers various outdoor activities like hiking, fishing, and camping.

  • The cabin is perfect for those who want to escape the hustle and bustle of ...read more

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Q29. Why Magicbricks

Ans.

Magicbricks is the leading online real estate platform in India.

  • Magicbricks has a vast database of properties and agents, making it easy for customers to find their desired property.

  • The platform offers various tools and features to help customers make informed decisions, such as property valuation, locality insights, and legal advice.

  • Magicbricks has a user-friendly interface and provides excellent customer support.

  • The platform has a strong reputation and is trusted by million...read more

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Q30. React in deep and project

Ans.

React is a JavaScript library for building user interfaces, commonly used in web development projects.

  • React is a declarative, efficient, and flexible JavaScript library for building user interfaces.

  • It allows developers to create reusable UI components that can be easily composed to build complex user interfaces.

  • React uses a virtual DOM to improve performance by only updating the parts of the actual DOM that have changed.

  • React can be used to build single-page applications, pro...read more

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Q31. Launch modes on android

Ans.

Launch modes on Android determine how a new instance of an activity is associated with the current task.

  • Standard: Creates a new instance of the activity in the task's stack

  • SingleTop: If an instance of the activity already exists at the top of the stack, it will not be recreated

  • SingleTask: Activity is always at the root of the task and no other activities can be on top of it

  • SingleInstance: Similar to SingleTask, but the activity is launched in a new task

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