30+ JSC Golla Engineering Interview Questions and Answers

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.

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.

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

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.

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

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

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

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

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

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

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

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.

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.

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

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.

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

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

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.

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

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

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.

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

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.

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

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

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);

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

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

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

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