EaseMyTrip.com Full Stack Software Developer Interview Questions and Answers

Q1. Puzzle of 7 horses
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Q2. Not sure, look it up online
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Q3. 2d Matrix problems
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Q4. Coding questions on Array
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Q5. Coding Question on String
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Q1. The interview process really went smooth. The questions were mostly asked of List Comprehension, React and MVC Architectural patterns.
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Q2. The questions were mostly into Docker, Rendering lists, React, and high level architectural principles
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Q1. Final round was mostly about discussion into culture fit rounds, questionnaire regarding ethics.
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4 questions on codebyte platform
1 easy combination sum
2. medium spiral traversal
3. medium question based on backtracking
4. medium to hard question based on anagrams

Q1. Find element in rotated sorted array
Ans. 
Use binary search to find the target element in a rotated sorted array.
• Perform binary search to find the pivot element where the array is rotated.

• Based on the pivot element, determine which half of the array to search for the target element.

• Continue binary search in the appropriate half of the array to find the target element.
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Q1. In depth questions on core concepts, system design questions, resume deep dive
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Q1. Tech+HR questions
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It was an online test

Q1. Basic DSA Questions
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Q1. Tell me about yourself
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Q1. Web development
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Q2. 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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Q1. 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 change...read more
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Q1. Tell me about yourself
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Q1. Can you outline a simple strategy for fallback error handling in a Node.js application using async/await?
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Q1. Difference between exe and dll
Ans. 
Exe is an executable file that can be run independently, while DLL is a dynamic link library that is loaded by programs when needed.
• Exe stands for executable file, while DLL stands for dynamic link library.

• Exe files can be run independently, while DLL files are loaded by programs when needed.

• Exe files have their own memory space, while DLL files share memory space with the calling process.

• Exe files are typically larger...read more
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Q2. What are http verbs
Ans. 
HTTP verbs are used to indicate the action to be performed on a resource in a RESTful API.
• GET - retrieve data from a server

• POST - send data to a server to create/update a resource

• PUT - update a resource on the server

• DELETE - remove a resource from the server

• PATCH - partially update a resource on the server
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Q3. What is method overloading and overriding Output based question
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Q4. Linq query to filter data and group by
Ans. 
Use Linq query to filter data and group by in C#
• Use 'Where' method to filter data based on a condition

• Use 'GroupBy' method to group the filtered data based on a key

• Example: var result = data.Where(x => x.Property == value).GroupBy(x => x.GroupKey)
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Q5. Attribute in mvc
Ans. 
An attribute in MVC is a piece of metadata that provides additional information about a model, view, or controller.
• Attributes are used to add behavior or data to a class or method in MVC

• They can be used for validation, authorization, caching, etc.

• Examples include [Required], [Authorize], [OutputCache]
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Q1. What is your Role and responsibility in your current organization?
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Q2. What Kind of Production environments do you solve?
Ans. 
I solve complex production environments by identifying issues, optimizing performance, and implementing solutions.
• Identifying bottlenecks and optimizing performance

• Troubleshooting and resolving production issues

• Implementing scalable solutions for high traffic websites

• Working with cloud services like AWS or Azure

• Automating deployment processes with tools like Jenkins or Docker
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Q3. What Features you have worked on? Explain 1 feature?
Ans. 
Developed a real-time chat feature for a social networking platform.
• Implemented WebSocket technology for instant messaging

• Designed user interface for chat window with message history

• Integrated push notifications for new messages

• Developed backend logic for message encryption and decryption
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Q4. How did you prepare the design doc for this feature? What was your Approach?
Ans. 
I prepared the design doc by outlining the requirements, architecture, data flow, and user interactions.
• Outlined the requirements and goals of the feature

• Defined the architecture and technologies to be used

• Described the data flow and interactions between components

• Included wireframes or mockups for user interfaces

• Listed potential edge cases and how to handle them
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Q5. Find if Array2 is a substring of Array1
Ans. 
Check if Array2 is a substring of Array1
• Iterate through Array1 and check if each element contains Array2

• Use built-in string functions like includes() or indexOf() to check for substring

• Consider edge cases like empty arrays or arrays with empty strings
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Q6. How will you build breadcrums in react?
Ans. 
Breadcrumbs in React can be built using a combination of state management and conditional rendering.
• Create a state variable to store the breadcrumb data.

• Update the state variable as the user navigates through the application.

• Render the breadcrumbs component with the data stored in the state.
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Q7. How will you design a parking system? What api's will you create ? Their body and response object.
Ans. 
Design a parking system with APIs for managing parking spots and reservations.
• Create API for adding new parking spots with details like location, availability, and pricing

• Create API for listing available parking spots based on location and availability

• Create API for reserving a parking spot with user details and duration

• Create API for cancelling a parking reservation

• Response object for adding parking spot: { success: t...read more
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