Infogain Interview Questions, Process, and Tips

Q1. Hashmap internal working
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Q2. Equals and hashcode
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Q1. Microservice design pattern
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Microservice design pattern focuses on breaking down a large application into smaller, independent services.
• Each microservice is responsible for a specific function or feature

• Communication between microservices is typically done through APIs

• Microservices can be developed, deployed, and scaled independently

• Examples: Netflix, Amazon, Uber
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Q2. Springboot annotation
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Q1. React lifecycle methods
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Q2. Server side rendering
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Q3. Api integration in react
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Api integration in React involves fetching data from external APIs and displaying it in the application.
• Use fetch or axios to make API calls in React components

• Handle API responses using promises or async/await

• Update component state with fetched data to render it on the UI
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Q4. Custom Pagination
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Custom hooks, redux action, reducer, middleware, array values and count example

JUST BASIC CODING WITH MCQ AND MEETLE PLATFORM

Q1. JUST BASICS LIKE SQL,PYTHON MAINLY OOPS AND BASIC CODE LIKE PALINDROME
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Q1. LIKE MINDTEASING QUESTIONS SITUATION BASED
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Based on SQL , statistics , python , cognitive

Q1. Based on AI/Ml and based on cv
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Q2. Based on projects
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Q1. How to handle toxic work culture?
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Address toxic work culture by open communication, setting boundaries, seeking support, and considering leaving if necessary.
• Open communication with colleagues and management about issues

• Set boundaries to protect your mental and emotional well-being

• Seek support from HR, a mentor, or a therapist if needed

• Consider leaving the toxic work environment if the situation does not improve
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Q2. 5 strength and weakness
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Q1. CSS: Create a triangle using only CSS
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Use CSS to create a triangle shape
• Use border properties to create a triangle shape

• Set the width and height of the element to 0

• Use borders of different colors to create the triangle shape
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Q2. HTML: Change the CSS of a parent element by accessing only it's child element
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Use CSS pseudo-class :hover to change parent element's CSS when child element is hovered
• Use the CSS pseudo-class :hover to target the parent element when the child element is hovered

• Example: .parent:hover .child { /* CSS styles */ }
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Q3. JS: create a calculator function. everytime you call it, it should print the next elem in sequence (condition: shouldn't pass any param) - 5,11,29,83
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Create a calculator function that prints the next element in sequence each time it is called.
• Create a function that keeps track of the current number in the sequence

• Each time the function is called, calculate the next number in the sequence based on the previous number

• Print the next number in the sequence each time the function is called
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Q4. React: create a context and provide it such that the language will be changed on a button click
Ans. 
Create a context in React to change language on button click
• Create a context using createContext() method

• Provide a state for language and a function to change it

• Wrap the components that need access to language context with Context.Provider

• Use useContext hook to access language context in components

• Update language state on button click
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Q1. Tell me about yourself and the project you have done
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Q2. Have you work on the spring boot freamwork
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Q3. Collection framework
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Q4. Write a program to make a Linkedlist, you have to develop the logic for the linkedlist suppose your are the first who is going to invent the linkedlist what would be the apporach how you create the add/del...read more
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Q5. Have you worked on the Data Structures
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Yes, I have worked on various data structures like arrays, linked lists, stacks, queues, trees, and graphs.
• I have implemented algorithms using data structures like sorting, searching, and traversal.

• I have optimized code by choosing the appropriate data structure for the problem.

• I have used data structures in projects to efficiently store and manipulate data.
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Q6. Have you worked on the Multithreading
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Yes, I have experience working on Multithreading in Java.
• Implemented multithreading using Java's Thread class

• Used synchronized keyword to handle thread synchronization

• Utilized Executor framework for managing thread pools
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Q7. Write a program to find the min and max no from the array
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Program to find min and max no from array of strings
• Iterate through the array and compare each element to find min and max

• Use Integer.parseInt() to convert strings to integers for comparison

• Initialize min and max variables with first element of array
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Q8. Difference between the @controller vs @restcontroller
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The @Controller annotation is used to create a controller class in Spring MVC, while @RestController is used to create RESTful web services.
• The @Controller annotation is used to create a controller class in Spring MVC, which is used to handle traditional web requests.

• The @RestController annotation is used to create RESTful web services, which return data in JSON or XML format.

• The @RestController annotation is a special...read more
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Q9. Difference between the @service vs @Repository
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The @Service annotation is used to mark a class as a service, while the @Repository annotation is used to mark a class as a repository.
• The @Service annotation is typically used on service layer classes, which contain business logic.

• The @Repository annotation is typically used on repository classes, which interact with a database or other data source.

• Both annotations are used for component scanning and dependency inject...read more
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Q10. Difference between the Arrylist vs Linkedlist
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ArrayList is implemented using a dynamic array while LinkedList is implemented using a doubly linked list.
• ArrayList provides fast access to elements using index, but slow insertion and deletion.

• LinkedList provides fast insertion and deletion, but slow access to elements.

• Example: ArrayList is suitable for scenarios where random access is required, while LinkedList is suitable for scenarios where frequent insertion and d
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Q1. React component life cycle.
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Q2. Redux, React Hooks, State, Props.
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