Infogain Interview Questions and Answers

Q1. Hashmap internal working
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Q2. Equals and hashcode
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Equals and hashCode are crucial for object comparison and collections in Java, ensuring correct behavior in data structures.
• Equals method checks if two objects are logically equivalent. Example: 'a.equals(b)' returns true if 'a' and 'b' are the same.

• HashCode method returns an integer representation of an object. Example: 'a.hashCode()' provides a unique identifier for 'a'.

• Both methods must be overridden together to mai...read more
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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
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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. Basic SAS question
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Q2. Basic Python Questions
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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
Ans. 
Implementing a basic LinkedList from scratch with add and delete methods.
• Define a Node class with data and a reference to the next node.

• Create a LinkedList class to manage the head of the list.

• Implement an add method to insert nodes at the end or beginning.

• Implement a delete method to remove nodes by value or position.

• Consider edge cases like empty list or deleting the head node.
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Q5. Have you worked on the Data Structures
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Q6. Have you worked on the Multithreading
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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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Q9. Difference between the @service vs @Repository
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Q10. Difference between the Arrylist vs Linkedlist
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