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32nd Backend Developer Interview Questions and Answers
32nd Backend Developer Interview Experiences
1 interview found
Pinder Singh
I applied via Referral and was interviewed in Jun 2024. There was 1 interview round.
(4 Questions)
- Q1. Two sum array question
- Q2. Working of nodejs
- Q3. Asked about sql queries
- Q4. Asked about mongodb
Interview questions from similar companies
Anonymous
I applied via Naukri.com and was interviewed in Mar 2024. There was 1 interview round.
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Interview Preparation Tips
- DSA
- Core java
- Design Patterns
- Spring Boot
I applied via Company Website and was interviewed in Jan 2024. There was 1 interview round.
Given two soted arrays merge them from a single sorted array with all items in non-decreassing order
I applied via Campus Placement and was interviewed in Oct 2024. There were 3 interview rounds.
Online coding test on hacker rank
(1 Question)
- Q1. Normal DSA question related to array & strings
(1 Question)
- Q1. Medium Level DSA questions form Linked list & Aarrays
I applied via Naukri.com and was interviewed before May 2020. There were 3 interview rounds.
Interview Questionnaire
2 Questions
- Q1. Real life scenarios
- Q2. Keep your mind prepared with some real life scenarios
Interview Preparation Tips
(2 Questions)
- Q1. Java threads concepts and its usage
- Q2. Data structures problems and design quentions
Selected
(1 Question)
- Q1. Human resources is tha set of people who make up the workforce of an organisation, business sector, industry.
(2 Questions)
- Q1. Connected with the partical use of machines, etc. in science and industry
- Q2. Connected with the skills involved in a particular activity or subject
Interview Preparation Tips
I applied via LinkedIn and was interviewed in Apr 2021. There were 4 interview rounds.
Interview Questionnaire
4 Questions
- Q1. 1. Mininum cost to reach the last cell of a 2D matrix. Required moves are only downward or to the right direction
- Ans.
Minimum cost to reach last cell of 2D matrix with only downward or right moves.
Use dynamic programming approach to solve the problem.
Calculate minimum cost for each cell by considering minimum cost of its adjacent cells.
Final answer will be the minimum cost to reach the last cell.
- Q2. Design a Stack that can support getMin functionality. Whenever it calls getMin on stack it should return the min element in the stack.
- Ans.
Design a stack that supports getMin functionality to return the minimum element in the stack.
Create two stacks, one for storing the actual elements and another for storing the minimum elements.
Push elements onto both stacks simultaneously.
When popping an element, pop from both stacks.
To get the minimum element, peek at the top of the minimum stack.
- Q3. Design a TreeSet functionality
- Ans.
TreeSet is a data structure that stores unique elements in sorted order.
TreeSet is implemented using a Red-Black tree
It provides O(log n) time complexity for basic operations like add, remove, and contains
It also provides methods like first(), last(), headSet(), tailSet(), and subSet()
TreeSet can be used to implement priority queues and sorting algorithms
- Q4. Design a ArrayList that supprorts all the existing funtions of a list plus getMax functionality also.
- Ans.
Design an ArrayList with getMax functionality.
Create a custom ArrayList class that extends the existing ArrayList class.
Add a getMax() method that returns the maximum value in the list.
Override the add() method to keep track of the maximum value in the list.
Update the maximum value whenever an element is added or removed from the list.
Interview Preparation Tips
Skills evaluated in this interview
Pratham Meena
Make A node js project or a feature
(2 Questions)
- Q1. Who are you ?
- Q2. Why do you want to join us ?
- Ans.
I am impressed by your innovative projects and collaborative team culture.
I admire your company's commitment to pushing boundaries in technology.
I am excited about the opportunity to work with a talented and diverse team.
Your focus on continuous learning and growth aligns with my career goals.
Interview Preparation Tips
Nikita Khare
(2 Questions)
- Q1. Nodejs promises async await difference
- Ans.
Node.js promises are a way to handle asynchronous operations, while async/await is a syntax for writing asynchronous code in a synchronous manner.
Promises are objects that represent the eventual completion (or failure) of an asynchronous operation.
Async/await is a syntactic sugar built on top of promises, making asynchronous code look more like synchronous code.
Async functions return a promise, which allows you to use ...
- Q2. Nodejs architecture eventloop
Skills evaluated in this interview
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