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OodlesTechnologies React Developer Interview Questions, Process, and Tips
OodlesTechnologies React Developer Interview Experiences
1 interview found
I appeared for an interview in Nov 2021.
(4 Questions)
Round duration - 60 minutes
Round difficulty - Easy
Technical round with questions on React mainly.
- Q1. What are the differences between functional and class components in React?
- Ans.
Functional components are simpler and easier to test, while class components have more features and lifecycle methods.
Functional components are written as JavaScript functions, while class components are written as ES6 classes.
Functional components are stateless and do not have their own internal state, while class components can have state.
Functional components do not have lifecycle methods, while class components hav...
- Q2. What are props in React?
- Ans.
Props are read-only properties passed from a parent component to a child component in React.
Props allow data to be passed down the component tree.
Props are immutable and cannot be modified by the child component.
Props can be used to customize the behavior or appearance of a component.
Props are accessed using the dot notation, like this.props.propName.
Props can be any type of data, including strings, numbers, objects, o
- Q3. What is useState() in React?
- Ans.
useState() is a React hook that allows functional components to manage state.
useState() is used to declare a state variable in a functional component.
It returns an array with two elements: the current state value and a function to update the state.
The initial state value is passed as an argument to useState().
The state can be updated by calling the update function returned by useState().
useState() can be used multiple ...
- Q4. What are custom hooks in React?
- Ans.
Custom Hooks are reusable functions in React that allow you to extract logic from components.
Custom Hooks are functions that start with the word 'use' and can call other Hooks if needed.
They are used to share stateful logic between components without using higher-order components or render props.
Custom Hooks can be used to handle common tasks like fetching data, managing form state, or subscribing to events.
They promot...
(3 Questions)
Round duration - 60 minutes
Round difficulty - Easy
Technical round with questions on Javascript mainly. Some output based questions on Javascript were also discussed.
- Q1. Can you explain hoisting in JavaScript?
- Ans.
Hoisting is a JavaScript behavior where variable and function declarations are moved to the top of their scope.
Variable declarations are hoisted but not their initializations.
Function declarations are fully hoisted.
Hoisting can lead to unexpected behavior if not understood properly.
- Q2. Does a const variable make the value immutable in JavaScript?
- Ans.
No, const does not make the value immutable.
const only makes the variable itself immutable, not the value it holds.
For objects and arrays, const prevents reassignment but allows mutation of properties or elements.
To make a value truly immutable, you can use Object.freeze() or other techniques.
- Q3. What are the states of a promise object in JavaScript?
- Ans.
The states of a promise object are pending, fulfilled, or rejected.
A promise starts in the pending state.
When a promise is resolved, it transitions to the fulfilled state.
If a promise encounters an error, it transitions to the rejected state.
Once a promise is settled (fulfilled or rejected), it cannot transition to any other state.
Round duration - 30 minutes
Round difficulty - Easy
HR round with typical Behavioral problems.
Interview Preparation Tips
Tip 1 : Watch all videos of Akshay Saini on youtube. [Namaste JavaScript]
Tip 2 : Practice some output questions from Namaste JavaScript.
Tip 3 : Basic knowledge of React from any source.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
I appeared for an interview before Mar 2021.
Round duration - 30 minutes
Round difficulty - Medium
This was a MCQ round. 30 ques in 30 mins consisting of difficult quantitative aptitude questions were to be solved.
(2 Questions)
Round duration - 60 minutes
Round difficulty - Medium
In this test round, 2 coding questions were given. Either write the code or pseudo code
- Q1.
N Queens Problem
Given an integer
N, find all possible placements ofNqueens on anN x Nchessboard such that no two queens threaten each other.Explanation:
A queen can attack another queen if they ar...
- Ans.
The N Queens Problem involves finding all possible placements of N queens on an N x N chessboard without threatening each other.
Use backtracking algorithm to explore all possible configurations.
Keep track of rows, columns, and diagonals to ensure queens do not threaten each other.
Generate all valid configurations and print them out.
- Q2.
Sort 0 1 2 Problem Statement
Given an integer array
arrof size 'N' containing only 0s, 1s, and 2s, write an algorithm to sort the array.Input:
The first line contains an integer 'T' representing the n... - Ans.
Sort an array of 0s, 1s, and 2s in linear time complexity.
Use three pointers to keep track of 0s, 1s, and 2s while traversing the array.
Swap elements based on the values encountered to sort the array in-place.
Time complexity should be O(N) and space complexity should be O(1).
(2 Questions)
Round duration - 60 minutes
Round difficulty - Easy
This was a technical round with questions on DSA.
- Q1.
Reverse Words in a String: Problem Statement
You are given a string of length
N. Your task is to reverse the string word by word. The input may contain multiple spaces between words and may have leading o... - Ans.
Reverse words in a string while handling leading, trailing, and multiple spaces.
Split the input string by spaces to get individual words
Reverse the order of the words
Join the reversed words with a single space in between
- Q2.
Circular Linked List Detection
You are provided with the head of a linked list containing integers. Your task is to determine if the linked list is circular.
Note:
- A linked list is considered circula...
- Ans.
Detect if a given linked list is circular by checking if it forms a closed loop.
Traverse the linked list using two pointers, one moving at double the speed of the other.
If the two pointers meet at any point, the linked list is circular.
If the faster pointer reaches the end of the list (NULL), the linked list is not circular.
Round duration - 30 minutes
Round difficulty - Easy
HR round with typical behavioral problems.
Interview Preparation Tips
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
Skills evaluated in this interview
Software Developer Interview Questions & Answers
Incture Technologies
Anonymous
posted on 15 Apr 2024
I applied via Campus Placement
The basic question is related to profit percentage, time and distance
(1 Question)
- Q1. Is the database schema of any type?
- Ans.
Yes, the database schema can be of various types such as relational, hierarchical, network, object-oriented, etc.
Relational database schema is the most common type, using tables to store data with relationships between them.
Hierarchical database schema organizes data in a tree-like structure.
Network database schema allows multiple relationships between records.
Object-oriented database schema stores data as objects with...
Software Developer Interview Questions & Answers
Incture Technologies
Anonymous
posted on 5 Aug 2024
BASIC DSA LIKE ARRAY AND STRING
(2 Questions)
- Q1. System Design for Electric Charger app ?
- Ans.
System design for an electric charger app involves creating a user-friendly interface, integrating with payment systems, and ensuring efficient charging station management.
Design a user-friendly interface for users to locate and reserve charging stations
Integrate with payment systems for seamless transactions
Implement efficient charging station management to monitor availability and maintenance
Consider scalability for ...
- Q2. Design digram for that ?
- Ans.
Design diagram for a software developer role.
Use UML diagrams to show class relationships and interactions
Include components like classes, interfaces, relationships, and methods
Consider using tools like Lucidchart or draw.io for creating the diagram
Interview Preparation Tips
Skills evaluated in this interview
Software Developer Interview Questions & Answers
Incture Technologies
Anonymous
posted on 19 Sep 2024
I applied via Company Website and was interviewed in Aug 2024. There were 2 interview rounds.
Very basic aptitude questions along with few coding questions
(2 Questions)
- Q1. A problem statement was given and we had to provide an optimal approach to design and handle that problem
- Q2. Oops concepts, SQL queries
Software Developer Interview Questions & Answers
Incture Technologies
Anonymous
posted on 1 Aug 2024
(2 Questions)
- Q1. What is the work experience
- Ans.
Work experience refers to the practical knowledge and skills gained from previous employment.
Work experience includes previous jobs, internships, and projects related to the field.
It showcases the candidate's ability to apply theoretical knowledge in real-world scenarios.
Employers look for relevant work experience to assess the candidate's capabilities and fit for the role.
- Q2. What is the data skill set
- Ans.
Data skill set refers to the abilities and knowledge related to handling, analyzing, and interpreting data.
Proficiency in data analysis tools such as SQL, Python, R, or Excel
Understanding of data structures and algorithms
Experience with data visualization techniques like Tableau or Power BI
Knowledge of statistical analysis and machine learning concepts
Ability to clean and preprocess data for analysis
Software Developer Interview Questions & Answers
Incture Technologies
Chinmay Wali
posted on 14 Sep 2023
I applied via Campus Placement and was interviewed in Aug 2023. There were 4 interview rounds.
There was aptitude test in the first round, They were mainly quantitative, English questions..
And we had coding questions (3 questions) and they were medium questions..
(2 Questions)
- Q1. We had given a problem statement, and we had to write down the solution (technical solution) and it was pen and paper based..
- Q2. Emergency traffic signal system, in case of ambulance
(1 Question)
- Q1. They asked mainly based on the system design which we had written and about our projects etc...
Software Developer Interview Questions & Answers
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Anonymous
posted on 28 Oct 2023
It was basic test. online.
2 questions on arrays. online.
The general topic. Be point to point
(1 Question)
- Q1. SQL and Python questions. online. screen sharing
I applied via Campus Placement and was interviewed before Jun 2021. There were 3 interview rounds.
Not hard
(2 Questions)
- Q1. On java sql and related
- Q2. Interview questions on java , SQL and basic queries on joins and coding questions on string manipulation and linked list . Also they ask about trees and graphs.
(1 Question)
- Q1. Common HR questions and related
Interview Preparation Tips
- Java
- SQL
I applied via Approached by Company and was interviewed in Feb 2024. There were 4 interview rounds.
DSA coding 2-3 question
Java, DSA coding, java 8 coding, multithreading
Java8, spring-boot, DSA coding
(1 Question)
- Q1. DSA coding, java 8 coding, spring boot, mysql
Interview Preparation Tips
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