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posted on 15 Sep 2022
I applied via Referral and was interviewed before Sep 2021. There were 3 interview rounds.
Questions related to React and nodejs
The given array needs to be flattened to a single-level array.
Iterate through the array elements
If an element is an array, recursively flatten it
If an element is not an array, add it to the result array
Promise is a way to handle asynchronous operations in JavaScript.
Promises represent a value that may not be available yet.
They have three states: pending, fulfilled, and rejected.
Promises can be chained using .then() and .catch() methods.
They help avoid callback hell and make code more readable.
Example: new Promise((resolve, reject) => {...})
Array methods in Javascript are built-in functions that can be used to manipulate arrays.
Some common array methods are push(), pop(), shift(), unshift(), slice(), splice(), concat(), join(), indexOf(), and forEach().
push() adds one or more elements to the end of an array.
pop() removes the last element from an array.
shift() removes the first element from an array.
unshift() adds one or more elements to the beginning of a...
State and props are two important concepts in React for managing data and passing data between components.
State is used to manage data within a component and can be updated using setState() method.
Props are used to pass data from parent component to child component.
State is mutable while props are immutable.
Example:
Example:
Top trending discussions
I applied via Walk-in and was interviewed before Jun 2023. There was 1 interview round.
An interface in software development defines a contract for classes to implement, specifying methods and properties.
Interfaces in programming languages like Java and C# allow for multiple inheritance by defining a set of methods that a class must implement.
Interfaces provide a way to achieve abstraction and polymorphism in object-oriented programming.
Interfaces are used to define common behavior that multiple classes c...
Encapsulation is the concept of bundling data and methods that operate on the data into a single unit.
Encapsulation helps in hiding the internal state of an object and restricting access to it.
It allows for better control over the data by preventing direct access from outside the class.
Encapsulation promotes code reusability and makes the code easier to maintain.
Example: In a class representing a car, the variables lik...
10 apti questions and 10 technical mcq on cpp
posted on 1 Oct 2024
Oops topic and aptitude
I applied via Referral and was interviewed in Sep 2023. There were 3 interview rounds.
Very easy roundand is it a program to implement Parallel Merge Sort and can measure the performance
Coding and decoding reasoning for the shield season is over now I am not sure
I applied via Naukri.com and was interviewed in Mar 2023. There were 2 interview rounds.
OOPs concepts in Java include inheritance, polymorphism, encapsulation, and abstraction.
Inheritance allows a subclass to inherit properties and methods from a superclass.
Polymorphism allows objects to take on multiple forms and behave differently based on their context.
Encapsulation hides the implementation details of an object and only exposes necessary information.
Abstraction allows for the creation of abstract class...
Interfaces define contracts for behavior, while inheritance allows for code reuse and polymorphism.
Interfaces allow for loose coupling and abstraction, enabling multiple implementations of the same behavior.
Inheritance allows for code reuse and extension of existing classes, reducing code duplication.
Polymorphism allows objects of different classes to be treated as if they were of the same class, simplifying code and i
SQL query for joining tables
Use JOIN keyword to combine two or more tables based on a related column
Specify the columns to be selected using SELECT keyword
Use ON keyword to specify the condition for joining the tables
Different types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL OUTER JOIN
Used Java concepts such as inheritance, polymorphism, and exception handling in my project.
Implemented inheritance to create a base class and derived classes with specific functionalities.
Utilized polymorphism to allow objects of different classes to be treated as if they were of the same class.
Implemented exception handling to handle errors and prevent program crashes.
Used interfaces to define a set of methods that a ...
Overloading is having multiple methods with the same name but different parameters. Overriding is having a method in a subclass with the same name and parameters as a method in the superclass.
Overloading is used to provide different ways to call a method with different parameters
Overriding is used to provide a specific implementation of a method in a subclass
Overloading is resolved at compile-time while overriding is r...
I applied via Recruitment Consulltant and was interviewed in May 2024. There were 3 interview rounds.
Logical reasoning and Aptitude
Functions with Pointers and strings concepts
posted on 6 Nov 2015
I applied via Recruitment Consultant and was interviewed before Oct 2020. There were 3 interview rounds.
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