Bajaj Finserv React Developer Interview Questions and Answers

Q1. Diff btwn this and arrow in javascript
Ans. 
The 'this' keyword in JavaScript refers to the current object, while the arrow function does not bind its own 'this'.
• The 'this' keyword in JavaScript refers to the object that is executing the current function.

• Arrow functions do not bind their own 'this' value, instead they inherit the 'this' value from the enclosing lexical context.

• Using 'this' in a regular function can lead to unexpected behavior, especially in neste...read more
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Q2. Diff btwn let, var, const
Ans. 
let, var, and const are all used to declare variables in JavaScript, but they have different scopes and behaviors.
• let is block-scoped and can be reassigned, var is function-scoped and can be reassigned, const is block-scoped and cannot be reassigned

• Using let:

• let x = 10;

• x = 20; // valid

• Using var:

• var y = 5;

• y = 8; // valid

• Using const:

• const z = 15;

• z = 25; // error, cannot reassign const variable
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Q1. Wht is tuple and how it is dif from list
Ans. 
A tuple is an immutable collection of elements, while a list is a mutable collection in Python.
• Tuples are created using parentheses (), while lists are created using square brackets []

• Tuples are immutable, meaning their elements cannot be changed once defined

• Lists are mutable, allowing for elements to be added, removed, or modified

• Tuples are typically used for fixed collections of items, while lists are used for dynami
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Q1. Coin change problem
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Q1. .net related questions
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Q1. Functional knowledge
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Q1. Discussion of salary and position
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Medium level round with moderate tough questions

Q1. Medium of stream of numbers
Ans. 
The medium of a stream of numbers is the value that appears most frequently in the stream.
• Calculate the frequency of each number in the stream

• Keep track of the number with the highest frequency

• Return the number with the highest frequency as the medium
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Q2. Core Java questions
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Q1. What is a Java and how many types are there
Ans. 
Java is a high-level programming language used for developing applications. There are four types of Java: Java SE, Java EE, Java ME, and JavaFX.
• Java is an object-oriented language.

• Java SE (Standard Edition) is used for general-purpose development.

• Java EE (Enterprise Edition) is used for developing enterprise applications.

• Java ME (Micro Edition) is used for developing applications for small devices.

• JavaFX is used for cr...read more
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Q2. Tell the permitted Java type
Ans. 
The permitted Java types include primitive types (int, double, boolean, etc.) and reference types (String, Object, etc.)
• Primitive types are predefined in Java and start with a lowercase letter (e.g., int, double)

• Reference types are created using classes, interfaces, or arrays (e.g., String, Object, int[])

• Java also supports autoboxing, which allows primitive types to be used as reference types (e.g., Integer, Double)
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Q3. Tell the Java coding
Ans. 
Java is a popular programming language used for developing web applications and software.
• Java is an object-oriented language

• It is platform-independent

• Java code is compiled into bytecode

• Java has a vast library of pre-built classes and methods

• Java is used for developing Android apps
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Q1. It was a good technical mostly on the JAVA side.
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Q1. Tell about a time where you had competing demands from stakeholders.
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