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I was interviewed before Apr 2021.
Round duration - 60 minutes
Round difficulty - Easy
The second round is also written but you need to write programming based on their concept.
Given a positive integer N
, your task is to identify all prime numbers less than or equal to N
.
A prime number is a natural number greater than 1 that has no po...
Identify all prime numbers less than or equal to a given positive integer N.
Iterate from 2 to N and check if each number is prime
Use the Sieve of Eratosthenes algorithm for better efficiency
Optimize by only checking up to the square root of N for divisors
Determine if a given string 'S' is a palindrome, considering only alphanumeric characters and ignoring spaces and symbols.
The string 'S' should be evaluated in a case...
Check if a given string is a palindrome after removing special characters, spaces, and converting to lowercase.
Remove special characters and spaces from the string
Convert the string to lowercase
Check if the modified string is a palindrome by comparing characters from start and end
Round duration - 60 minutes
Round difficulty - Easy
Technical round with questions mainly on Java and OOPS concepts.
Static methods belong to the class itself, while instance methods belong to individual objects of the class.
Static methods are called using the class name, while instance methods are called using object references.
Static methods cannot access instance variables directly, while instance methods can access both static and instance variables.
Static methods are shared among all instances of the class, while instance method...
Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.
Abstract class can have constructors, member variables, and methods with implementation.
Interface can only have abstract methods and constants.
A class can implement multiple interfaces but can only extend one abstract class.
Example: Abstract class - Animal with abstract method 'eat', Interface - Flyable with m
ClassNotFoundException occurs when a class is not found during runtime, while NoClassDefFoundError occurs when a class was found during compilation but not during runtime.
ClassNotFoundException is a checked exception, while NoClassDefFoundError is an Error.
ClassNotFoundException occurs when a class is not found at runtime, usually due to a missing classpath or incorrect class name.
NoClassDefFoundError occurs when a cla...
Error is a serious issue that cannot be handled at runtime, while Exception is a recoverable issue that can be caught and handled.
Error is a subclass of Throwable and is usually caused by the environment or system, such as running out of memory or stack overflow.
Exception is also a subclass of Throwable but is caused by the application code, such as invalid input or file not found.
Errors are unchecked and are not meant...
SerialVersionUID is a unique identifier used by Java to ensure the compatibility of serialized objects.
SerialVersionUID is a static final long variable in a class that implements Serializable interface.
It is used to ensure that the serialized object can be deserialized correctly even if the class definition has changed.
If the SerialVersionUID of the serialized object does not match the one in the class, an InvalidClass...
Requirements for creating an immutable class in Java
Make the class final so it cannot be extended
Make all fields private and final
Do not provide setter methods, only getter methods
Ensure that mutable objects are not returned in getter methods
Override equals() and hashCode() methods for proper comparison
Consider making defensive copies of mutable fields in constructor or getter methods
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.
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I applied via Naukri.com and was interviewed in Mar 2021. There were 3 interview rounds.
Developed a web application for managing customer orders and inventory
Used Java and Spring framework for backend development
Implemented a responsive user interface using HTML, CSS, and JavaScript
Integrated with a relational database for data storage and retrieval
Implemented authentication and authorization features for secure access
Performed unit testing and bug fixing throughout the development process
Reverse Linked List
Pallindrome of String
Flyover building in team with strength
posted on 21 Jan 2025
Easy medium to hard medium
Questions on array , linked list
posted on 26 Feb 2025
I was interviewed before Feb 2024.
General Aptitude Test.
One-one mapping is a relationship between two sets where each element of one set is associated with exactly one element of the other set.
Each element in the first set maps to exactly one element in the second set.
No two elements in the first set map to the same element in the second set.
Example: Mapping employee IDs to employee names in a database.
Inheritance is a concept in object-oriented programming where a class inherits properties and behaviors from another class.
Allows a class to inherit attributes and methods from another class
Promotes code reusability and reduces redundancy
Creates a parent-child relationship between classes
Derived class can override or extend the functionality of the base class
Example: Class 'Car' can inherit from class 'Vehicle' and inh...
posted on 25 Nov 2024
I applied via Campus Placement and was interviewed before Nov 2023. There were 2 interview rounds.
Easy test on 2 ques of coding
posted on 5 Apr 2024
I applied via Campus Placement and was interviewed before Apr 2023. There were 2 interview rounds.
posted on 10 Feb 2025
I was interviewed in Aug 2024.
Aptitude test(Quants+Reasoning+English)
1 Beginner+ 1 Intermediate
posted on 17 Oct 2022
A program to reverse a string
Iterate through the string from end to start and append each character to a new string
Use built-in functions like reverse() or StringBuilder.reverse() in some programming languages
ArrayList is a resizable array while LinkedList is a doubly linked list.
ArrayList is faster for accessing elements while LinkedList is faster for adding or removing elements.
ArrayList uses contiguous memory while LinkedList uses non-contiguous memory.
ArrayList is better for random access while LinkedList is better for sequential access.
Example: ArrayList - List
I applied via Campus Placement and was interviewed before Feb 2020. There were 4 interview rounds.
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