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To find the first two maximum numbers, iterate through the data while keeping track of the largest and second largest values.
Initialize two variables, max1 and max2, to hold the maximum and second maximum values.
Iterate through the array of numbers.
For each number, compare it with max1 and max2.
If the current number is greater than max1, update max2 to max1 and then update max1 to the current number.
If the current...
Reversing a string in Java can be done using various methods, including StringBuilder, recursion, and character arrays.
Using StringBuilder: StringBuilder sb = new StringBuilder("Hello"); sb.reverse(); System.out.println(sb.toString()); // Output: olleH
Using a character array: char[] charArray = "Hello".toCharArray(); for (int i = 0; i < charArray.length / 2; i++) { char temp = charArray[i]; charA...
Creating a form in React without any libraries
Use state to manage form data
Use onChange event to update state as user types
Use onSubmit event to handle form submission
Lookup annotation in Spring Boot is used to indicate that a method should be cached for faster retrieval.
Lookup annotation is used in conjunction with @Cacheable annotation to cache the result of a method.
It is commonly used in Spring Boot applications to improve performance by caching frequently accessed data.
Example: @Lookup @Cacheable("books") public List
Memory management in Java refers to the process of allocating and deallocating memory for objects in the Java Virtual Machine (JVM).
Java uses automatic memory management through garbage collection to handle memory allocation and deallocation.
Memory in Java is divided into two main areas: stack memory and heap memory.
Stack memory is used for storing primitive data types and references to objects, while heap memory ...
A thread pool is a collection of worker threads that efficiently execute asynchronous tasks.
Thread pool helps in managing and reusing a pool of threads to execute tasks concurrently.
It improves performance by reducing the overhead of creating new threads for each task.
Thread pool can limit the number of concurrent threads to prevent resource exhaustion.
Examples include Java's Executor framework and .NET's ThreadPo...
HashMap is a key-value pair collection while HashSet is a collection of unique elements.
HashMap stores key-value pairs while HashSet stores unique elements
HashMap allows duplicate values but keys must be unique, HashSet does not allow duplicates
HashMap uses keys to retrieve values, HashSet does not have keys
Program to find duplicates in two lists and print them in notepad
Iterate through each element in the first list and check if it exists in the second list
If a duplicate is found, print it to a notepad file
Use a hash set to store elements from the first list for efficient lookup
Implement a stack using array in a program
Create an array to store the stack elements
Implement push and pop functions to add and remove elements from the stack
Keep track of the top of the stack using a variable
A critical section is a part of a program where shared resources are accessed and must be protected from concurrent access.
Critical sections are used to prevent race conditions and ensure data integrity.
They are typically protected using locks or other synchronization mechanisms.
Only one thread can execute the critical section at a time.
Examples include accessing a shared database, updating a global variable, or m...
I applied via Naukri.com and was interviewed in Jul 2024. There were 3 interview rounds.
HashMap is a key-value pair collection while HashSet is a collection of unique elements.
HashMap stores key-value pairs while HashSet stores unique elements
HashMap allows duplicate values but keys must be unique, HashSet does not allow duplicates
HashMap uses keys to retrieve values, HashSet does not have keys
Lookup annotation in Spring Boot is used to indicate that a method should be cached for faster retrieval.
Lookup annotation is used in conjunction with @Cacheable annotation to cache the result of a method.
It is commonly used in Spring Boot applications to improve performance by caching frequently accessed data.
Example: @Lookup @Cacheable("books") public List
Memory management in Java refers to the process of allocating and deallocating memory for objects in the Java Virtual Machine (JVM).
Java uses automatic memory management through garbage collection to handle memory allocation and deallocation.
Memory in Java is divided into two main areas: stack memory and heap memory.
Stack memory is used for storing primitive data types and references to objects, while heap memory is us...
A thread pool is a collection of worker threads that efficiently execute asynchronous tasks.
Thread pool helps in managing and reusing a pool of threads to execute tasks concurrently.
It improves performance by reducing the overhead of creating new threads for each task.
Thread pool can limit the number of concurrent threads to prevent resource exhaustion.
Examples include Java's Executor framework and .NET's ThreadPool cl...
I applied via Referral and was interviewed in May 2024. There was 1 interview round.
I applied via Campus Placement and was interviewed in Jan 2024. There were 3 interview rounds.
Selection sort is a simple sorting algorithm that repeatedly selects the minimum element from an unsorted portion of the array and swaps it with the first element.
Iterate through the array and find the minimum element
Swap the minimum element with the first element
Repeat the process for the remaining unsorted portion of the array
A critical section is a part of a program where shared resources are accessed and must be protected from concurrent access.
Critical sections are used to prevent race conditions and ensure data integrity.
They are typically protected using locks or other synchronization mechanisms.
Only one thread can execute the critical section at a time.
Examples include accessing a shared database, updating a global variable, or modify...
Questions from C, Java, linux, C++, Sql were asked
I applied via Campus Placement and was interviewed in Jan 2023. There were 5 interview rounds.
First round was aptitude test which include both aptitude (cognitive, logical reasoning,verbal) questions and technical questions related to java advanced java sql and Linux.
I applied via Campus Placement
Online aptitude test was there it was easy basics of logic and maths were asked
Group discussion was a bit hard the topic was advantages and disadvantages of ai in decision making
Java OOPs concept is a programming paradigm that focuses on objects and their interactions.
OOPs stands for Object-Oriented Programming System
It is based on the concepts of classes and objects
Encapsulation, Inheritance, Polymorphism, and Abstraction are the four main pillars of OOPs
Java supports all the OOPs concepts
Example: A class 'Car' can have properties like 'color', 'model', and 'year' and methods like 'start', 's...
I appeared for an interview before Mar 2024, where I was asked the following questions.
Reversing a string in Java can be done using various methods, including StringBuilder, recursion, and character arrays.
Using StringBuilder: StringBuilder sb = new StringBuilder("Hello"); sb.reverse(); System.out.println(sb.toString()); // Output: olleH
Using a character array: char[] charArray = "Hello".toCharArray(); for (int i = 0; i < charArray.length / 2; i++) { char temp = charArray[i]; charArray[...
To find the first two maximum numbers, iterate through the data while keeping track of the largest and second largest values.
Initialize two variables, max1 and max2, to hold the maximum and second maximum values.
Iterate through the array of numbers.
For each number, compare it with max1 and max2.
If the current number is greater than max1, update max2 to max1 and then update max1 to the current number.
If the current numb...
I appeared for an interview before Mar 2024, where I was asked the following questions.
Java is a versatile programming language used for building applications across various platforms.
Java is object-oriented, promoting code reusability and modularity.
It has a rich API and extensive libraries for various functionalities.
Java runs on the Java Virtual Machine (JVM), making it platform-independent.
Example: 'System.out.println("Hello, World!");' prints a message to the console.
Java supports multithreading, al...
I applied via Campus Placement and was interviewed before May 2023. There was 1 interview round.
Easy question were there for aptitude which was used to filter the candidate
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Some of the top questions asked at the 6D Technologies Software Engineer interview -
The duration of 6D Technologies Software Engineer interview process can vary, but typically it takes about less than 2 weeks to complete.
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