Lofty Technologies Software Developer Interview Questions and Answers

Asking the dp and tree and other

Q1. Asking the project based question and
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Q1. Some question asking base on cultural base and resume based
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Q1. How is GIL and how python handle multi threading
Ans. 
GIL stands for Global Interpreter Lock in Python, which limits execution of multiple threads at once.
• GIL is a mutex that protects access to Python objects, preventing multiple threads from executing Python bytecodes at once.

• Due to GIL, Python threads are not suitable for CPU-bound tasks but are still useful for I/O-bound tasks.

• To handle multi-threading in Python, one can use multiprocessing module or asynchronous progr...read more
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Q2. Explain How React works under the hood.
Ans. 
React uses a virtual DOM to efficiently update the actual DOM based on changes in state or props.
• React creates a virtual DOM representation of the actual DOM.

• When state or props change, React compares the virtual DOM with the actual DOM to determine the minimal set of changes needed.

• React then updates the actual DOM efficiently to reflect the changes.
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DSA and array with graph skills 2:00 hours , leetcode

Q1. Tell me about yourself
Ans. 
I am a passionate software developer with experience in building web applications using various technologies.
• Experienced in developing web applications using HTML, CSS, JavaScript, and frameworks like React and Angular

• Proficient in backend development with Node.js and databases like MongoDB and MySQL

• Familiar with version control systems like Git and deployment tools like Heroku

• Strong problem-solving skills and ability
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Q2. Why we should considered
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Q1. Difference between comparator and comparison
Ans. 
Comparator is an interface used to compare objects, while comparison is the act of comparing two or more objects.
• Comparator is an interface in Java used to define custom sorting logic for objects.

• Comparison is the process of evaluating the similarities and differences between two or more objects.

• Comparator is used in sorting algorithms like Collections.sort() to define the sorting order.

• Comparison is a general term use...read more
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Q2. Implement run time polymorphism
Ans. 
Run time polymorphism is achieved in object-oriented programming by using virtual functions and pointers.
• Use base class with virtual functions

• Create derived classes that override the virtual functions

• Use pointers of base class type to store objects of derived classes

• Call the virtual functions through the base class pointers to achieve polymorphism
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Q3. What is stack with an example
Ans. 
A stack is a data structure that follows the Last In First Out (LIFO) principle.
• Elements are added and removed from the top of the stack.

• Common operations include push (add element) and pop (remove element).

• Example: Undo functionality in a text editor.
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Hexaware was came to our college placement and our placement staff gave us 3 days coding training and aptitude training and the first round round is aptitude it was a online mcq type you have to pass the aptitude inorder to attend the round 2

Coding test was based on DSA

Q1. What is the work in office
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Q2. What is timings in day
Ans. 
Timings in a day refer to the different periods of time that make up a 24-hour day.
• A day is typically divided into morning, afternoon, evening, and night

• Different cultures may have different ways of dividing a day

• Timings can also refer to specific times for events or activities
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Q1. How much salary per month
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Q2. What is timing in the day
Ans. 
Timing in the day refers to the different periods or divisions of time within a 24-hour cycle.
• Timing in the day includes morning, afternoon, evening, and night.

• It helps in organizing daily activities and scheduling tasks.

• Different cultures may have different names or divisions for timing in the day, such as siesta or tea time.

• Timing in the day can also be represented using the 12-hour or 24-hour clock system.
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Q3. How to procesa I share my details
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Q4. Please tell me the process
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Prepare the basic programming languages like Java,SQL and pseudocodes,computer fundamentals,communication.All the questions will be MCQ type of queries.

Q1. Programming codes and core Java ,SQL related questions.If your resume has some other languages then prepare for it.Always be ready with your resume details and the subject.
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Q2. 1.What is constraints and it's types? 2.what is meant by wrapper class? 3.What is meant by string buffer? 4.Write a program to print number of count of characters in a string and remove duplicates by givin...read more
Ans. 
This interview includes questions related to constraints, wrapper class, string buffer, and programming.
• Constraints are rules that limit the values or types of data that can be entered into a field or table. There are two types of constraints: column-level and table-level constraints.

• Wrapper classes are classes that encapsulate primitive data types and provide methods to manipulate them. For example, Integer is a wrapp...read more
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Q1. 1.Self introduction 2.why should I hire you? 3.Are u want to relocate? 4.what is the reason to join our company?
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