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Mutable data types can be changed after creation, while non-mutable data types cannot be changed.
Mutable data types in Python include lists and dictionaries.
Non-mutable data types in Python include tuples and strings.
Changing a mutable data type will modify the original object, while changing a non-mutable data type will create a new object.
A decorator is a design pattern that allows behavior to be added to individual objects, either statically or dynamically, without affecting the behavior of other objects.
Decorators are functions that take another function and extend its behavior without explicitly modifying it.
They are commonly used in Python to add functionality to existing functions or classes.
Example: Adding logging to a function using a decorator.
I am familiar with design patterns such as Singleton, Factory, Observer, and MVC.
Singleton pattern ensures a class has only one instance and provides a global point of access to it.
Factory pattern creates objects without specifying the exact class of object that will be created.
Observer pattern defines a one-to-many dependency between objects so that when one object changes state, all its dependents are notified and up...
Design a system for a company in hospitality
Implement a centralized reservation system for booking rooms, tables, and other services
Incorporate a customer feedback system to gather reviews and ratings for continuous improvement
Include a staff scheduling and management module to efficiently allocate resources
Integrate a payment gateway for secure transactions and invoicing
Utilize data analytics to track customer prefere...
Implemented threads in a multi-threaded application to improve performance and concurrency.
Implemented threads in a multi-threaded application to handle multiple tasks concurrently
Used threads to improve performance by parallelizing tasks
Implemented threads in a web server to handle multiple client requests simultaneously
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posted on 20 May 2017
I appeared for an interview in May 2017.
Yes, the string class can be extended in most programming languages.
Inheritance can be used to extend the functionality of the string class.
By creating a new class that inherits from the string class, additional methods and properties can be added.
Extending the string class allows for customization and adding specific functionality to strings.
Example: In Python, the string class can be extended by creating a new class ...
Implicit objects in JSP are predefined objects that are available for use without any declaration or initialization.
Implicit objects in JSP include request, response, session, application, out, config, pageContext, page, exception, and others.
These objects provide access to various aspects of the JSP environment and can be used to perform common tasks.
For example, the request object allows access to HTTP request parame...
A hash map is a data structure that uses a hash function to map keys to values.
Hash map stores key-value pairs
It uses a hash function to compute an index for each key
Collisions can occur when two keys hash to the same index
Hash maps provide fast access to values based on their keys
StringBuffer and StringBuilder are both used to manipulate strings, but StringBuffer is thread-safe while StringBuilder is not.
StringBuffer is synchronized, making it safe for use in multi-threaded environments.
StringBuilder is not synchronized, making it faster but not thread-safe.
StringBuffer is preferred when multiple threads are involved, while StringBuilder is preferred for single-threaded scenarios.
Both classes p...
MVC is a software architectural pattern that separates an application into three main components: Model, View, and Controller.
Model represents the data and business logic of the application.
View is responsible for displaying the user interface.
Controller handles user input, updates the model, and interacts with the view.
MVC promotes separation of concerns and modularity in software development.
Example: In a web applica...
Annotations used in RESTful web services
1. @Path - Specifies the URI path for the resource
2. @GET - Specifies that the method handles HTTP GET requests
3. @POST - Specifies that the method handles HTTP POST requests
4. @PUT - Specifies that the method handles HTTP PUT requests
5. @DELETE - Specifies that the method handles HTTP DELETE requests
6. @PathParam - Binds the value of a URI template parameter to a method paramete...
I have a strong background in software engineering and a passion for innovation, making me a valuable asset to HSBC.
I have a proven track record of successfully delivering high-quality software solutions in previous roles.
I am highly skilled in various programming languages and technologies, including Java, Python, and SQL.
I have experience working in agile development environments, allowing me to adapt quickly to chan...
I applied via Campus Placement
A chemical engineer can help Citi by providing expertise in process optimization, risk management, and sustainability.
Optimizing Citi's manufacturing processes to reduce costs and increase efficiency
Developing risk management strategies to ensure compliance with environmental regulations
Implementing sustainable practices to reduce Citi's environmental impact
Providing technical expertise in chemical reactions and materi...
posted on 10 May 2015
Multi tasking, multi processing, and multi programming are different approaches to managing tasks in an operating system.
Multi tasking allows multiple tasks to run concurrently on a single processor.
Multi processing involves multiple processors running tasks simultaneously.
Multi programming allows multiple programs to be loaded into memory and executed concurrently.
Examples of multi tasking operating systems include Wi...
Memory allocation refers to the process of assigning memory to programs during runtime.
Stack allocation is done automatically and is limited in size.
Heap allocation is done manually and is larger in size.
Stack memory is used for local variables and function calls.
Heap memory is used for dynamic memory allocation.
Memory leaks can occur if heap memory is not properly managed.
Use a shared variable and synchronization mechanisms to ensure natural order printing of numbers.
Create two threads, one for printing even numbers and the other for printing odd numbers.
Use a shared variable to keep track of the current number to be printed.
Implement synchronization mechanisms like locks or semaphores to ensure only one thread can access the shared variable at a time.
Each thread should check if it is i...
Printing a matrix in spiral order
Start from the first element and print it
Move in a spiral order towards the center of the matrix
Repeat until all elements are printed
Thread class and Runnable Interface are used for multithreading in Java.
Thread class is a predefined class in Java that provides methods to create and control threads.
Runnable interface is used to define a task that can be executed by a thread.
Thread class implements Runnable interface.
Thread class provides more control over threads than Runnable interface.
Example: Thread t = new Thread(new MyRunnable()); t.start();
Exa...
Linked List is a dynamic data structure while ArrayList is a static data structure.
Linked List is best for frequent insertion and deletion operations.
ArrayList is best for frequent access operations.
Linked List uses more memory than ArrayList.
ArrayList is faster than Linked List for accessing elements.
Use Linked List when you need to frequently add or remove elements from the list.
Use ArrayList when you need to frequen...
I am not interested in a career in investment banking.
I am more interested in a career in software development
I enjoy problem-solving and creating innovative solutions through coding
Investment banking does not align with my passion and skill set
I have chosen to apply to J.P. Morgan because of their reputation, global presence, and opportunities for growth.
J.P. Morgan has a strong reputation in the financial industry.
They have a global presence with offices in multiple countries.
The company offers various opportunities for career growth and development.
J.P. Morgan is known for its innovative technology solutions in the financial sector.
I am impressed by their ...
Yes, I have made a mistake in my previous project.
I underestimated the complexity of a task and ended up missing the deadline.
I failed to properly test a feature, resulting in a bug that affected user experience.
I accidentally deleted an important file without having a backup.
I misunderstood a requirement and implemented a feature incorrectly.
based on 2 interview experiences
based on 8 reviews
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