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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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I appeared for an interview before Sep 2020.
Round duration - 30 minutes
Round difficulty - Easy
It was in the day time. I was asked the programming language of my choice. It was mostly focused on programming fundamentals. I was asked 2 questions based on Data Structures and Algorithms.
A loop in a linked list can be detected using Floyd's Cycle Detection Algorithm.
Use two pointers - slow and fast, where slow moves one step at a time and fast moves two steps at a time.
If there is a loop, the two pointers will eventually meet at some point within the loop.
To detect the start of the loop, reset one pointer to the head and move both pointers one step at a time until they meet again.
Round duration - 30 minutes
Round difficulty - Easy
This round was mostly focused on my resume and projects.
Round duration - 30 minutes
Round difficulty - Easy
It was in the evening. I went to their office in Gurgaon. It was taken by one of the technology director who had a lot of experience.
Do practice a lot of data structures questions as mostly questions in interviews are based on them. Also, do prepare for projects mentioned in your resume and skills which you have mentioned. Coding ninjas has a big hand in making my interview clear as I have taken a course from the coding Ninjas which helped me a lot to make my concepts clear.
Application resume tips for other job seekersKeep it short and crisp. Go through it properly before the interview. Make sure that you haven't put anything in it that can cause you problems during the interview.
Final outcome of the interviewSelectedI applied via Campus Placement and was interviewed before Nov 2021. There were 3 interview rounds.
Moderate level aptitude with basics
Moderate level data structure questions
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...
based on 2 interview experiences
based on 8 reviews
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