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The idea was for the AI hosts, each with their own character and experience, to attract a young audience. However, the experiment sparked widespread public outcry: former station journalist Mateusz Demski published an open letter against the "replacement of employees with AI," which was signed by over 23,000 people. As a result, OFF Radio Krakow decided to end the experiment early, "firing" the AI hosts. The editor-in-chief explained that the project helped gather important insights and opinions, but it no longer made sense to continue.

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Python + Django = Web Development

Python + Matplotlib = Data Visualization

Python + Flask = Web Applications

Python + Pygame = Game Development

Python + PyQt = Desktop Applications

Python + TensorFlow = Machine Learning

Python + FastAPI = API Development

Python + Kivy = Mobile App Development

Python + Pandas = Data Analysis

Python + NumPy = Scientific Computing

OOP Interview Questions

1. What do you understand by OOP?
2. Name any seven widely used OOP languages.
3. What is the purpose of using OOPs concepts?
4. What are the four main features of OOPs?
5. Why is OOP so popular?
6. What are the advantages and disadvantages of OOP?
7. What are the limitations of OOPs?
8. What are the differences between object-oriented programming and structural programming?
9. What do you understand by pure object-oriented language? Why is Java not a pure object-oriented programming language?
10. What do you understand by class and object? Also, give an example.
11. What are the differences between class and object?
12. What are the key differences between class and structure?
13. What is the concept of access specifiers? When should we use these?
14. What are the manipulators in OOP and how do they work?
15. What are the rules for creating a constructor?
16. What are the differences between the constructor and the method in Java?
17. How does procedural programming differ from OOP?
18. What are the differences between error and exception?
19. What are the characteristics of an abstract class?
20. Is it possible for a class to inherit the constructor of its base class?
21. Identify which OOPs concept should be used in the following scenario: A group of 5 friends, one boy never gives any contribution when the group goes for the outing. Suddenly a beautiful girl joins the same group. The boy who never contributes is now spending a lot of money for the group.
22. What is composition?
23. What are the differences between copy constructor and assignment operator?
24. What is the difference between Composition and Inheritance?
25. What is constructor chaining?
26. What are the limitations of inheritance?
27. What are the differences between Inheritance and Polymorphism?
28. What is Coupling in OOP and why is it helpful?
29. Name the operators that cannot be overloaded.
30. What is the difference between new and override?
31. Explain overloading and overriding with an example.
32. What is Cohesion in OOP?
33. Give a real-world example of polymorphism.
34. What is the difference between a base class and a superclass?
35. What is data abstraction and how can we achieve data abstraction?
36. What are the levels of data abstraction?
37. What are the types of variables in OOP?
38. Is it possible to overload a constructor?
39. Can we overload the main() method in Java? Also, give an example.
40. Consider the following scenario: If a class Demo has a static block and a main() method. A print statement is present in both. The question is which one will first execute, the static block or the main() method, and why?

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❓How does JSON.stringify() work in JS?

JSON.stringify function: Converts a JavaScript object or values ​​to a JSON string (text formatted according to the current standard)

Arguments:

• Value - This is the main argument that specifies what to convert.

• Replacer (optional) - A function or array to filter properties.

• Spaces (optional) - A number or string to format with indents.

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AI/ML (Daily Schedule) 👨🏻‍💻

Morning:
- 9:00 AM - 10:30 AM: ML Algorithms Practice
- 10:30 AM - 11:00 AM: Break
- 11:00 AM - 12:30 PM: AI/ML Theory Study

Lunch:
- 12:30 PM - 1:30 PM: Lunch and Rest

Afternoon:
- 1:30 PM - 3:00 PM: Project Development
- 3:00 PM - 3:30 PM: Break
- 3:30 PM - 5:00 PM: Model Training/Testing

Evening:
- 5:00 PM - 6:00 PM: Review and Debug
- 6:00 PM - 7:00 PM: Dinner and Rest

Late Evening:
- 7:00 PM - 8:00 PM: Research and Reading
- 8:00 PM - 9:00 PM: Reflect and Plan

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ENJOY LEARNING 👍👍

https://youtu.be/OhKS8n8CZuQ

Best philosophy Channel

1. Core Java Concepts
a. What is the difference between == and equals() method in Java?
b. Explain the concept of immutability. How is String class immutable?
c. How does garbage collection work in Java? What are different garbage collectors?
d. What are the different types of memory areas allocated by JVM?
e. How does hashCode() and equals() work?
f. What is the significance of final, finally, and finalize() in Java?
g. What is volatile keyword in Java?
h. What is the difference between HashMap and ConcurrentHashMap?

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Deloitte Detailed Syllabus

Typical java interview questions sorted by experience


Junior
* Name some of the characteristics of OO programming languages
* What are the access modifiers you know? What does each one do?
* What is the difference between overriding and overloading a method in Java?
* What’s the difference between an Interface and an abstract class?
* Can an Interface extend another Interface?
* What does the static word mean in Java?
* Can a static method be overridden in Java?
* What is Polymorphism? What about Inheritance?
* Can a constructor be inherited?
* Do objects get passed by reference or value in Java? Elaborate on that.
* What’s the difference between using == and .equals on a string?
* What is the hashCode() and equals() used for?
* What does the interface Serializable do? What about Parcelable in Android?
* Why are Array and ArrayList different? When would you use each?
* What’s the difference between an Integer and int?
* What is a ThreadPool? Is it better than using several “simple” threads?
* What the difference between local, instance and class variables?

Mid
* What is reflection?
* What is dependency injection? Can you name a few libraries? (Have you used any?)
* What are strong, soft and weak references in Java?
* What does the keyword synchronized mean?
* Can you have “memory leaks” on Java?
* Do you need to set references to null on Java/Android?
* What does it means to say that a String is immutable?
* What are transient and volatile modifiers?
* What is the finalize() method?
* How does the try{} finally{} works?
* What is the difference between instantiation and initialisation of an object?
* When is a static block run?
* Why are Generics are used in Java?
* Can you mention the design patterns you know? Which of those do you normally use?
* Can you mention some types of testing you know?

Senior
* How does Integer.parseInt() works?
* Do you know what is the “double check locking” problem?
* Do you know the difference between StringBuffer and StringBuilder?
* How is a StringBuilder implemented to avoid the immutable string allocation problem?
* What does Class.forName method do?
* What is Autoboxing and Unboxing?
* What’s the difference between an Enumeration and an Iterator?
* What is the difference between fail-fast and fail safe in Java?
* What is PermGen in Java?
* What is a Java priority queue?
* *s performance influenced by using the same number in different types: Int, Double and Float?
* What is the Java Heap?
* What is daemon thread?
* Can a dead thread be restarted?
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Source: medium.

1. Introduce yourself, and your academic background.
2. Which programming Language is your Favourite?
3. Write a Python program to find the GCD (Greatest Common Divisor) of two
numbers.
4. What are joins in SQL?
5. Explain INNER JOIN and LEFT JOIN.

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Software development is complex, and the fancy names don't help.

Hashing vs. Encryption vs. Encoding


𝗛𝗮𝘀𝗵𝗶𝗻𝗴

This is a one-way process used for data integrity verification.

When you hash data, you get a unique string representing the original data.

It's a one-way street; once you hash something, you can't get the original data back from the hash.

While multiple values can theoretically yield the same hash, well-crafted cryptographic hash functions make such collisions incredibly rare and nearly impossible to compute.

This property makes it perfect for verifying if someone altered the data.

If even one-bit changes in the original data, the hash changes dramatically.


𝗘𝗻𝗰𝗿𝘆𝗽𝘁𝗶𝗼𝗻

This is the real deal when it comes to data security.

It uses algorithms and keys to transform readable data (plaintext) into an unreadable format (ciphertext).

Only those with the correct key can unlock (decrypt) the data and read it.

This process is reversible, unlike hashing.

Encryption is critical for protecting sensitive data from unauthorized access.


𝗘𝗻𝗰𝗼𝗱𝗶𝗻𝗴

This is all about data representation.

It converts data from one format to another, making it easier to interpret and display.

Common formats:

• Base64
• UTF-8
• ASCII

Encoding does NOT provide security! It's for data transmission and storage convenience.


One common use of hashing is for secure password storage.

When you create an account or set a password, the system hashes and stores the password in the database.

During login, the system hashes the provided password and compares it to the stored hash without revealing the password.

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