Coding Interview Resources

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Typical C++ interview questions sorted by experience Junior: - What are the key features of object-oriented programming in C++? - Explain the differences between public, private, and protected access specifiers in C++. - Distinguish between function overloading and overriding in C++. - Compare and contrast abstract classes and interfaces in C++. - Can an interface inherit from another interface in C++? - Define the static keyword in C++ and its significance. - Is it possible to override a static method in C++? - Explain the concepts of polymorphism and inheritance in C++. - Can constructors be inherited in C++? - Discuss pass-by-reference and pass-by-value for objects in C++. - Compare == and .equals for string comparison in C++. - Explain the purposes of the hashCode() and equals() functions. - What does the Serializable interface do? How is it related to Parcelable in Android? - Differentiate between Array and ArrayList in C++. When would you use each? - Explain the distinction between Integer and int in C++. - Define ThreadPool and discuss its advantages over using simple threads. - Differentiate between local, instance, and class variables in C++. Mid: - What is reflection in C++? - Define dependency injection and name a few libraries. Have you used any? - Explain strong, soft, and weak references in C++. - Interpret the meaning of the synchronized keyword. - Can memory leaks occur in C++? - Is it necessary to set references to null in C++? - Why is a String considered immutable? - Discuss transient and volatile modifiers in C++. - What is the purpose of the finalize() method? - How does the try{} finally{} block work in C++? - Explain the difference between object instantiation and initialization. - Under what conditions is a static block executed in C++? - Why are generics used in C++? - Mention some design patterns you are familiar with. Which do you typically use? - Name some types of testing methodologies in C++. Senior: - Explain how std::stoi (string to integer) works in C++. - What is the "double-check locking" problem, and how can it be solved in C++? - Differentiate between StringBuffer and StringBuilder in C++. - How is StringBuilder implemented to avoid the immutable string allocation problem? - Explain the purpose of the Class.forName method in C++. - Define Autoboxing and Unboxing in C++. - What's the difference between Enumeration and Iterator in C++? - Explain the difference between fail-fast and fail-safe in C++. - What is PermGen in C++? - Describe a Java priority queue. - How is performance influenced by using the same number in different types: Int, Double, and Float? - Explain the concept of the Java Heap. - What is a daemon thread? - Can a dead thread be restarted in C++? ✅ Best Telegram channels to get free coding & data science resources https://t.me/addlist/XYopgGtDUp4zMDkx ENJOY LEARNING 👍👍

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? Source: medium.

PYTHON INTERVIEW QUESTIONS 1 what is python ? 2 why python ? 3 what are advantage of python ? 4 what is pep 8 ? 5. What do you mean by literal ? 6 explain python function ? 7 what is use of break statement ? 8 what is tuple ? 9 python libraries /module ? 10. What is an in operator in python ? 11 why python interpreted ? 12 how is memory managed in python ? 13 python decorator ? 14 global variable / local variable ? 15 what is iterators in python ? 16 what is slicing in python ? 17 what is a dictionary in python ? 18 what is pass in python ? 19 what isinit ? 20 what is self in python ? Most important for Technical round interview.

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