Question { 1137 }

What are Python's built-in data structures?

Answer

Lists, dictionaries, sets, and tuples are common built-in data structures.

Question { 1373 }

What is the difference between `deepcopy` and `shallow copy`?

Answer

• Shallow copy: Copies only the pointer, not the actual data.
• Deep copy: Creates a new memory allocation and copies the data.

Question { 829 }

What are list comprehensions in Python?

Answer

List comprehensions provide a concise way to create lists. Example: `[x**2 for x in range(5)]` generates `[0, 1, 4, 9, 16]`.

Question { 808 }

What is the OOPs concept?

Answer

The Object-Oriented Programming System, or OOPs for short, is a paradigm that offers ideas like inheritance, classes, and objects.

Question { 945 }

What are the concepts introduced in OOPs?

Answer

An object is a physical thing with a specific state and behavior. It can be described as a class instance.
A class is a logical entity that specifies the blueprint that may be used to generate or instantiate an object.
An object acquiring all of its parent object's characteristics and actions is referred to as inheritance. It offers the possibility to reuse code.

The idea of polymorphism permits a task to be carried out in various ways. To accomplish polymorphism in Java, we employ method overloading and overriding.
Abstraction is a notion that only displays an application's functionality while concealing its internal workings. Java achieves abstraction through the usage of abstract classes and interfaces.
Encapsulation is a term that describes how data and code are wrapped together into

Question { 855 }

Explain what a Binary Search Tree is.

Answer

Data is efficiently stored and retrieved using a binary search tree.
Nodes with keys less than the node's key value can be found in the left sub-tree.
Nodes with keys larger than or equal to the node's key value can be found in the right sub-tree.

Question { 853 }

Explain Doubly Linked Lists?

Answer

A specific kind of linked list that allows traversal across the data components in both directions is called a doubly linked list.
Every node has two linkages, one to the node next to it and one to the node in front of it, which enables accomplishing this.

Question { 1184 }

What are the key features of C?

Answer

 Simple and efficient
 Portable
 Procedural language
 Rich set of built-in functions and operators
 Low-level access to memory
 Pointer support.

Question { 1184 }

What are the key features of C?

Answer

• Object-Oriented Programming: Encapsulation, Inheritance, Polymorphism.
• Memory management via pointers.
• Support for both high-level and low-level programming.
• Strong type checking.
• STL (Standard Template Library) for reusable components.

Question { 1031 }

What is the difference between int and float?

Answer

 int: Stores integer values (e.g., 1, -10).
 float: Stores floating-point numbers (e.g., 3.14, -2.7).

Question { 940 }

What is the use of the #include directive?

Answer

The #include directive is used to include header files in a program. For example, #include includes the standard input-output library.

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Question { 1192 }

What are the different types of storage classes in C?

Answer

 Auto: Default storage class for local variables.
 Static: Retains variable value between function calls.
 Extern: Refers to global variables used in other files.
 Register: Suggests storing variables in the CPU register.

Question { 869 }

What is the difference between a shallow copy and a deep copy?

Answer

• Shallow Copy: Copies memory addresses. Changes in one object affect the other.
• Deep Copy: Creates a new copy of the actual data, independent of the original.

Question { 855 }

Explain virtual functions in C++.

Answer

• A virtual function is a member function that can be overridden in derived classes. Declared with the virtual keyword in the base class, enabling runtime polymorphism.

Question { 845 }

Explain the concept of inheritance in C++.

Answer

Inheritance allows one class (derived class) to acquire the properties and methods of another class (base class). Types: single, multiple, multilevel, hierarchical, hybrid.