Programming Languages
221 articles in this topic
Java Coding Interview Questions: Programs Asked in Service-Company Drives
Prepare the short Java programs that recur in fresher drives. Learn the core string, array, number and collections patterns, then trace an O(n) Two-Sum solution.
Updated 1 Aug 20265 min readJava
OOP in Python: Classes, Inheritance, the MRO Diamond and Dunder Methods for Interviews
Work through Python's MRO diamond and the __eq__ plus __hash__ rule. These two examples explain many of the OOP output questions asked in interviews.
Updated 1 Aug 20265 min readPython
Language Design in Programming Languages: Syntax, Types, Scope and a Worked Evaluation
Trace one expression from source text to a value, then compare the design rules that make scope, typing, evaluation and mutation behave differently.
Updated 31 Jul 20266 min readProgramming Languages Survey
Function Overloading and Default Arguments in C++: Rules and Runnable Examples
Learn why overloading and default arguments are different C++ mechanisms. Compile one invoice program, trace every call, and repair ambiguous code.
Updated 31 Jul 20266 min readC++
Command Line Arguments in C: argc and argv Tutorial with Runnable Examples
Learn how argc and argv carry command line input into a C program, then practise argument tracing, numeric conversion, validation, and common fixes.
Updated 30 Jul 20265 min read509 viewsC
OOPs Concepts in Java: Inheritance, Polymorphism, Abstraction and Encapsulation with Worked Interview Questions
Turn the four OOP pillars into predictable Java behaviour. Trace superclass references, subclass objects, overridden methods, hidden fields and common follow-ups.
Updated 30 Jul 20265 min readJava
String Problems in Python for Coding Rounds: Palindromes, Anagrams and Compression Solved
Python turns common string problems into one-liners, but interviewers usually remove that shortcut next. Learn the Pythonic and manual solutions for three recurring patterns.
Updated 30 Jul 20266 min readPython
HTML Basics: Complete Guide to Tags, Structure and a Worked Web Page
Learn what HTML elements mean, how a valid document fits together, and how to build and audit a complete profile page with fixed, traceable markup.
Updated 29 Jul 20266 min readProgramming Languages Survey
Virtual Functions and VTable in C++: Runtime Dispatch with Runnable Examples
Follow one C++17 shape program from virtual calls to a conceptual VTable trace. Then fix common override, slicing, and destructor mistakes.
Updated 28 Jul 20266 min read58 viewsC++
C Tutorial: The Complete Learning Path from First Program to Pointers and Projects
Learn C in dependency order, from compiling your first program to understanding pointers, allocating memory, reading files, and completing a useful project.
Updated 27 Jul 20266 min readC
JavaScript Interview Questions for Freshers 2026: Core Concepts, the DOM and ES6+
Prepare for JavaScript fresher interviews by reasoning through scope, closures, this, async execution, ES6+ and DOM behaviour. Includes the classic loop-closure trace.
Updated 29 Jul 20266 min readJava
Python Functions Deep Dive: *args, **kwargs, the Mutable Default Trap and LEGB Scope
Trace the shared-list default, unpack extra arguments, and follow Python's LEGB lookup so familiar function snippets stop producing surprising output.
Updated 29 Jul 20265 min readPython