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Top 50 Interesting Unknown Facts about Programming

Last Updated: 05 August 2025

Learning programming is not just about writing code—it’s about exploring a world filled with creativity, problem-solving, and endless possibilities. As you dive into this ...read more

Computer Science Fundamentals

Picked

GFacts

Does Garbage Collection Guarantee that a Program will not Run Out of Memory?

Last Updated: 23 July 2025

The work of Garbage collection in Java isto automate the process of deleting memory that's no longer in use. But does that mean Java programs are free from memory limit ov...read more

DSA

GFacts

Dynamic Memory Allocation

java-garbage-collection

Easiest Way to Reverse a String

Last Updated: 05 February 2024

Have you wondered which is the easiest way to reverse a string, Imagine you are giving a contest and an algorithm you have made requires reversing a string, you must be aw...read more

Can we improve the performance of a merge sort algorithm?

Last Updated: 18 January 2024

The merge sort, in essence, is a divide-and-conquer algorithm. It breaks down a problem into multiple sub-problems, solves each individually, and finally combines these su...read more

DSA

GFacts

Most Efficient Way to Find a Missing Number in an array

Last Updated: 24 May 2024

Have you wondered which is the most efficient way for a popular problem to find a missing Number? well in this post we are going to discuss this phenomenon in brief. First...read more

DSA

GFacts

Bitwise-XOR

Why can templates only be implemented in the header file?

Last Updated: 11 December 2023

Templates are a powerful feature in C++ that allows for the creation of generic functions and classes. They provide a way to write code that works with different data type...read more

What is the best way to inject Dependency in Java?

Last Updated: 23 July 2025

You can transform standard Java classes into manageable objects by using dependency injection. Your programs can define dependencies on any managed object by using depende...read more

DSA

GFacts

Java Facts

What will happen if i declare main() in java as non-static?

Last Updated: 27 December 2023

main() method in Java acts as an application's entry point. So declaration must read "public static void main(String[] args)" to work properly . What happens if you declar...read more

When is Doubly Linked List more Efficient than Singly Linked List?

Last Updated: 23 July 2025

Did you know there are some cases where a Doubly Linked List is more efficient than a Singly Linked List, even though it takes more memory compared to a Singly Linked List...read more

DSA

GFacts

Linked Lists

GFact | Why Factorial of 0 is 1?

Last Updated: 04 October 2023

Have you ever thought about why the factorial of 0 is 1? If yes then here you can find the justification for the same.why factorial of 0(0!) is 1?Factorial of Number:Facto...read more

Most efficient way to Concatenate Strings in Python

Last Updated: 03 December 2024

Concatenation is an operation that is very frequently used in various problems related to strings. There are multiple methods to concat strings in various languages. Pytho...read more

Python string-programs

GFact | Why s.lower_bound(x) is faster than lower_bound(s.begin(), s.end(), x) in C++ STL?

Last Updated: 23 July 2025

Have you ever got TLE on solving a question using function lower_bound (s.begin(), s.end(), x) and when you use s.lower_bound(x) it runs just fine (here s is a Data struct...read more

G-Fact | All palindromes with an even number of digits are divisible by 11

Last Updated: 16 November 2023

The statement "All palindromes with an even number of digits are divisible by 11" is a well-known property in number theory and mathematics. It is an intriguing characteri...read more

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DSA

GFacts

Can C++ reference member be declared without being initialized with declaration?

Last Updated: 26 April 2021

To many readers, this might sound the same thing, i.e. class_type *var = NULL;*var = some_work;is same asclass_type *var = some_work;But in actual, it is not. When the de...read more

Technical Scripter

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C++

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GFacts

cpp-references

Nesbitt's Inequality

Last Updated: 23 August 2022

Nesbitt's inequality is one of the simplest inequalities in mathematics. According to the statement of the inequality, for any 3 given real numbers, they satisfy the mathe...read more

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