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Modular Addition

Below are some interesting properties of Modular Addition: (a + b) mod m = ((a mod m) + (b mod m)) mod m (a + b… Read More

Modular Arithmetic

Engineering Mathematics

GATE CS

Packet Queuing and Dropping in Routers

Routers are essential networking devices that direct the flow of data over a network. Routers have one or more input and output interfaces which receive… Read More

Computer Networks-Network Layer

Computer Networks

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SQL Join vs Subquery

What are Joins? A join is a query that combines records from two or more tables. A join will be performed whenever multiple tables appear… Read More

DBMS-Join

Picked

SQL

std::less in C++ with Examples

The std::less is a member of the functional class (<functional.h>) used for performing comparisons. It is defined as a function object class for less than… Read More

C++

C++ Programs

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R – Object Oriented Programming

In this article, we will discuss Object-Oriented Programming (OOPs) in R Programming Language. We will discuss the S3 and S4 classes, the inheritance in these… Read More

Picked

R-OOPs

R Language

Maximum LCM among all pairs (i, j) from the given Array

Given an array arr[], the task is to find the maximum LCM when the elements of the array are taken in pairs. Examples: Input: arr[]… Read More

Algorithms

Arrays

Competitive Programming

DSA

Dividing Sticks Problem

Given a list of integer each representing the length of each stick and an integer which tells how many times we can break a stick… Read More

Algorithms

Competitive Programming

DSA

Python

Recursion

Count of distinct characters in a substring by given range for Q queries

Given a string S consisting of lower case alphabets of size N and Q queries in the range [L, R], the task is to print… Read More

substring

Algorithms

Arrays

Competitive Programming

DSA

Strings

Probability of getting K heads in N coin tosses

Given two integers N and R. The task is to calculate the probability of getting exactly r heads in n successive tosses. A fair coin has… Read More

Combinatorial

DSA

Mathematical

Program to print numbers from N to 1 in reverse order

Given a number N, the task is to print the numbers from N to 1.Examples: Input: N = 10 Output: 10 9 8 7 6 5… Read More

Natural Numbers

Reverse

Arrays

C++ Programs

DSA

Mathematical

Recursion

School Programming

Difference between FCFS and SJF CPU scheduling algorithms

1. First Come First Served (FCFS) : First Come First Served (FCFS) is the simplest type of algorithm. It is a non-preemptive algorithm i.e. the… Read More

Difference Between

GATE CS

Operating Systems

Optical Storage Systems

THe Optical memory is an electronic storage medium that uses a laser beam to store and retrieve digital (binary) data. In optical storage technology, a… Read More

Computer Organization & Architecture

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Python del to delete objects

The del keyword in Python is primarily used to delete objects in Python. Since everything in Python represents an object in one way or another,… Read More

python-basics

Python-Data Type

Python-datatype

Python

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C program to Count the digits of a number

Given a number N, write a C program to find the count of digits in the number N. Examples: Input: N = 12345 Output: 5… Read More

number-digits

C Programs

DSA

Mathematical

School Programming

Automated Certificate generator using Opencv in Python

Prerequisites: Introduction to OpenCV OpenCV is the huge open-source library for computer vision, machine learning, and image processing and now it plays a major role… Read More

OpenCV

Python-OpenCV

Project

Python

Python Programs

Difference between Method Overloading and Method Overriding in Python

Method Overloading: Method Overloading is an example of Compile time polymorphism. In this, more than one method of the same class shares the same method name… Read More

python-basics

python-oop-concepts

Difference Between

Python

Take input from stdin in Python

In this article, we will read How to take input from stdin in Python. There are a number of ways in which we can take… Read More

python-basics

python-input-output

Python

Python – Replace all occurrences of a substring in a string

Sometimes, while working with Python strings, we can have a problem in which we need to replace all occurrences of a substring with other. Input… Read More

Python string-programs

Python

Creating Custom Widgets in PyQt5

PyQt5 is one of the most advanced GUI library for Python. While being powerful, it’s also well structured and makes it easy for you to… Read More

Python-gui

Python-PyQt

Python

Factory method design pattern in Java

It is a creational design pattern that talks about the creation of an object. The factory design pattern says to define an interface ( A… Read More

Design Pattern

Java Programs

System Design

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