All Medium Articles

Frequency of each character in a String using unordered_map in C++

Given a string str, the task is to find the frequency of each character of a string using an unordered_map in C++ STL. Examples: Input:… Read More

cpp-strings

cpp-unordered_map

frequency-counting

STL

C++

Python – Replace duplicate Occurrence in String

Sometimes, while working with Python strings, we can have problem in which we need to perform the replace of a word. This is quite common… Read More

Python string-programs

Python

Python Programs

Difference Between ON Page vs OFF Page SEO

On-page SEO and Off-page SEO are two essential components of search engine optimization, each focusing on different aspects to improve a website’s visibility on search… Read More

Search Engine Optimization (SEO)

Sub Set Search Visualizer using PyQt5

In this article we will see how we can make a PyQt5 application which will visualize the subset search algorithm. Sub Set Search : Sometimes… Read More

PyQt-exercise

Python-gui

Python-PyQt

Python

Python – Check whether a string starts and ends with the same character or not (using Regular Expression)

Given a string. The task is to write a regular expression to check whether a string starts and ends with the same character. Examples: Input… Read More

Python Regex-programs

python-regex

Python

Python Programs

Check the equality of integer division and math.floor() of Regular division in Python

For large quotients, floor division (//) doesn’t seem to be necessarily equal to the floor of regular division (math.floor(a/b)) Examples: Input : 269792703866060742 // 3… Read More

python-basics

Python

Print all pairs from two BSTs whose sum is greater than the given value

Given two Binary Search Tree (BSTs) and a value X, the problem is to print all pairs from both the BSTs whose sum is greater… Read More

Inorder Traversal

Binary Search Tree

DSA

Tree

Find length of loop in a Linked List using Map

Write a program that checks whether a given Linked List contains a loop and if a loop is present then returns the count of nodes… Read More

loop

C++ Programs

Data Structures

DSA

Linked List

Write From Home

How to validate PAN Card number using Regular Expression

Given string str of alphanumeric characters, the task is to check whether the string is a valid PAN (Permanent Account Number) Card number or not… Read More

CPP-regex

java-regular-expression

DSA

Pattern Searching

Strings

Count of numbers upto M with GCD equals to K when paired with M

Given two integers M and K, the task is to count the number of integers between [0, M] such that GCD of that integer with… Read More

euler-totient

GCD-LCM

DSA

Mathematical

School Programming

Locating multiple elements in Selenium Python

Locators Strategies in Selenium Python are methods that are used to locate single or multiple elements from the page and perform operations on the same.… Read More

Python-selenium

selenium

Python

Selenium

Software Testing

Check whether a Matrix is a Latin Square or not

Given a square matrix of size N x N, the task is to check if it is Latin square or not. A square matrix is… Read More

Advanced Data Structure

Arrays

C++

C++ Programs

Competitive Programming

Data Structures

DSA

Engineering Mathematics

Mathematical

Matrix

QA – Placement Quizzes

School Programming

Theory of Computation

Sort a string according to the frequency of characters

Given a string str, the task is to sort the string according to the frequency of each character, in ascending order. If two elements have… Read More

cpp-vector

frequency-counting

lexicographic-ordering

DSA

Sorting

Strings

Functional Modelling in object oriented analysis and design

Functional Modelling: A functional model of a system specifies how the output values are computed in the system from the input values, without considering the… Read More

Computer Subject

Software Engineering

SMS Full Form

SMS stands for Short Message Service. It is basically a standardized communication protocol that is used for the exchange of text messages between mobile devices.… Read More

Picked

Computer Networks

Full Form

Program to print all the non-reachable nodes | Using BFS

Given an undirected graph and a set of vertices, we have to print all the non-reachable nodes from the given head node using a breadth-first… Read More

BFS

C++

C++ Programs

Data Structures

DSA

Graph

Count of Nodes whose both immediate children are its prime factors

Given a Binary Tree, the task is to print the count of nodes having both children and both of them are its prime factors. Examples: Input:… Read More

Binary Tree

prime-factor

DSA

Tree

LED Full Form

LED stands for Light Emitting Diode LED is right now the most energy-efficient lighting technology available for use. The LED is a semiconductors light source. Mainly… Read More

Picked

Full Form

Write From Home

How to use pynput to make a Keylogger?

Prerequisites: Python Programming LanguageThe package pynput.keyboard contains classes for controlling and monitoring the keyboard. pynput is the library of Python that can be used to… Read More

Python-projects

python-utility

Python

Maximum GCD of all subarrays of length at least 2

Given an array arr[] of N numbers. The task is to find the maximum GCD of all subarrays of size greater than 1. Examples: Input: arr[]… Read More

GCD-LCM

subarray

Aptitude

Arrays

DSA

Mathematical