All Medium Articles

Find the Number of Permutations that satisfy the given condition in an array

Given an array arr[] of size N, the task is to find the number of permutations in the array that follows the given condition: If… Read More

permutation

Combinatorial

DSA

Greedy

Mathematical

How to Upload a Project on Github?

A lot of students ask questions about open source. What is open source, and how can I contribute to it? Is it helpful if I… Read More

Git

Using Patches in Git

GIT patch or GIT diff is used to share the changes made by you to others without pushing it to main branch of the repository.… Read More

Picked

Git

Write From Home

R Factors

Factors in R Programming Language are data structures that are implemented to categorize the data or represent categorical data and store it on multiple levels. … Read More

R Data-types

R Language

DataFrame Operations in R

DataFrames are generic data objects of R which are used to store the tabular data. Data frames are considered to be the most popular data… Read More

Picked

R-DataFrame

Programming Language

R Language

Write From Home

Queries for Nth smallest character for a given range in a string

Given a string str which consists of only lowercase letters and an array arr[][] that represents range queries on the given string str where each… Read More

C++

DSA

Hash

Java

Strings

Square Difference of Two large Consecutive Numbers

Given two positive consecutive numbers M and N, the task is to find the square difference of the two numbers without computing the square of… Read More

Algorithms

Aptitude

DSA

Maximum profit by buying and selling a share at most K times | Greedy Approach

In share trading, a buyer buys shares and sells on a future date. Given the stock price of N days, the trader is allowed to… Read More

Algorithms

Arrays

C++

DSA

Greedy

Mathematical

Minimum broadcast range required by M towers to reach N houses

Given an array a containing positions of N houses, and an array b containing positions of M radio towers, each placed along a horizontal line,… Read More

Arrays

DSA

Java

Mathematical

School Programming

Check if cells numbered 1 to K in a grid can be connected after removal of atmost one blocked cell

Given a grid A of size N*M consisting of K cells denoted by values in range [1, K], some blocked cells denoted by -1 and… Read More

BFS

Competitive Programming

DSA

Graph

Matrix

Queue

Minimum characters required to make a password strong

Given string str denoting a password, the task is to count the minimum characters that need to be added to make the password strong. A password… Read More

CPP-regex

java-regular-expression

DSA

Pattern Searching

Strings

Check if the tower of sight issue occurs or not

Given four co-ordinates A, B, C and D where towers need to be constructed, the task is to check if the tower of sight issue… Read More

Geometric-Lines

C++

Competitive Programming

DSA

Geometric

Mathematical

Write From Home

Count pairs in array such that one element is reverse of another

Given an array arr[], the task is to count the pairs in the array such that the elements are the reverse of each other. Examples: … Read More

Arrays

DSA

Mathematical

Find and Count total factors of co-prime A or B in a given range 1 to N

Given three integers N, A, B, the task is to find the remainder when the sum of integers which are divisible by either A or… Read More

Analysis of Algorithms

DSA

Mathematical

Find the maximum sum (a+b) for a given input integer N satisfying the given condition

Given an integer N, the task is to find the largest sum (a + b) {1 ? a ? N, 1 ? b ? N}… Read More

Maths

C++

DSA

Greedy

Mathematical

Product Metrics in Software Engineering

Product metrics are software product measures at any stage of their development, from requirements to established systems. Product metrics are related to software features only.… Read More

Software Engineering

Write From Home

Lateral Keyword in SQL

The lateral keyword represents a lateral join between two or more tables. It joins the output of the outer query with the production of the… Read More

SQL-basics

DBMS

SQL

Write From Home

Which One is Most Demanding Back-End Web Framework between Laravel , Node.js and Django ?

The two back-end web frameworks i.e. Laravel, Django, and the run-time environment NodeJS helps in the development activities. All end up acquiring the same objective,… Read More

Laravel

Node.js-Misc

CSS

HTML

Node.js

PHP

PHP Programs

Web Technologies

What is the use of curly brackets in the `var { … } = …` statements ?

Destructuring assignment allows us to assign the properties of an array or object to a bunch of variables that are sometimes very convenient and short.… Read More

JavaScript-Questions

Picked

JavaScript

Web Technologies

How to pass string to a component using Angular2 ?

In angular2, a component is considered as a ‘view’ with its own logic and data. Data binding is the process of combining data values with… Read More

AngularJS-Misc

Picked

AngularJS

Technical Scripter

Web Technologies