All Hard Articles

Polarization Formula

Polarization is defined as a phenomenon generated by the wave nature of electromagnetic radiation. Polarized light is a state in which the light waves are… Read More

Physics-Formulas

Picked

School Learning

School Physics

What are the functions of NABARD?

National Bank for Agriculture and Rural Development [NABARD] could be a pinnacle advancement finance institution fully claimed by India’s Government. The bank has been burdened… Read More

Economics-MAQ

Picked

School Economics

School Learning

Social Science

SSC/Banking

Check if subsequences formed by given characters are same for Q queries

Given an array arr[] of N strings, and Q queries where each of the queries contains some characters, the task is to check, for each… Read More

Competitive Programming

DSA

Pattern Searching

Strings

Compute before Matrix

For a given matrix before[][], the corresponding cell (x, y) of the after[][] matrix is calculated as follows: res = 0;for(i = 0; i <=… Read More

prefix-sum

DSA

Mathematical

Matrix

How to Read Data from Password Protected Excel using Java and Apache POI?

Apache POI is an open-source java library to create and manipulate various file formats based on Microsoft Office. Using POI, one should be able to… Read More

Apache-POI

selenium

Java

Software Testing

How to Write Data from Excel File into a HashMap using Java and Apache POI?

Apache POI is an open-source java library to create and manipulate various file formats based on Microsoft Office. Using POI, one should be able to… Read More

Apache-POI

selenium

Java

Software Testing

How to Read Data From Formula Cell in Excel Sheet using Selenium and Apache POI?

The Apache POI is one of the most popular java libraries for selenium data-driven testing. It is mainly used for handling all types of Microsoft… Read More

Apache-POI

selenium

Java

Software Testing

What is SSL/TLS Handshake?

Network security is important for office, home, and business networks. The problem is at the utmost places wireless communication is used or we can say… Read More

Picked

Computer Networks

Computer Subject

Cryptography in Blockchain

One of the important questions that always comes to our mind is How blockchain is secure? and What makes blockchain secure? Blockchain security is built… Read More

Picked

Blockchain

Financial Statement with Adjustments

Financial statements refer to those Accounts and Statements which are prepared at the end of an accounting period (which is generally a year) to know… Read More

Accountancy

Commerce

Generate lexicographically smallest Permutation of 1 to N where elements follow given relation

Given an integer N and an array arr[] of M pairs of type (Ai, Bi), the task is to generate the lexicographically smallest possible permutation… Read More

Data Structures

DSA

Replace infinity with large finite numbers and fill NaN for complex input values using NumPy in Python

In this article, we will cover how to fill Nan for complex input values and infinity values with large finite numbers in Python using NumPy.… Read More

Picked

Python-numpy

Python

OS Detection in Nmap in Kali Linux

NMAP stands for Network Mapper which is an open-source tool used for network exploration and security auditing, in comparison to this, a tool named Nessus… Read More

Kali-Linux

Linux-Tools

Picked

Linux-Unix

Plotting ROC curve in R Programming

Error metrics allow us to evaluate and justify the model’s performance on a specific dataset. One such error metric is the ROC plot. A classification… Read More

Data Visualization

Picked

R-Charts

R-Graphs

R-Packages

R-plots

R Language

Build a custom Map using Header file in C++

Maps are associative containers that store elements in a mapped fashion. Each element has a key value and a mapped value. No two mapped values… Read More

Data Structures

DSA

Minimize difference between maximum and minimum Subarray sum by splitting Array into 4 parts

Given an array arr[] of size N, the task is to find the minimum difference between the maximum and the minimum subarray sum when the… Read More

prefix-sum

subarray

subarray-sum

two-pointer-algorithm

Arrays

DSA

Production across Countries

Production across Countries: Fast improvement in transportation and correspondence innovation and the advancement of exchange limitations and unfamiliar speculation have been the central points that… Read More

Economics-Class 10

Picked

Class 10

School Economics

School Learning

Reduce string by performing repeated digit sum in group of K

Given a string S of length N consisting of digits and an integer K, Reduce the string by performing the following operation till the length… Read More

Data Structures

DSA

Google Interview Experience for IT Support Engineer

I applied to Google IT support Engineering Profile by Referral from one of my friends, Initially, I provided my Resume and Transcript of all my… Read More

Experiences

Interview Experiences

Loan Activities of Banks

Loan Activities of Banks: Money is an enthralling subject full of enigmas. For the pupils, it is critical to capture this element. The evolution of… Read More

Economics-Class 10

Picked

Class 10

School Economics

School Learning