Trending December 2023 # Computational Design Workshop By Ratedu In 4 Cities In India # Suggested January 2024 # Top 13 Popular

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rat[LAB]EDU – Winter School 2023-19

Organized By: Sushant Verma

// Winter School 2023-19 :: Parametric Skyscrapers

The 5 day intensive workshop (3 days of studio sessions + 2 day online sessions) for design students & professionals will delve into computational & parametric methods (using Rhino3D & Grasshopper3D) to create systemic design models for architectural design of skyscraper. Advanced Design Tools such as Environmental Analysis and Structural Analysis for skyscraper will also be integrated in the studio, along with presentation and documentation for competition submission.

WS18-19 will run across 4 cities and investigate the agenda of Parametric Skyscapers for participants to experience a hands-on experience of correctly using the digital tools through computation and parametric methods.

Studio is designed as a 3-day event in all cities (+2 Online Sessions for each batch)  comprising of technical tutorials, teaching sessions, design critics, design documentation methods, presentations, submission panel preparations and design exercises culminating in a critical discussion about computational design and its future potentials, pertaining to high-rise developments.

The 3-day studio / workshop shall focus on inculcating the following aspects as a part of syllabus:

Parametric & Computational Design Methods

Skyscraper Design Tool-set

Environmental Analysis

Façade and Building Skin Design

Structural Analysis (if required)

Documentation and Presentation (for competition submission)

Best 3 projects (cumulative from all cities) will work with rat[LAB] Studio (Delhi) to submit the finalized project for eVolo Skyscraper 2023 (and other similar international competitions, where the scheme fits appropriately).

The selection will be based on final works developed in guidance of Studio Head – Ar. Sushant Verma from rat[LAB] Studio.

Teaching Methodology

Studio is structured to teach participants the use of computational techniques through Grasshopper® (Generative modeling plug-in for Rhino®) and ways to integrate it with architectural & structural systems for skyscraper design leading to international competition submissions.

No previous knowledge of Grasshopper & Rhinoceros is required for these workshops as basic technical knowledge will be provided on Day 1.

Pre-designed customizable tools will be provided by rat[LAB]EDU on Day 2 for design explorations & experimentation, pertaining to applications for high-rise buildings.

The workshop is curated in the form of a design studio with collective learning than mere software sessions. Software form a part of the tool-set that is inculcated in the 3-day studio sessions.

 Technical Sessions

Technical sessions will be provided to give an insight to computation, algorithms and parametric design methodologies to students & professionals. The idea of designing parametrically and use of computational methodologies is new to Indian context and has great potentials across various design disciplines. Digital experimentation using computational techniques (primarily Rhino3D + Grasshopper) will initiate the discourse, followed by technical sessions, theoretical discussions and presentations.


*Mumbai workshop has been shifted and clubbed with Pune workshop.

PUNE:  7th, 8th, 9th Jan 2023 (Monday to Wednesday)

Dr D Y Patil College Of Architecture (Akurdi)

Dr. D. Y. Patil Educational Complex,

Ravet Village Road, Sector 29,

Nigadi Pradhikaran, Akurdi, Pune,

Maharashtra 411044

NEW DELHI: 18th, 19th, 20th Jan 2023 (Friday to Sunday)

Sushant School of Art & Architecture

Ansal University

Sector 55, Golf Course Road,

Gurugram, Haryana 122003

CHENNAI: 23rd, 24th, 25th Jan 2023 (Wednesday to Friday)

RVS School of Change

9th Floor, Sapna Trade Centre

135, Poonamallee High Road,

Chennai, Tamil Nadu 600084

BENGALURU: 1st, 2nd, 3rd Feb 2023 (Friday to Sunday)

KS School of Architecture

No. 15, Off Kanakapura Road,

Near Vajarahalli, Mallasandra,

Karnataka 560109

*Since multiple organizations form a part of Winter School programme (venue partners, media partners, collaborating studio, etc.), there is always a slight possibility in change of dates and venue.

Tutors & Speakers

Sushant Verma – Studio Director (rat[LAB]Studio) (

Each city may have an additional co-tutor

Eminent experts from architectural design with knowledge in high-rise buildings will be invited as guest speakers for studio or online sessions.

Software & skills 

Basic 3D modeling skills in any software are preferred (Previous knowledge of Rhino3D is not obligatory).

Participants should bring their own laptop with pre-installed software.

NOTE: Grasshopper does not fully function on Rhino for MAC. A windows-enabled laptop is necessary.

Rhino 5 (90-day evaluation) can be downloaded for free here.

Rhino 6 (90-day evaluation) can be downloaded for free here.

Grasshopper free-version can be downloaded here.

Additional software & plug-ins will be provided in the workshop.

Registration Dates

All Registrations end 4 days prior to workshop start date (Or till seats last)

There are limited seats available.

Participation Fee

Student and recent graduates *- INR 8250 + 18% GST

Professional – Jr. **- INR 9750 + 18% GST

Professional – Sr. ***- INR 13750 + 18% GST

*(Graduated from B.Arch. or similar programme in 2023 or later)

**( Graduated from B.Arch. or similar programme between 2013 to 2023)

***( Graduated from B.Arch. or similar programme in or before 2012)

Valid ID Proof (for grad year) required STRICTLY; Nominal Platform service charges applicable.

Early-bird registration (limited seats only) ending on 20th Nov 2023: 15% Flat Discount

Group Registrations (Groups of 4 – 7) ending on 20th Nov 2023 : 20% Flat Discount

Venue Partners’ students : 25% Discount (as per coupon codes provided to school)



Distribution of research and study material.

Talk/Presentation on high-rise and skyscraper design.

Case study on Computational Design for skyscrapers.

Brainstorming to prepare for 3-day Studio Workshop.


Presentations / Lectures on Parametric Design & Computational Thinking

Introduction to Rhinoceros 3D – GUI & Basic Use

Grasshopper GUI & Basic Functionality

Points, Lines, Surfaces.

Parameters, Inputs, Numbers.

Simple & Referenced Geometry, Locally Defined Geometry, Baking, etc.

Lists & Data Tree Management

Data Manipulation & Visualization

Surface Tessellations


Patterns & Geometric Explorations

Releasing of pre-designed tools (Grasshopper scripts) to all participants

Functionality of tools for Skyscraper Design

Agenda for competition

Design development (in teams or individual)

Discussions on submission panels & output



Group Discussions & Preparation of Panels

3D Visualizations, Diagrams, Drawing Preparations

Presentation Methods

Finalizing A1 Panels (for submissions)


Collaborating with rat[LAB] Studio to finalize entries

Visual Communications & Technical Checks

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The Future Of Social Networking Workshop (By W3C)

I am often asked what the future of social media is. And always my answer is “No idea“. I am not very good at making predictions… unlike those smart people who shared their work at W3C workshop on the future of social networking (kudos for the find to PageOneResults via WebmasterForums).

The workshop lists a lot of really insightful articles that definitely deserve attention. The goal of the project is to bring together “the world experts on social networking design, management and operation”. Topic discussed include:

Appropriate architecture for social networks (including privacy and trust issues);

Adapted user experiences (with focus on mobility and accessibility);

Context and communities: “how social networks can be enriched by more context-aware devices and applications”.

Here are just a few papers listed:

The Future of Social Networking:

Eventually, Myspace and Facebook, no matter what fancy features they may add, will seem as archaic as Compuserve and Prodigy do now. The acceptance of a distributed social networking model is, as the internet has shown, an inevitability. All proprietary walled gardens have given way to distributed models, and social networking is the next frontier. And just like open, distributed protocols before it, social networking requires an open API in order to function properly. Since many walled gardens are based on amassing as many users as possible, in order to maximize ad revenue, adopting a distributed model goes against their business plan. Therefore, it’s up to the open source community to come up with a real distributed social networking solution.

Leveraging Web 2.0 Communities in Professional Organisations (pdf);

Leveraging Social data with Semantics:

…we can extend the representation of social links thanks to the semantic relationships found in the vocabularies shared by the members of the social networks. These “enriched” representations of social networks, combined with a similar enrichment of the semantics of the meta-data attached to the shared resources, will allow the elaboration of “shared knowledge graphs”.

Privacy and Social Network Sites: Follow the Money! (pdf) – also, check out the references in the bottom;

Mobile Social Networking: Two Great Tastes:

Mobile social networking involves more than simply replicating existing PC browser-based social networking interfaces in a mobile environment… Integrating person-to-person calling devices into a socially-networked Web is not the same thing as displaying the socially-networked Web on a mobile phone.

Celebration Of Makar Sankranti Festival In India

Celebration of Makar Sankranti

Makar Sankranti is a significant Indian festival that the whole country celebrates. Every year it falls in mid-January, basically on the 14th or 15th. Many parts of the country celebrate it uniquely, which is the specialty of Indian culture. One festival celebrates differently: Punjabi celebrates Lohri, Maharashtra celebrates Sankranti, and Tamil Nadu celebrates Pongal. Makar Sankranti is an auspicious festival as per the Hindu calendar. People celebrate this day by flying kites, exchanging sweets, taking a dip in holy rivers, and preparing delicious food. This festival is seen as a festival of joy and prosperity and celebrates thanking the Sun God and seeking His blessings.

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Significance of Makar Sankranti Festival

Major cities of India celebrate this festival. Makar Sankranti signifies the transition of the Sun into the Northern Hemisphere, meaning the beginning of longer and warmer days. The festival is also an important agricultural festival and marks the end of the winter solstice, which marks the beginning of the harvest season. It is a reminder to live with joy and gratitude.


It is an ancient festival celebrated in India. it comes on a fixed date, 14 January, every year. It marks in various ways in different parts of India, but the core concept of celebrating the festival is the same. Hindu scriptures have mentioned Makar Sankranti in the Rigveda, Mahabharata, and Puranas. It marks the beginning of the harvest season and celebrates with great enthusiasm in almost all parts of India.

The festival also marks the end of the cold winter and the beginning of the longer, warmer summer days. People exchange sweets and hold kite-flying competitions. They also take dips in rivers and perform puja (worship). It is considered an auspicious day and seen as an opportunity to give and receive blessings from the gods. It believes that performing puja and other rituals during this time will bring good luck and prosperity. People think that taking a dip in the holy rivers on this day will wash away one’s sins.

Makar Sankranti has been celebrated for centuries and is an important festival in the Hindu calendar. The festival act as a reminder of the importance of nature in our lives.

Celebration of Makar Sankranti Festival in Various Parts of India

In Gujarat, it is marked as Uttarayan and considered one of the most important festivals of the year. People fly kites in the sky, wear bright new clothes, and enjoy delicious food such as undhiyu and chikkis.

Punjab celebrates Lohri, where people gather around a bonfire and offer prayers to the deities. Maharashtra celebrates this festival, where people exchange sweets and offer prayers at temples.

Tamil Nadu celebrates Pongalous dishes like Pongal, Sakkara Pongal, and Ven Pongal.

Karnataka celebrates as Sankranti, and people prepare sweets like holige, obbattu, and sugarcane juice; also, they exchange the same. Andhra Pradesh celebrates Bhogi, where people decorate their homes with colorful rangoli and light lamps and prepare traditional delicacies. No matter where in India it is celebrated, it is a festival that signifies the onset of a new season and brings joy and prosperity to the people.

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Ethical Hacking Salary In India In 2023: For Freshers & Experienced

Hacking is done to gain unauthorised access to any computer system to perform malicious activities. Once the hacker has access to the system, he can steal sensitive information or even delete files. Hacking is illegal when done without permission. Hacking systems without adequate permission or indulging in any other activity associated with hacking is a serious cybercrime and can lead to extreme consequences.

However, hacking performed with the permission of the network owners falls under the wing of ethical hacking. It is done to determine the vulnerabilities and security risks in a computer system. 

Generally, renowned software companies hire ethical hackers to hack their systems and find weak points or vulnerabilities in their applications. This allows them to employ preventive measures to prevent malicious activities and reduce risk factors. Almost every top tech company practices this as a precautionary measure against legitimate hackers with nefarious intentions. 

Given the growing risk in the current digital age, the cybersecurity and information security markets are witnessing rapid growth worldwide. 

To cater to the sector’s requirements, there is a requirement for professionals like Ethical Hackers, Security Analysts, Security Officers, etc., to protect company information. Among all, it’s the job of an ethical hacker that receives the highest salary.

If you have been considering pursuing ethical hacking as a profession, here is everything you need to know. The article includes everything from eligibility to the highest ethical hacking salary, and the various ethical hackers can take up in India.  

Who is an Ethical Hacker?

An ethical hacker is a certified and skilled professional hired by top software companies for their excellent non-technical and technical skills and expertise, helping the company identify and deal with vulnerabilities on target systems and networks. They are network and computer experts who have proficient knowledge of various operating systems, hacking techniques, and processes to detect possible threats. This makes them an essential part of IT security. The government also hires ethical hackers to prevent the compromise of national security features.

There are both white hat and black hat hackers in the market. But what separates them is how they work. An ethical hacker will work with the permission of the network owners. They will comply with the rules of the network owners and take into account the country’s laws. A white hacker’s sole aim is to assess an organisation’s security standing. Black hat hackers, on the other hand, use illegal means to get access to a system. So, there is a considerable risk of facing legal charges.

White hackers in the formal security industry are generally referred to as cybersecurity specialists. Here are the roles and responsibilities or duties of an ethical hacker: 

1. An ethical hacker is responsible for meeting with network owners to discuss the security system.

2. Ethical hackers conduct thorough research of the company system to understand the possible penetration site and network structure.

3. An ethical hacker develops scripts suitable for testing the vulnerabilities of the network system.

4. They conduct various penetration tests on the network of the organisation.

5. Ethical hackers identify and record breaches and security flaws.

6. They identify the areas requiring high-level security.

7. They review the security network to find any possible issues.

8. Ethical hackers create suggestions for necessary security upgrades.

9. They formulate penetration test reports to present to the client.

10. The ethical hacker performs various penetration tests after the implementation of a new security.

Eligibility Criteria for Ethical Hackers

To land an ethical hacking position in a reputable firm, you must have a Bachelor’s degree in computer science or information technology. Candidates must obtain a

PG Diploma in Software Development – Specialisation in Cyber Security

to take up ethical hacking as a career. Further, if you have a

PG Certification in Cyber Security

from a reputed institute, it will help you attack lucrative opportunities from top companies in the IT sector.

An ethical hacker must have expertise and sound working knowledge of Linux servers, Microsoft, Virtualization, Cisco network switches, Citrix, and Microsoft Exchange. Adequate knowledge of the latest penetration software and tools is essential to succeed and stay ahead of the competition.

Why should you pursue Ethical Hacking as a career?

With the rise of online thefts, ethical hacking has become one of the most popular career options. An increasing number of breaches and cybercrimes have been reported in recent times. As per Gartner and Accenture’s surveys, the Information security market is expected to

reach $170.4 billion by 2023

, and nearly 68% of business leaders worldwide feel that

cybersecurity risks are growing.

Thus, there is a growing demand for ethical hackers in various industries like government organisations, IT sectors, law enforcement, departments in National intelligence, financial institutions, etc. In fact, business organisations need ethical hackers to keep their information protected. It is with this increasing demand that the ethical hacking salary in India is quite lucrative. But before taking up the profession, one must be aware that the position does not just require educational qualifications and technical skills but also honesty, strong ethics, and most importantly, a willingness to learn to combat challenges.

Ethical Hacking: Skills Required

An ethical hacker must be proficient in networking databases, system handling, and operating systems. They also require soft skills required to communicate to the clients’ the problems in the organisation’s security and suggest the most efficient upgrades. Apart from these, they must possess knowledge of:

1. Network traffic sniffing

2. SQL injection

3. Orchestrate various network attacks

4. DNS spoofing

5. Exploiting buffer overflow vulnerabilities

6. Password guessing and tracking

7. Session hijacking and spoofing

An ethical hacker must have a creative mind because black hat hackers continuously look for opportunities to exploit a system in ingenious ways. They should be able to think like a black hat hacker and work with software testing teams to protect and prevent such security breaches.

Ethical Hacker Career Path

With the increase in computer hacking, government organisations, financial institutions, and renowned companies recruit skilled, ethical hackers to keep their information safe and secured. There is no shortage of ethical hacking jobs in India. As per the

2023/2023 Official Annual Cybersecurity jobs report

, the demand for information security personnel will lead to an estimated 3.5 million unfilled jobs being created globally by 2023. The industry will witness a 350% growth by 2023. In India, the number is expected to rise by 77,000 in the next five years. Technical hackers can look for top companies like Dell, Google, Wipro, Reliance, Infosys, and IBM to land the highest-paid ethical hacking jobs in India.

Salary bands in ethical hacking vary greatly based on the companies you work for, experience levels, and educational qualifications, among other factors. Currently, the

A candidate who possesses the required skills and educational qualifications can pursue any of the following positions:

  1. Data Security Analyst Average Base Salary: ₹480k /year

Data security specialists or analysts are responsible for planning and executing the protection of the data present on the organisation’s computers and networks. They work closely with the employees of the organisation to educate them about security protocols.

  2. Network Security Engineer Average Base Salary: ₹517k /year

A network security engineer is responsible for maintaining the security of various networking systems of an organisation. He maintains the security system developing possible plans to bring the system back to normal even after problems created by hackers, attacks, natural disasters, or other means.

  3.Security Auditor Average Base Salary: ₹691k /year

As a security auditor is responsible for providing security audits of the systems. Once done, he needs to give a detailed information report of the organisation system to the owner. This helps the network owners to make necessary changes to improve their system. A security auditor has the choice of either work alone or as a part of a team.

  4. Cyber Security Analyst Average Base Salary: ₹525k /year

A cybersecurity analyst works together with IT professionals to check on the organisation’s security measures and controls. They are responsible for planning, implementing, and evaluating the network solutions by identifying the system’s vulnerability and infrastructures before any attack. Also, they perform various tests of security assessment and risk analysis to help keep the information secure. Companies hire security analysts to prevent breaches and cyber-attacks, which enables them to preserve their financial health and brand image. Since the professionals have adequate knowledge about the security procedures, they protect the company from future lapses and intrusions.

  5. Penetration Tester Average Base Salary: ₹595K/year

A penetration tester has to test various IT system procedures to identify possible system flaws. They perform a penetration test to identify the potential vulnerabilities and improper configuration by hacking into the network system and computers. These professionals are also responsible for keeping a record of their activities and discovered vulnerabilities. A penetration tester job requires competent testing skills and expertise since they employ cutting-edge testing tools to break into the systems. 

  6. Information Security Officer Average Base Salary: ₹1180k /year

An information security officer is the senior manager of an organisation responsible for maintaining the enterprise strategy. They implement strategies to ensure the safety of information and technology assets. He aids the organisation staff in developing, implementing, and maintaining procedures that help reduce information leaks.

Future Scope of Ethical Hacking

The job of an ethical hacker is challenging. They help companies find possible security leaks in their systems and protect them from potential threats.

They are expected to document all the steps undertaken carefully to determine the vulnerabilities in a system. Further, they might have to spend hours writing reports in clear and concise language for network owners. However, not all ethical hacking is confined to penetration testing. Many ethical hackers write examining computer codes to look for flaws.

However, with the growing need for ethical hackers in various industries, a talent gap is expected in the coming years. As per the

World Economic Forum (WEF),

“nowhere is the workforce-skills gap more pronounced than in cybersecurity.”

As more and more businesses are realising this,  almost every industry is looking to hire ethical hackers to keep their information safe and secure from possible breaches. Therefore, it is the need of the hour for aspirants in these fields to upskill themselves adequately to attract promising job opportunities. 

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Ashampoo Home Design 6 Lets You Plan And Design Your House In 3D

Ashampoo Home Design 6 lets you plan and design your house in 3D




Ashampoo Home Design 6 is a







, extend, and furnish buildings.

It’s an excellent software that has a very steep learning curve and a simple interface.

You will have access to millions of objects, not to mention that you can import them from

Google Sketchup and Collada.

Although it’s a complex graphics program, it will also run on previous Windows versions.



To fix Windows PC system issues, you will need a dedicated tool

Fortect is a tool that does not simply cleans up your PC, but has a repository with several millions of Windows System files stored in their initial version. When your PC encounters a problem, Fortect will fix it for you, by replacing bad files with fresh versions. To fix your current PC issue, here are the steps you need to take:

Download Fortect and install it on your PC.

Start the tool’s scanning process to look for corrupt files that are the source of your problem

Fortect has been downloaded by


readers this month.

Ashampoo Home Design 6 is a powerful and versatile 3D planning tool to design, extend and furnish buildings.

With the help of this software, you can design your dream house in 3D by creating professional-grade blueprints on your PC and become the architect of your own home.

In this article, we will detail its design features and benefits so you can decide whether it’s right for your needs.

What is Ashampoo Home Design 6?

Ashampoo Home Design 6 has everything you need to start building your dream house. The tool offers you access to multiple new objects through Google Sketchup and Collada model import.

Precise 3D previews are available for every planning step so that you can get a better picture of the entire house.  

The previews feature furniture, lights, and surroundings as well. You can even plan roof-mounted photovoltaic installations.

The tool supports loading, editing, and saving of 3D object formats. And moreover, you will have access to millions of 3D objects from its library.

It’s also optimized to make the best out of your system resources. Even if it’s a complex program that uses a lot of graphics, it can run the most calculations in just a few seconds.

Ashampoo Home Design 6 features

Here’s a list of all key-features that Ashampoo Home Design 6 brings to the table:

Mirror objects and 2D symbols with ease

Native 64-bit support – more speed, more stability

More intuitive with multifunctional ribbons

Smart, well-structured open and save dialogs with details view

Keyboard shortcuts for frequently used features

Advanced project diagnosis tool: Find and fix errors with ease

Design views: 2D, 3D, Cross-section

3D constructions: 7 primitives, extrusion/rotation/sweep/subtraction solids

Building components: Walls, ceilings, windows, doors, openings, slots, skylights, solar elements, chimneys, beams

Measurements: Metric and imperial with precise dimensions

Input aids: Customizable reference points, construction aids, angle grid

Exterior lighting simulation

Freely positionable camera and viewing angles

Here are some of the most important design and construction tools that you will benefit from:

3D raster elements for huge spaces

Ingenious 3D area processing

Roofing Wizard: Various material, cladding, rafters, eaves and gables settings, 7 dormer types

Stair Generator: 3 solid and wooden types (straight, geometrical, landing), handrails, wellholes

Topography Designer: 6 forms (hill, swale, plateau, wall, trench, slope)

Topography Designer: 4 terrain elements (bed, way, terrace, water course)

Customizable contours

Catalog (Object Library)

You will have access to millions of objects, including appliances, labels, symbols, and more:

Access to multiple new objects through Google Sketchup and Collada model import

Over 380 new symbols for electrical, gas, water, and security appliances

Construction elements: Doors, profiles, windows, solar elements, constructions (e.g. balconies, carports)

Objects: 2D (cars, people, plants, animals)

Objects 3D: Exterior (e.g. garages, garden appliances)

Components (windows, doors, columns, tiles, girder)

Interior (e.g. kitchen and bathroom appliances), people, basic forms, signboards

Textures: Exterior (grounds, grass, etc.)

Building (wood, metal, plaster, etc.)

2D Symbols: Various symbols from different areas including appliances, building elements, and others

System requirements:

Operating system: Windows 10, Windows 8, Windows 7

RAM: Minimum 4 GB

Hard drive space: 1.34 GB

Other: VS 2023 Redistributables

Ashampoo Home Design 6

You don’t have to be an architect to design your dream home with this awesome software.

Check priceVisit website

We hope that you managed to get your copy of Ashampoo Home Design 6 and you’re already happily designing your masterpiece.

You might also be interesting in one of the best piping design software tools to get the functional network done in no time.

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Javascript Program To Count Rotations Divisible By 4

In this tutorial, we will learn to count the total number of rotations divisible by 4 for the given number.

Problem statement − We have given a number value. We need to rotate numbers in clockwise or anti-clockwise directions and count the total number of rotations divisible by 4.

Here, we will learn two different approaches to counting rotations divisible by 4.

Rotate the Number and Check if it is Divisible by 4

In this approach, we will convert the number to a string first. We can make n rotations for the string of length n. We will remove the first character of the string and add it at the last of the string. After that, we can check if the new number generated by rotation is divisible by 4.


Users can follow the syntax below to check rotation is divisible by 4 and rotate the string of numbers.

for ( ) { if (parseInt(numStr) % 4 == 0) { count++; } numStr = numStr.substring(1, len) + numStr[0]; }

In the above syntax, the parseInt() method is used to convert the string to the number, and the substring() method is used to rotate the string.


Step 1 − Use the toString() method and convert the number to the string.

Step 2 − Use the for loop to make total ‘n’ rotations for the string of the length ‘n’.

Step 3 − Use the parseInt() method to convert the string to a number and check whether the number is divisible by 4. If the number is divisible by 4, increase the value of the count variable by 1.

Step 4 − Use the substring() method to get the substring from 1st index. Furthermore, append the string’s first character at the end of the substring. This way, we can rotate the string and generate a new number.

Example 1

In the example below, we have defined the countRotations() function, which implements the above algorithm and returns the total number of rotations divisible by 4. In the output, users can observe that total of 2 rotations of the number is divisible by 4.

let output = document.getElementById(‘output’); let numStr = number.toString(); let len = numStr.length; let count = 0;

for (let i = 0; i < len; i++) {

if (parseInt(numStr) % 4 == 0) { count++; }

numStr = numStr.substring(1, len) + numStr[0]; } return count; } let number = 121342435345; output.innerHTML = “Total count of rotations divisible by 4 of ” + number + ” is ” + countRotations(number);

Check Every Pair of 2 Digits is Divisible by 4

If the last 2 digit of any number is divisible by 4, we can say that number is divisible by 4. While rotating the number, every pair of two digits comes at the end of the number. So, we can check if any pair of two digits is divisible by 4; we can say one rotation related to that pair is divisible by 4.


Users can follow the syntax below to extract the pair of two digits from the number and check if it is divisible by 4.

let lastDigit = num % 10; num = Math.floor(num / 10); let secondLastDigit = num % 10; if ((secondLastDigit * 10 + lastDigit) % 4 == 0) { count++; }

In the above syntax, we fetch the last and second last digit from the number. After that, we create a number of two digits using both and check if it is divisible by 4. If yes, we increase the value of the count variable.


Step 1 − If the number is of a single digit, check if it is divisible by 4. If yes, return 1; else, return 0.

Step 2 − If the number contains two or more digits, initialize the ‘count’ variable with 0.

Step 3 − Now, we need to create a single pair using the last digit and first digit of the number. Get the last digit using the modulo operator and the first using the Math.log() method.

Step 4 − Multiply the last digit with 10 and the first digit into that. After that, check if the result is divisible by 4. If yes, increase the value of the count by 1.

Step 5 − Use the while loop to check for other pairs of two digits. In the while loop, get the last and second last digit using the modulo operator. Create a pair using both digits and check if the pair is divisible by 2. If yes, increase the value of the count by 1.

Example 2

In this example, the countRotations() function counts the number of pairs of two digits divisible by 4. It implements the above algorithm and returns the value of the count once all operations are completed.

let output = document.getElementById(‘output’); function countRotations(number) { if (number < 10) { return number % 4 == 0 ? 1 : 0; } else { let count = 0; let num = number; let lastDigit = number % 10; let firstDigit = Math.floor(number / Math.pow(10, Math.floor(Math.log10(number)))); if ((lastDigit * 10 + firstDigit) % 4 == 0) { count++; } let lastDigit = num % 10; num = Math.floor(num / 10); let secondLastDigit = num % 10; if ((secondLastDigit * 10 + lastDigit) % 4 == 0) { count++; } } return count; } } let number = 90645232432; output.innerHTML = “Total count of rotations divisible by 4 of ” + number + ” is ” + countRotations(number);

Users learned to find the total number of rotations of the number divisible by 4. We have seen two different approaches. The first approach converts a number to a string, rotates the string, again converts a string to a number and checks newly generated rotation is divisible by 4.

The second approach counts the total number of pairs of two digits divisible by 4.

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