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Coding and Aptitude Round before interview

Coding challenges are meant to test your coding skills (especially if you are applying for ML engineer role). The coding challenges can contain algorithm and data structures problems of varying difficulty. These challenges will be timed based on how complicated the questions are. These are intended to test your basic algorithmic thinking.
Sometimes, a complicated data science question like making predictions based on twitter data are also given. These challenges are hosted on HackerRank, HackerEarth, CoderByte etc. In addition, you may even be asked multiple-choice questions on the fundamentals of data science and statistics. This round is meant to be a filtering round where candidates whose fundamentals are little shaky are eliminated. These rounds are typically conducted without any manual intervention, so it is important to be well prepared for this round.

Sometimes a separate Aptitude test is conducted or along with the technical round an aptitude test is also conducted to assess your aptitude skills. A Data Scientist is expected to have a good aptitude as this field is continuously evolving and a Data Scientist encounters new challenges every day. If you have appeared for GMAT / GRE or CAT, this should be easy for you.

Resources for Prep:

For algorithms and data structures prep,Leetcode and Hackerrank are good resources.

For aptitude prep, you can refer to IndiaBixand Practice Aptitude.

With respect to data science challenges, practice well on GLabs and Kaggle.

Brilliant is an excellent resource for tricky math and statistics questions.

For practising SQL, SQL Zoo and Mode Analytics are good resources that allow you to solve the exercises in the browser itself.

Things to Note:

Ensure that you are calm and relaxed before you attempt to answer the challenge. Read through all the questions before you start attempting the same. Let your mind go into problem-solving mode before your fingers do!

In case, you are finished with the test before time, recheck your answers and then submit.

Sometimes these rounds donโ€™t go your way, you might have had a brain fade, it was not your day etc. Donโ€™t worry! Shake if off for there is always a next time and this is not the end of the world.

Follow This WhatsApp Channel for More Interview Resources:
https://whatsapp.com/channel/0029VahGttK5a24AXAJDjm2R
JavaScript Roadmap
|
|-- Fundamentals
| |-- Basics of Programming
| | |-- Introduction to JavaScript
| | |-- Setting Up Development Environment (IDE: VSCode, Sublime Text, etc.)
| |
| |-- Syntax and Structure
| | |-- Basic Syntax
| | |-- Variables (var, let, const) and Data Types
| | |-- Operators and Expressions
|
|-- Control Structures
| |-- Conditional Statements
| | |-- If-Else Statements
| | |-- Switch Case
| |
| |-- Loops
| | |-- For Loop
| | |-- While Loop
| | |-- Do-While Loop
| | |-- For...in and For...of Loops
| |
| |-- Exception Handling
| | |-- Try-Catch Block
| | |-- Finally Block
| | |-- Throwing Errors
|
|-- Functions and Scope
| |-- Defining Functions
| | |-- Function Declarations
| | |-- Function Expressions
| | |-- Arrow Functions
| |
| |-- Parameters and Arguments
| | |-- Default Parameters
| | |-- Rest and Spread Operators
| |
| |-- Scope
| | |-- Global and Local Scope
| | |-- Hoisting
| | |-- Closures
|
|-- Object-Oriented Programming (OOP)
| |-- Basics of OOP
| | |-- Objects and Properties
| | |-- Methods
| |
| |-- Prototypes and Inheritance
| | |-- Prototype Chain
| | |-- Inheritance with Prototypes
| |
| |-- Classes
| | |-- Class Syntax
| | |-- Constructors
| | |-- Inheritance (extends and super)
| |
| |-- Encapsulation
| | |-- Private and Public Members (using # for private)
|
|-- Advanced JavaScript
| |-- Asynchronous JavaScript
| | |-- Callbacks
| | |-- Promises
| | |-- Async/Await
| |
| |-- Event Loop
| | |-- Understanding the Event Loop
| | |-- Microtasks and Macrotasks
|
|-- Data Structures
| |-- Arrays
| | |-- Array Methods (map, filter, reduce, etc.)
| | |-- Array Manipulation
| |
| |-- Objects
| | |-- Creating and Manipulating Objects
| | |-- Object Methods (keys, values, entries)
| |
| |-- Sets and Maps
| | |-- Working with Sets
| | |-- Working with Maps
|
|-- Browser APIs
| |-- Document Object Model (DOM)
| | |-- Selecting Elements
| | |-- Manipulating Elements
| | |-- Event Handling
| |
| |-- Fetch API
| | |-- Making HTTP Requests
| | |-- Handling Responses
| |
| |-- Web Storage
| | |-- LocalStorage and SessionStorage
|
|-- Libraries and Frameworks
| |-- jQuery
| | |-- Basics of jQuery
| | |-- DOM Manipulation with jQuery
| |
| |-- React
| | |-- Components and JSX
| | |-- State and Props
| | |-- Lifecycle Methods
| |
| |-- Angular
| | |-- Components and Templates
| | |-- Services and Dependency Injection
| | |-- Routing
| |
| |-- Vue
| | |-- Vue Instance
| | |-- Templates and Directives
| | |-- Vue Router
|
|-- Build Tools and Module Bundlers
| |-- NPM and Yarn
| | |-- Package Management
| | |-- Scripts and Dependencies
| |
| |-- Webpack
| | |-- Module Bundling
| | |-- Loaders and Plugins
| |
| |-- Babel
| | |-- Transpiling JavaScript
| | |-- Using Presets and Plugins
|
|-- Testing in JavaScript
| |-- Unit Testing
| | |-- Jest (Setup, Writing Tests, Mocking)
| | |-- Mocha and Chai
| |
| |-- End-to-End Testing
| | |-- Cypress
| | |-- Selenium WebDriver
|
|-- Deployment and DevOps
| |-- Continuous Integration/Continuous Deployment (CI/CD)
| | |-- GitHub Actions
| | |-- Travis CI
| |
| |-- Containers and Microservices
| | |-- Docker (Dockerfile, Image Creation, Container Management)
| | |-- Kubernetes (Pods, Services, Deployments, Managing JavaScript Applications on Kubernetes)

Free JavaScript Courses ๐Ÿ‘‡๐Ÿ‘‡

https://udacity.com/course/intro-to-javascript--ud803

https://udemy.com/course/javascript-essentials-mini-course

https://udacity.com/course/object-oriented-javascript--ud711

https://t.me/javascriptresourcestp

https://www.udemy.com/course/code-your-first-game

Join for more free courses
https://t.me/javascriptresourcestp

ENJOY LEARNING ๐Ÿ‘๐Ÿ‘
Complete Machine Learning Roadmap

1. Introduction to Machine Learning
- Definition
- Purpose
- Types of Machine Learning (Supervised, Unsupervised, Reinforcement)

2. Mathematics for Machine Learning
- Linear Algebra
- Calculus
- Statistics and Probability

3. Programming Languages for ML
- Python and Libraries (NumPy, Pandas, Matplotlib)
- R

4. Data Preprocessing
- Handling Missing Data
- Feature Scaling
- Data Transformation

5. Exploratory Data Analysis (EDA)
- Data Visualization
- Descriptive Statistics

6. Supervised Learning
- Regression
- Classification
- Model Evaluation

7. Unsupervised Learning
- Clustering (K-Means, Hierarchical)
- Dimensionality Reduction (PCA)

8. Model Selection and Evaluation
- Cross-Validation
- Hyperparameter Tuning
- Evaluation Metrics (Precision, Recall, F1 Score)

9. Ensemble Learning
- Random Forest
- Gradient Boosting

10. Neural Networks and Deep Learning
- Introduction to Neural Networks
- Building and Training Neural Networks
- Convolutional Neural Networks (CNN)
- Recurrent Neural Networks (RNN)

11. Natural Language Processing (NLP)
- Text Preprocessing
- Sentiment Analysis
- Named Entity Recognition (NER)

12. Reinforcement Learning
- Basics
- Markov Decision Processes
- Q-Learning

13. Machine Learning Frameworks
- TensorFlow
- PyTorch
- Scikit-Learn

14. Deployment of ML Models
- Flask for Web Deployment
- Docker and Kubernetes

15. Ethical and Responsible AI
- Bias and Fairness
- Ethical Considerations

16. Machine Learning in Production
- Model Monitoring
- Continuous Integration/Continuous Deployment (CI/CD)

17. Real-world Projects and Case Studies

18. Machine Learning Resources
- Online Courses
- Books
- Blogs and Journals

๐Ÿ“š Learning Resources for Machine Learning:
- [Python for Machine Learning](https://t.me/pythonresourcestp/48)
- [Fast.ai: Practical Deep Learning for Coders](https://course.fast.ai/)
- [Intro to Machine Learning](https://learn.microsoft.com/en-us/training/paths/intro-to-ml-with-python/)

๐Ÿ“š Books: https://t.me/mlresourcestp/45

๐Ÿ“š Join for more free resources
https://whatsapp.com/channel/0029VahGttK5a24AXAJDjm2R

ENJOY LEARNING! ๐Ÿ‘๐Ÿ‘
Free Programming Resources ๐Ÿ‘‡๐Ÿ‘‡

โœ… Data science and Data Analytics Free Courses by Google

https://developers.google.com/edu/python/introduction

https://grow.google/intl/en_in/data-analytics-course/?tab=get-started-in-the-field

https://cloud.google.com/data-science?hl=en

https://developers.google.com/machine-learning/crash-course

https://t.me/datascienceresourcestp/52

๐Ÿ” Free Data Analytics Courses by Microsoft

1. Get started with microsoft dataanalytics
https://learn.microsoft.com/en-us/training/paths/data-analytics-microsoft/

2. Introduction to version control with git
https://learn.microsoft.com/en-us/training/paths/intro-to-vc-git/

3. Microsoft azure ai fundamentals
https://learn.microsoft.com/en-us/training/paths/get-started-with-artificial-intelligence-on-azure/

๐Ÿค– Free AI Courses by Microsoft

1. Fundamentals of AI by Microsoft

https://learn.microsoft.com/en-us/training/paths/get-started-with-artificial-intelligence-on-azure/

2. Introduction to AI with python by Harvard.

https://pll.harvard.edu/course/cs50s-introduction-artificial-intelligence-python

๐Ÿ“š Useful Resources for the Programmers

Data Analyst Roadmap
https://t.me/dataanalysisresourcestp/48

Free C course from Microsoft
https://docs.microsoft.com/en-us/cpp/c-language/?view=msvc-170&viewFallbackFrom=vs-2019

Interactive React Native Resources
https://fullstackopen.com/en/part10

Python for Data Science and ML
https://t.me/pythonresourcestp/39

Ethical Hacking Course
https://t.me/zerotrusthackers/18

Unity Documentation
https://docs.unity3d.com/Manual/index.html

Advanced Javascript concepts
https://t.me/javascriptresourcestp/446

Oops in Java
https://nptel.ac.in/courses/106105224

Intro to Version control with Git
https://docs.microsoft.com/en-us/learn/modules/intro-to-git/0-introduction

Free PowerBI course by Microsoft
https://docs.microsoft.com/en-us/users/microsoftpowerplatform-5978/collections/k8xidwwnzk1em

Data Structures Interview Preparation
https://t.me/techpsyche/501

๐Ÿป Free Programming Courses by Microsoft

โฏ JavaScript
http://learn.microsoft.com/training/paths/web-development-101/

โฏ TypeScript
http://learn.microsoft.com/training/paths/build-javascript-applications-typescript/

โฏ C#
http://learn.microsoft.com/users/dotnet/collections/yz26f8y64n7k07

Join for more free resources.
https://t.me/techpsyche

ENJOY LEARNING ๐Ÿ‘๐Ÿ‘

๐Ÿ“š Join for more free resources
https://whatsapp.com/channel/0029VahGttK5a24AXAJDjm2R
Remote UI/UX Designer Needed at SPIRALYZE

Company: SPIRALYZE
Job Type: Fulltime

Required skills:
* Think in UI design: 3+ years of UI/UX design experience.
* Excel in UI with bonus UX experience.
* Expert in Figma: Create style libraries and handover files.
* Familiarity with HTML, CSS, and responsive frameworks.
* Stay updated on UI/UX trends.
* Overlap with EST (New York time) for 4+ hours.
* Excellent communication skills.

Apply Here:
https://kenyatrends.co.ke/remote-ui-ux-designer-needed-at-spiralyze/
Remote Software Engineer (Frontend, Backend, or Full stack) Job at Subscript

You'll work on:
* Backend: database design and implementation, complex data management problems, API design and implementation, writing tests
* Frontend: building features in our react app, HTML/CSS + styled components, building amazing user experiences, writing tests
* Frontend and backend: building and iterating on our product, collaborating with designers and founders, and making a product that users will love.

Apply Here:
https://kenyatrends.co.ke/remote-software-engineer-frontend-backend-or-full-stack-job-at-subscript/
COURSE

๐Ÿ”ฐ Master Course in CompTIA A+ (Core 1 & Core 2 - 101 Level) ๐Ÿ”ฐ

Size: 298 MB

๐Ÿ“ฅDownload Link:
https://mega.nz/file/6G5niaDJ#HgQQa5eGqe9JWWH2rzzEbwTTr-EewOPziUR475WpOBs

๐Ÿ”— Or Buy on Udemy:
https://udemy.com/course/master-course-in-comptia-a-core-1-core-2-101-level/

๐Ÿ“ขNo Copyright Infringement Intended, All The Credits & Rights Reserved to the Respected Actual Owner. We don't own this content.

Telegram Channel:
https://t.me/zerotrusthackers

WhatsApp Channel:
https://whatsapp.com/channel/0029VaxVv551iUxRku094918
100+ YouTube channels you should subscribe now as per your need

โฏ HTMLCSS โžŸ Kevin Powell
โฏ C โžŸ Jacob Sorber
โฏ C++ โžŸ TheCherno
โฏ Java โžŸ Telusko
โฏ C# โžŸ kudvenkat
โฏ Python โžŸ Corey Schafer
โฏ JavaScript โžŸ developedbyed
โฏ SQL โžŸ Joey Blue
โฏ Golang โžŸ Jon Calhoun
โฏ Swift โžŸ CodeWithChris
โฏ Kotlin โžŸ PhilippLackner
โฏ PHP โžŸ ProgramWithGio
โฏ Ruby โžŸ DriftingRuby
โฏ Rust โžŸ NoBoilerplate
โฏ Lua โžŸ Steve's teacher
โฏ Scala โžŸ DevInsideYou
โฏ Julia โžŸ TheJuliaLanguage
โฏ MATLAB โžŸ Joseph Delgadillo
โฏ R โžŸ marinstatlectures
โฏ C++ โžŸ javidx9
โฏ C++ โžŸ LearningLad
โฏ C++ โžŸ Trevor Payne
โฏ JavaScript โžŸ Akshay Saini
โฏ TypeScript โžŸ basarat
โฏ TypeScript โžŸ TypeScriptTV
โฏ C# โžŸ Microsoft Developer [Bob Tabor]
โฏ C# โžŸ dotnet [ScottKendra]
โฏ SQL โžŸ The Magic of SQL

-- Frameworks --
โฏ Node.js โžŸ Traversy Media
โฏ React โžŸ Codevolution
โฏ React โžŸ Dave Gray
โฏ React โžŸ Jack Herrington
โฏ Next.js โžŸ Lama Dev
โฏ Vue โžŸ Vue Mastery
โฏ Svelte โžŸ Joy of Code
โฏ Angular โžŸ Angular University
โฏ Django โžŸ CodingEntrepreneurs
โฏ Laravel โžŸ LaravelDaily
โฏ Blazor โžŸ James Montemagno
โฏ Spring โžŸ SpringSourceDev
โฏ SpringBoot โžŸ amigoscode
โฏ Ruby on Rails โžŸ GorailsTV

-- Mobile App --
โฏ React Native โžŸ Codevolution
โฏ React Native โžŸ Hitesh Choudhary
โฏ Flutter โžŸ The Flutter Way
โฏ Flutter โžŸ Tadas Petra

-- DSA --
โฏ take U forward
โฏ mycodeschool
โฏ Abdul Bari
โฏ Kunal Kushwaha
โฏ Jenny's Lectures CS IT
โฏ CodeWithHarry

-- Full Stack --
โฏ Traversy Media
โฏ NetNinja
โฏ Dave Gray

โฏ Projects
โžŸ WebDevSimplified
โžŸ JavaScript King
โฏ UI Design
โžŸ developedbyed
โžŸ DesignCourse

-- DevOps --
โฏ GIT โžŸ The Modern Coder
โฏ Linux โžŸ Learn Linux TV
โฏ DevOps โžŸ DevOpsToolkit
โฏ CICD โžŸ TechWorld with Nana
โฏ Docker โžŸ Bret Fisher
โฏ Kubernetes โžŸ Kubesimplify
โฏ Microservices โžŸ freeCodeCamp
โฏ Selenium โžŸ edureka!
โฏ Playwright โžŸ Jaydeep Karale

-- Cloud Computing --
โฏ AWS โžŸ amazonwebservices
โฏ Azure โžŸ Adam Marczak
โฏ GCP โžŸ edureka!
โฏ Serverless โžŸ Serverless
โฏ Jenkins โžŸ DevOps Journey
โฏ Puppet โžŸ simplilearn
โฏ Chef โžŸ simplilearn
โฏ Ansible โžŸ Learn Linux TV

-- Data Science --

โฏ Mathematics
โžŸ 3Blue1Brown
โžŸ ProfRobBob
โžŸ Ghrist Math
โžŸ Numberphile

โฏ Machine Learning
โžŸ sentdex
โžŸ DeepLearningAI
โžŸ StatQuest

โฏ Excel
โžŸ ExcelIsFun
โžŸ Kevin Stratvert
โžŸ Chandoo

โฏ Tableau โžŸ Tableau Tim

โฏ PowerBI
โžŸ Guy in a Cube
โžŸ Chandoo

โฏ Data Science
โžŸ Krish Naik
โžŸ Leila Gharani
โžŸ Socratica

โฏ Data Analyst
โžŸ AlexTheAnalyst
โžŸ Luke Barousse

โฏ Projects โžŸ Ken Jee

-- Code Editors --
โฏ Vim โžŸ ThePrimeagen
โฏ VS Code โžŸ Visual Studio Code
โฏ Jupyter Notebook โžŸ Corey Schafer

-- Special Mentions --
โฏ Programming in 100 Sec โžŸ Fireship
โฏ Interviews โžŸ NeetCode

-- Free Education --
โžŸ freecodecamp
โžŸ Simplilearn
โžŸ edureka!

-- Most Valuable --
โžŸ TechWithTim
โžŸ programmingwithmosh
โžŸ Traversy Media
โžŸ BroCodez
โžŸ thenewboston
โžŸ Telusko
โžŸ Derek Banas
โžŸ CodeWithHarry
โžŸ MySirG .com
โžŸ TechWorld with Nana
โžŸ KodeKloud

Telegram Channel: https://t.me/techpsyche

WhatsApp Channel: https://whatsapp.com/channel/0029VahGttK5a24AXAJDjm2R
๐Ÿ‘1
Understanding Essential Charts:

1๏ธโƒฃ Line Charts: These are your go-to for tracking trends over time.

2๏ธโƒฃ Bar Charts: Perfect for comparing different categories, like sales in different regions or the popularity of different products.

3๏ธโƒฃ Pie Charts: These are all about showing proportions.

4๏ธโƒฃ Scatter Plots: If you're trying to find relationships between variables, scatter plots are your friend.

5๏ธโƒฃ Histograms: how data is distributed, histograms are your tool of choice.

Data Visualization Tools: https://t.me/dataanalysisresourcestp/70

๐Ÿ‘ ๐ฆ๐ฎ๐ฌ๐ญ-๐๐จ F๐ซ๐ž๐ž ๐ƒ๐š๐ญ๐š ๐€๐ง๐š๐ฅ๐ฒ๐ญ๐ข๐œ๐ฌ ๐œ๐จ๐ฎ๐ซ๐ฌ๐ž๐ฌ: https://tinyurl.com/m239d2s8

Follow this WhatsApp Channel for More Resources:
https://whatsapp.com/channel/0029VahGttK5a24AXAJDjm2R
โค1
2025 Google Conference Scholarships

Perks:

* Roundtrip airfare
* Conference registration
* $100 stipend
* Hotel accommodation

Criteria:

* Be a full-time student enrolled with a recognized university in Africa OR Asia Pacific(APAC) who is in need of conference travel funds.
* If you're Non-African, also check the provided link for appropriate option.

Apply here:
https://kenyatrends.co.ke/2025-google-conference-scholarships/