Problem Solving for Beginners: Build Algorithms from Scratch with First Principles and JavaScript
In this course, @Radu teaches his problem-solving techniques by using a challenging vision-based positioning system problem from his "Decode the Drawings" competition as a case study: https://youtu.be/bZ8uSzZv0ew?si=HJzT4YIEj2z_3GiK.
You will learn to break down a complex problem into smaller, manageable sub-problems, how to prioritize them, and how to work on interconnected issues independently.
The core goal is to develop a powerful thought process—building a solution from first principles, using simple reasoning and foundational math. We'll explore several approaches, starting by hand and then automating the steps with simple, powerful algorithms.
This course is perfect for beginners looking to sharpen their skills! All algorithms are implemented from scratch and explained step-by-step using simple language and visuals. We use JavaScript for ease of use and visualization, but you can follow along in any language.
The course is also offered by Karelia University of Applied Sciences: https://ella.eduplan.fi/karelia/computational-problem-solving/682722ead4168f741689894f
You can still register before the end of October (2025).
💻 Radu's Discord: https://discord.com/invite/gJFcF5XVn9
➡️ Download videos here: https://radufromfinland.com/decodeTheDrawings
⭐ Radu's videos mentioned in the course ⭐
Pythagorean Theorem: https://youtu.be/iqSlzYXdFzw?si=PEA6nGBb1yMYs6aj
Euclidean Distance: https://youtu.be/3rPwfmrCwVw?si=OudD3sqvBA5zRR5H
Circle Equation: https://youtu.be/1sJDuUSawRQ?si=3ckcZFhd4OVaoGrp
Trigonometry Lesson: https://youtu.be/xK3vKWMFVgw?si=qO9casbZNGhZINwu
Vectors Lesson: https://youtu.be/nzyOCd9FcCA?si=5e88Ylw17aJaSnVw
Roundness Measure: https://youtu.be/MdhM0kZjtD4?si=MkFjzstfZpaNEtdl
Draw the Portal Game Tutorial: https://youtu.be/0SxiyLk2IMM?si=liWS6a9V16x7kTwr
Why the Circle Encloses the Largest Area: https://youtu.be/CFBa2ezTQJQ?si=yHNiioLm6G_Utx1w
⭐ Desmos Demo Pages ⭐
Circle Equation: https://www.desmos.com/3d/nvdcrvqjqh
Surface: https://www.d
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React: Production Server Setup Part 2 - Live Coding with Jesse
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cookies vs localStorage vs sessionStorage - Beau teaches JavaScript
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Browser history tutorial - Beau teaches JavaScript
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Graph Data Structure Intro (inc. adjacency list, adjacency matrix, incidence matrix)
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React: Parameterized Routing with Next.js - Live Coding with Jesse
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React: Dealing with jQuery Issues - Live Coding with Jesse
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setInterval and setTimeout: timing events - Beau teaches JavaScript
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Browser and Device Testing - Live Coding with Jesse
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Last Minute Updates - Live Coding with Jesse
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Post Launch Updates - Live Coding with Jesse
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React: Setting Up Google Analytics - Live Coding with Jesse
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React: Masonry Layout - Live Coding with Jesse
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Load Balancing Digital Ocean Droplets - Live Coding with Jesse
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try, catch, finally, throw - error handling in JavaScript
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Load Balancing: SSL Passthrough Setup - Live Coding with Jesse
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Graphs: breadth-first search - Beau teaches JavaScript
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React: Masonry Layout Part 2 - Live Coding with Jesse
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React: WordPress API Live Search - Live Coding with Jesse
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Creating WordPress Custom Post Types - Live Coding With Jesse
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Dates - Beau teaches JavaScript
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Miscellaneous Front End Updates - Live Coding with Jesse
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Merging a Pull Request from GitHub - Live Coding with Jesse
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React + Prettier + Standard JS - Live Coding with Jesse
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React: Sortable Responsive Table - Live Coding with Jesse
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Geolocation Sorting by Distance - Live Coding with Jesse
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Tradeoff Matrix - Agile Software Development
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The Definition of Ready - Agile Software Development
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Getting first React job without experience - Ask Preethi
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React: Google Analytics Click Tracking - Live Coding with Jesse
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Submitting a PR to an Open Source Project - Live Coding with Jesse
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Should I go back to school to get CS degree? - Ask Preethi
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Hero Section CSS Changes - Live Coding with Jesse
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Working Agreement - Agile Software Development
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A day at Pennybox with Co-Founder Reji Eapen
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React: Sorting and Filtering Data - Live Coding with Jesse
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React: Sorting and Filtering Data Part 2 - Live Coding with Jesse
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React: Building a New UI - Live Coding with Jesse
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Definition of Done - Agile Software Development
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Getting started with jQuery (tutorial) - Beau teaches JavaScript
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Making a React Blog with WordPress Content - Live Coding with Jesse
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React, NextJS, CSS - Live Coding with Jesse
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jQuery events - Beau teaches JavaScript
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React/NextJS Routing and WordPress API Custom Types - Live Coding with Jesse
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React: Working with API Data - Live Coding with Jesse
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React: Refactoring Components - Live Streaming with Jesse
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jQuery effects - Beau teaches JavaScript
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More React Refactoring - Live Coding with Jesse
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animate in jQuery - Beau teaches JavaScript
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"Finishing" My React Site - Live Coding with Jesse
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Starting a New React Project (P2D1) - Live Coding with Jesse
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React Project 2 Day 2: Learning Material UI - Live Coding with Jesse
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The Agile Manifesto - Agile Software Development
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jQuery: get and set with http, text, val, and attr - Beau teaches JavaScript
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React Project 2 Day 3 - Live Coding with Jesse
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The INVEST approach to product backlog items
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React Project 2 Day 4 - Live Coding with Jesse
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Chickens and Pigs - Agile Software Development
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React Project 2 Day 5 - Live Coding with Jesse
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jQuery: add and remove DOM elements - Beau teaches JavaScript
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React Project 2 Day 6 - Live Coding with Jesse
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