Move to a single dir

.github/workflows/link-check.yml

@@ -0,0 +1,20 @@
+name: Check Markdown Links
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+
+jobs:
+  link-check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Run lychee link checker
+        uses: lycheeverse/lychee-action@v2
+        with:
+          args: --verbose --no-progress --max-redirects 5 --retry-wait-time 2 --max-retries 3 --exclude-all-private --exclude-file .lycheeignore './**/*.md'
+        env:
+          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}

.gitignore

@@ -33,6 +33,7 @@ __pycache__/
 *.pyo
 *.pyd
 venv/
+*.venv/
 
 # === Java ===
 *.class

.lycheeignore

@@ -0,0 +1,7 @@
+# Ignore local dev servers
+localhost
+127.0.0.1
+
+# Ignore external sites that block CI bots
+amazon.com
+leetcode.com

README.md

@@ -6,32 +6,32 @@ The challenges will be released weekly and come in different formats: head-to-he
 
 ## 🆕 Latest Challenge
 
-**[Week 22 - Ye Ole PubSub Pub](./week22_the_ole_pubsub_pub)**
+**[Week 22 - Ye Ole PubSub Pub](challenges/week22_the_ole_pubsub_pub)**
 
 ### 🗂 All Challenges
 
 #### ✅ Completed Challenges
-- [Week 21 - Dennis Ritchie](./week21_dennis_ritchie)
-- [Week 20 - FN(solid)](./week20_fn_solid)
-- [Week 19 - Shunting Yard](./week19_shunting_yard_algo)
-- [Week 18 - Pascals Pascal Triangle](./week18_pascals_pascal_triangle)
-- [Week 17 - Page Peelers ](./week17_page_peelers)
-- [Week 16 - Pen and Paper ](./week16_pen_and_paper)
-- [Week 15 - Terminal Exorcism ](./week15_terminal_exorcism)
-- [Week 14 - Now gimme my money ](./week14_now_gimme_my_money)
-- [Week 13 - The Greatest Programming Book Written. Ever.](./week13_greatest_programming_book_ever_written)
-- [Week 12 - Access Granted](./week12_access_granted)
-- [Week 11 - We're in!](./week11_we_are_in)
-- [Week 10 - XOR FTW](./week10_xor_ftw) 
-- [Week 9 - We Need To Go Deeper](./week9_inception)
-- [Week 8 - Red Solo Cups](./week8_red_solo_cups)
-- [Week 7 - A Variable Says What?](./week7_a_variable_says_what)
-- [Week 6 - Stay Solid Friends](./week6_stay_solid_friends)
-- [Week 5 - Swappin Aint Easy](./week5_swappin_aint_easy)
-- [Week 4 - Wilt Chamberlain's 100 Point Game](./week4_wiltchamberlains_100_point_game)
-- [Week 3 - This Math Aint Math'n](./week3_this_math_aint_mathin)
-- [Week 2 - Join The Conga Line](./week2_the_conga_line)
-- [Week 1 - Gossip Spreads](./week1_gossip_spreads)
+- [Week 21 - Dennis Ritchie](challenges/week21_dennis_ritchie)
+- [Week 20 - FN(solid)](challenges/week20_fn_solid)
+- [Week 19 - Shunting Yard](challenges/week19_shunting_yard_algo)
+- [Week 18 - Pascals Pascal Triangle](challenges/week18_pascals_pascal_triangle)
+- [Week 17 - Page Peelers ](challenges/week17_page_peelers)
+- [Week 16 - Pen and Paper ](challenges/week16_pen_and_paper)
+- [Week 15 - Terminal Exorcism ](challenges/week15_terminal_exorcism)
+- [Week 14 - Now gimme my money ](challenges/week14_now_gimme_my_money)
+- [Week 13 - The Greatest Programming Book Written. Ever.](challenges/week13_greatest_programming_book_ever_written)
+- [Week 12 - Access Granted](challenges/week12_access_granted)
+- [Week 11 - We're in!](challenges/week11_we_are_in)
+- [Week 10 - XOR FTW](challenges/week10_xor_ftw) 
+- [Week 9 - We Need To Go Deeper](challenges/week9_inception)
+- [Week 8 - Red Solo Cups](challenges/week8_red_solo_cups)
+- [Week 7 - A Variable Says What?](challenges/week7_a_variable_says_what)
+- [Week 6 - Stay Solid Friends](challenges/week6_stay_solid_friends)
+- [Week 5 - Swappin Aint Easy](challenges/week5_swappin_aint_easy)
+- [Week 4 - Wilt Chamberlain's 100 Point Game](challenges/week4_wiltchamberlains_100_point_game)
+- [Week 3 - This Math Aint Math'n](challenges/week3_this_math_aint_mathin)
+- [Week 2 - Join The Conga Line](challenges/week2_the_conga_line)
+- [Week 1 - Gossip Spreads](challenges/week1_gossip_spreads)
 
 #### 🔜 Upcoming Challenges
 - The Greatest Programming Book Ever Written

week11_we_are_in/README.md → challenges/week11_we_are_in/README.md

@@ -20,7 +20,7 @@ But not before leaving behind **3 encrypted files** and a trail of questionable
 
 Reverse-engineer and **crack the encrypted files** using the clues left behind by the vibe coder:
 
-- 🧠 Inference from [last week’s challenge](https://github.com/richvigorito/dev-challenges/tree/main/week10_xor_ftw)
+- 🧠 Inference from [last week’s challenge](../week10_xor_ftw)
 - ☕ And some cryptic desk remnants: a π mug, a worn copy of Hitchhiker’s Guide, and a note: “Et tu, Brute?”
 - 🧾 The vibe coder's commit history:
 

week13_greatest_programming_book_ever_written/README.md → challenges/week13_greatest_programming_book_ever_written/README.md

@@ -2,7 +2,7 @@
 
 ## 📝 Challenge Overview  
 
-In 2013, while taking an Algorithms course at Portland State University the professor [Dr. Herbert Mayer](https://de.wikipedia.org/wiki/Herbert_G._Mayer), a deeply respected authority in computer science, lifted this book and in his thick German accent said *"dis est de best programming book ever vritten."*; which I thought was incredible because 1) he just brought in the book in to show it off, it wasnt course material and 2) considering the [books that he wrote himself](https://www.amazon.com/Computers-Technology-Herbert-Mayer-Books/s?rh=n%3A5%2Cp_27%3AHerbert%2BMayer) figured it must of been good. I bought the book immediately, saw it was in Pascal, and closed immediately 😂😂😂. 
+In 2013, while taking an Algorithms course at Portland State University the professor [Dr. Herbert Mayer](https://de.wikipedia.org/wiki/Herbert_G._Mayer), a deeply respected authority in computer science, lifted this book and in his thick German accent said *"dis est de best programming book ever vritten."*; which I thought was incredible because 1) he just brought in the book in to show it off, it wasnt course material and 2) considering the [books that he wrote himself](https://www.amazon.com/stores/Herbert-G.-Mayer/author/B001KIAOAM) figured it must of been good. I bought the book immediately, saw it was in Pascal, and closed immediately 😂😂😂. 
 
 Well today we're gonna learn some Pascal together so we can enjoy this ancient masterpiece. 
 

week14_now_gimme_my_money/README.md → challenges/week14_now_gimme_my_money/README.md

@@ -9,7 +9,7 @@ You’ve inherited an invoicing system with a pluggable `SumModule` component. T
 
 - Should we sum values **as-is with floats**?
 - Should we **convert to cents** and avoid FP altogether?
-- Would fancy algorithms like [Kahan summation](https://www.geeksforgeeks.org/dsa/kahan-summation-algorithm/), [improved Neumaier version](https://en.wikipedia.org/wiki/Kahan_summation_algorithm#Further_enhancements) or a language specific package/datatype that uses [arbitray precision](https://en.wikipedia.org/wiki/Arbitrary-precision_arithmetic) like ([go big](https://pkg.go.dev/math/big), [php bcmath](https://www.php.net/manual/en/book.bc.php0), [python decimal module](https://docs.python.org/3/library/decimal.html), etc) to reduce errors 'enough'?
+- Would fancy algorithms like [Kahan summation](https://www.geeksforgeeks.org/dsa/kahan-summation-algorithm/), [improved Neumaier version](https://en.wikipedia.org/wiki/Kahan_summation_algorithm#Further_enhancements) or a language specific package/datatype that uses [arbitray precision](https://en.wikipedia.org/wiki/Arbitrary-precision_arithmetic) like ([go big](https://pkg.go.dev/math/big), [php bcmath](https://www.php.net/manual/en/book.bc.php), [python decimal module](https://docs.python.org/3/library/decimal.html), etc) to reduce errors 'enough'?
 
 Your task: implement as many versions and compare!
 

week1_gossip_spreads/solutions/python/README.md → challenges/week1_gossip_spreads/solutions/python/README.md

@@ -50,7 +50,7 @@ Opens a WebSocket connection to receive real-time messages published to that top
 You can test this with tools like:
 - [Websocketking.com](http://websocketking.com)
 - [hoppscotch.io](http://hoppscotch.io)
-- [sample react ui](/week3_pubsub/solutions/react_frontend)
+- [sample react ui](../react_frontend)
 
 Example URL:
 ```bash