Wordle

grep -E '^[a-z]{N}X[a-z]{M}$' file.txt grep -v '[abc]' file.txt

a Python script that simulates a Wordle-solving tree:

• Using char5.txt as the word list (all 5-letter words).

• First guess is "audio".

• Clues are given using "bgy" (blue, green, yellow).

• Explore up to 4 guesses deep, but stop further exploration if a solution is found (ggggg).

• Keep track of prior guesses and clues.

• Sort outputs based on clue combinations for readability.

Wordle-solving tree simulator in Python that:

• Uses char5.txt (5-letter words)

• First guess is "audio"

• Clues are "b" (gray), "y" (yellow), "g" (green)

• Explores up to 4 guesses deep

• Stops a branch if the solution is found (ggggg)

• Outputs each path in one line

• Keeps track of previous guesses/clues

• Sorts outputs by clue patterns

Money Money Money

1. Risk-Adjusted Return
2. Time in the market vs. Timing the market
3. Automatic Investing
4. Index investing vs stock picking
5. Dividend ReInvestment Plan (DRIP)
6. Dividend vs Growth Investments

Apollo Global Management, Shutterfly, Lifetouch - Epstein Files

Apollo Global Management, Shutterfly, Lifetouch - Epstein Files 

https://shutterflyinc.com/privacy

"We use your information to fulfill product orders, to customize and improve the advertising and content you see, to offer suggestions for personalized products based on your content, to deliver marketing communications and promotional materials that you may be interested in, to contact you and provide customer service, to protect the security or integrity of our databases or websites, to detect and prevent fraud or illegal activity, to take precautions against liability, to detect and remediate violations of our Terms of Use or other misuse of our Sites and Apps, for internal operational purposes, to develop and improve our products and services, and for products or services which may incorporate artificial intelligence or machine learning."

https://schools.lifetouch.com/blog/a-message-from-ceo-ken-murphy-on-student-privacy

"Lifetouch never shares, sells, or licenses student images to train AI models, including large language models, or facial recognition technology.  Lifetouch has never provided images for such purposes to any other third party."

https://www.sec.gov/Archives/edgar/data/1125920/000119312519098181/d710209ddef14a.htm

"2018 was a transformational year for Shutterfly. We almost doubled the size of the company with the Lifetouch, Inc."

https://ir.apollo.com/news-events/press-releases/detail/188/funds-managed-by-affiliates-of-apollo-global-management

"Funds Managed by Affiliates of Apollo Global Management Announce the Acquisition of Shutterfly, Inc. in an All-Cash Transaction Valued at $2.7 Billion"

All snippets retrieved Feb 20, 2026 at around 9:30am Central Time

Liquefaction

"In materials science, liquefaction is a process that generates a liquid from a solid" 

"generates a non-liquid phase which behaves in accordance with fluid dynamics" 

"It occurs both naturally and artificially" 

"In geology, soil liquefaction refers to the process by which water-saturated, unconsolidated sediments are transformed into a substance that acts like a liquid, often in an earthquake." 

"liquefaction of bulk materials in cargo ships may cause a dangerous shift in the load." https://en.wikipedia.org/wiki/Soil_liquefaction

Music Repository

https://id3.org/Lyrics3v2

https://en.wikipedia.org/wiki/ID3

https://en.wikipedia.org/wiki/MP3

https://itunespartner.apple.com/music/

https://www.mutopiaproject.org/

https://www.8notes.com/ 

AI Testing

https://www.anthropic.com/news/model-context-protocol

Karthik K.K.

1. https://www.youtube.com/@ExecuteAutomation
2. https://www.udemy.com/user/karthik-kk
3. https://www.linkedin.com/in/karthikkk

2025 May 4th, Day of Purpose

Participants at Day of Purpose - May 4th, 2025 City of Princeton

1.  The NH James, Jr Foundation
2. Blue Barn Pet Resort
3. Family Promise of Collin County
4. The Turning Point
5. North Texas Job Corps
6. Texas Muslim Women's Foundation
7. Christmas Air Conditioning & Heating
8. ZELOS DIRECT PRIMARY CARE
9. Collin County Association Chainsaw Team
10. Calabri Health
11. Young & Vibrant Tutoring
12. Meals on Wheels Collin County
13. Above All Things Dream Foundation
14. Push Me Pull You Org
15. Power and Glory Ministries of North Dallas
16. VFW Bois D'Arc Post 9167, Princeton, TX

Music Theory

 https://en.wikipedia.org/wiki/Music_theory

https://en.wikipedia.org/wiki/Music_and_mathematics

https://en.wikipedia.org/wiki/The_Geometry_of_Musical_Rhythm

https://en.wikipedia.org/wiki/Tempo

https://en.wikipedia.org/wiki/Metre_(music)

https://en.wikipedia.org/wiki/Lyric_setting

https://en.wikipedia.org/wiki/Metronome

https://en.wikipedia.org/wiki/Metric_modulation

https://en.wikipedia.org/wiki/Bar_(music)

https://en.wikipedia.org/wiki/Beat_(music)

https://en.wikipedia.org/wiki/Duration_(music)

https://en.wikipedia.org/wiki/Glossary_of_music_terminology

https://en.wikipedia.org/wiki/History_of_music#India

https://en.wikipedia.org/wiki/Music_in_ancient_India

https://en.wikipedia.org/wiki/Ancient_Tamil_music

https://en.wikipedia.org/wiki/Musicology

Astronomy

Eclipse - lunar/solar

tide

phase of moon

location of moon

angle of sunrise

Solstice / equinox

Analemma

https://en.wikipedia.org/wiki/Outline_of_astronomy

https://en.wikipedia.org/wiki/Template:Astronomy_navbox 

Tamil:

விநாடி = 24 seconds

நாழிகை = 24 minutes

முகூர்த்தம் = 48 minutes

1 Day = 30 முகூர்த்தம்

Wright Brothers

 1. "the Wrights calculated they needed an engine that produced at least 8 horsepower and weighed no more than 200 pounds (91 kilograms)."

            No such engine was available in the market, so they designed/and made one

            They choose aluminum... They painted black - so people did not know the metal (avoid copy)

2. Propeller: Navy's propeller designs were "cut and try". 

They used the wind tunnel. 

"propeller was a wing traveling in a spiral course".

"90 pounds of thrust to sustain the Flyer in flight at 24 mph" - "combined thrust of between 120 and 130 pounds at 330 rpm"

3. wind tunnel

4. "a highly unstable but controllable machine" (Like Bicycle, flights too...)

No Patent

Few reasons

1. Altruism and the Public Good
2. Encouraging Innovation
3. Financial Constraints
4. Open-Source Movements

Examples:

1. Wilhelm Conrad Roentgen (X-rays)
2. Nikola Tesla (Alternating Current)
3. Charles Babbage (Difference Engine)
4. Sir Tim Berners-Lee (World Wide Web)
5. Linus Torvalds (Linux)
6. Richard Stallman (Free Software Movement)
7. The Raspberry Pi Foundation (Educational Devices)
8. The Wright Brothers (Airplane)
9. Thomas Edison (Phonograph)
10. Open Source

Marie Curie - "There were no patents. We were working in the interests of science. Radium was not to enrich anyone. Radium... belongs to all people."

Apollo-11

The Virtual AGC Project Gemini — Apollo — Shuttle

Apollo 11 guidance computer Github

Virtual Apollo Guidance Computer Github

DSKY - display/keyboard

AGC - Apollo Guidance Computer

CM - Command Module (Colossus) software

LM - Lunar Module (Luminary) Software

https://www.youtube.com/@CuriousMarc

Sudoku 17

010000009000300800000000600000012400703000000500000000800600000000040020000700050

030600080019000000000020000700000450000031000200000000400800000060500000000000900

052400000000070100000000000000802000300000600090500000106030000000000089700000000

092300000000080100000000000107040000000000065800000000060502000400000700000900000

800000001000950000000000000000070420301600000000000000040000570600308000000000200

030500020010000000000090000607000804200300000500000900700080400000100000000000000

200000500000080000000070000031600000000000470000000800000209030400500000060000001

700400000000000500000000300060000890000250000001000000300000042000006070010080000

081000000000800300000000470400000020060300000000900000700021000000050609000000000

070040000000050000000000060000700208900000400000100000300000150008306000000000090

These are minimal Sudoku puzzles using most distinct numbers

Test Management - Interview Questions

https://resumecat.com/career/quality-assurance-manager/interview-questions

https://www.guru99.com/top-20-test-manager-interview-questions.html

https://www.invensislearning.com/blog/quality-manager-interview-questions/

https://www.qualitygurus.com/quality-manager-interview-questions-and-responses/

https://www.sprintzeal.com/blog/quality-manager-interview-questions

https://www.talentlyft.com/en/resources/quality-assurance-manager-interview-question

https://www.testgorilla.com/blog/management-situational-interview-questions/

Binary Tree

https://www.youtube.com/watch?v=76dhtgZt38A 

https://www.youtube.com/watch?v=U1JYwHcFfso

Recursion

https://en.wikipedia.org/wiki/Recursion

https://en.wikipedia.org/wiki/Recursion_(computer_science)

https://www.youtube.com/watch?v=GOs07Kn2W1E

Base Case & Recursion Case

Base case can be implicit (like end of a for loop)

problems solvable in this space:

1. Tower of Hanoi
2. Binary Search - sorted array
3. Merge Sort
4. File System, size
5. Factorial
6. Fibonacci sequence

Iterative method is alternate to recursion

DSA - Data Structure and Algorithm

 https://www.geeksforgeeks.org/learn-data-structures-and-algorithms-dsa-tutorial/

    https://www.geeksforgeeks.org/top-50-array-coding-problems-for-interviews/

    https://www.geeksforgeeks.org/explore?page=1&category=Arrays&sortBy=submissions

https://www.w3schools.com/dsa/

https://www.tutorialspoint.com/data_structures_algorithms/index.htm

https://www.programiz.com/dsa

Specifications in Machine readable format

1. Backus–Naur form - notation used to describe the syntax of programming languages or other formal languages
2. OpenAPI Specification - describing, producing, consuming, and visualizing RESTful web services
1. Arazzo specification

OpenAPI Generator landscape

1. LibLab
2. apimatic
3. appwrite
4. Fern
5. Microsoft Kiota
6. Konfig
7. Readme.io/API
8. RESTUnited
9. Speakeasy
10. Stainless

Templates:

1. Twig Template
2. Mustache & Handlebars

Specifications:

1. Swagger 2
2. OpenAPI 3
3. RAML 1.0 
4. RAML 0.8
5. Postman 2.0
6. Postman 1.0
7. API Blueprint 1A

Misc

1. Microsoft OpenAPI .Net
2. Security Testing
3. Specmatic Contract Driven Development

1. https://github.com/microsoft/restler-fuzzer
2. https://owasp.org/www-project-web-security-testing-guide/latest/4-Web_Application_Security_Testing/05-Authorization_Testing/04-Testing_for_Insecure_Direct_Object_References
3. https://www.zaproxy.org/docs/desktop/addons/fuzzer/
4. https://github.com/aress31/openapi-parser
5. https://github.com/Yelp/fuzz-lightyear
1. https://engineeringblog.yelp.com/2020/01/automated-idor-discovery-through-stateful-swagger-fuzzing.html
6. https://42crunch.com/api-security-platform/
7. https://portswigger.net/burp
8. https://keploy.io/

Selenium

Components of Selenium

1. Selenium IDE
2. Selenium RC
3. Selenium Webdriver - communicated with Browser
4. Selenium Grid

Limitations

1. Image not supported
2. no reports
3. No RestAPI or Database support
4. No Mobile testing
5. Can not handle popup
6. Dynamic content????

WebDriver Capabilities (not not in RC):

1. multiple frames
2. pop-ups
3. browser windows
4. alerts
5. page navigation
6. drag & drop
7. Ajax

Object Repository

Wait:

1. Implicit - wait for
2. Explicit
1. WebDriver wait
2. Fluent wait

Locators types

1. id
2. name
3. link Text
4. Partial Link Text
5. CSS Selector
6. xpath

FindElement/elements

1. driver.findElement(By.id("")

Size of the Window

1. maximize()
2. getSize()
3. setSize()
4. JavaScriptExecutor: executeScript - executeAsyncScript - for scroll

POM - Page Object Model

Page Factory

Action Class - mouse/keyboard

drag and drop, control key

Alerts

1. void dismiss()
2. void accept()
3. String getText()
4. void sendKeys(String stringToSend)

Robot (Native) - mouse & keyboard

1. upload files
2. keyPress()
   
3. keyRelease()
4. MouseMove()
5. MousePress()
6. mouseRelease()

Screenshot

1. File src = ((TakeScreenshot)driver)getScreenshotAs(OutputType FILE);

Window Handle

1. get.windowhandle()
2. get.windowhandles()
3. set
4. switch to
5. action

Listeners

1. Event Listeners

Assert and verify

Proxy

String PROXY="192.168/0.0:4444";

Capability.setCapability(CapabilityType.PROXY,proxy)

Network Latency = driver.manage.pageLoadingTime()

Serversidelog: java -jar.jar -log selenium.log

Exceptions:

1. WebDriverException
2. NoAlertPresentException
3. NoSuchElementException
4. NoSuchFrameException
5. NoSuchWindowException
6. Timeout

driver.switchTo.frame() - name, number