Deriving the OLS Estimator
How to derive the OLS Estimator with matrix notation and a tour of math typesetting using markdown with the help of KaTeX.
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Writing to improve myself and help others do the same. Sharing my thoughts on tech, finance, sports, and more.
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Markdown Guide
Markdown cheatsheet for all your blogging needs - headers, lists, images, tables and more! An illustrated guide based on GitHub Flavored Markdown.
Images in Next.js
In this article we introduce adding images in the tailwind starter blog and the benefits and limitations of the next/image component.
Introducing Tailwind Nextjs Starter Blog
Looking for a performant, out of the box template, with all the best in web technology to support your blogging needs? Checkout the Tailwind Nextjs Starter Blog template.
The Time Machine
The Time Traveller (for so it will be convenient to speak of him) was expounding a recondite matter to us. His pale grey eyes shone and twinkled, and his usually pale face was flushed and animated...
It’s All the Same Problems in Different Clothes
Most tools in modern software engineering belong to recurring “problem families,” so learning new tools is primarily a mapping exercise, not a reinvention of knowledge.
The Things You Can See Only When You Slow Down: Book Review
My thoughts on a book I heard of a few years ago but only recently found some time to dive into
Open Exchanges: Lessons in Building, Sharing, and Growing Trust in Public — Part III
Exploring how public, verifiable security challenges and read-only system access can replace promises with proof — and why authorization integrity matters more than most people think.
Open Exchanges — Part VI: Designing for Skeptics
Why modern systems should be built for people who doubt claims by default — and how designing for skeptics produces better architectures, clearer guarantees, and stronger trust.
Open Exchanges — Part VI: Token Mechanics & Wallet Integration
How users connect wallets, deposit and withdraw funds, and trade tokens — demonstrating end-to-end flows with explicit risk boundaries, verifiable state transitions, and operational transparency.
Open Exchanges: Lessons in Building, Sharing, and Growing Trust in Public — Part I
Why we’re creating an exchange in public, the principles guiding our decisions, and how we focus on building real relationships with users, collaborators, and investors, not just code or pitch decks.
Open Exchanges: Lessons in Building, Sharing, and Growing Trust in Public — Part II
A walkthrough of our trading platform architecture, showing how the web client, services, and data layers interact with Protobuf, Redis, and Postgres — and why these choices matter for transparency and reliability.
Open Exchanges: Lessons in Building, Sharing, and Growing Trust in Public — Part IV
How transparency, high-signal public artifacts, and verifiable challenges create trust, attract the right attention, and generate inbound opportunities for founders.
Open Exchanges: Lessons in Building, Sharing, and Growing Trust in Public — Part V
How operational transparency, public metrics, and verifiable system performance can be treated as a core feature, building trust with users, investors, and the community.
Futures Trading — A Practical Introduction
An approachable introduction to futures contracts: what they are, how they work, common uses (hedging, speculation), key terms, and the risks investors should understand.
Navigators in Flutter
Drawer, Tab & Stack Navigators are fundamental build blocks to all large dynamic mobile apps. Here I demo some of the nuances of working with them.
What is an RDO and how does it differ from an IPO?
A clear, practical guide to Registered Direct Offerings (RDOs): what they are, why companies use them, how they compare to IPOs, and what investors should consider.
Bake Suite: Cake & Art
Adding illustrative features which enable customers to see the final product(cake) before its made & enabling bakeries to customize colors. Also adding Canva integration
Bug Report on Reddit: Lessons from a Duplicate Posts Glitch
Even industry leaders like Reddit can have bugs in production. This post highlights a duplicate posts issue in Reddit's mobile app and encourages developers and hiring managers to view such bugs as opportunities for growth, learning, and empathy.
Handling Nullable Fields in Dart: Cleaner Models for Lists and Details
Learn how to avoid messy nullable fields in Dart models by using inheritance and composition. Discover best practices for structuring your data classes for both list and detail views, improving code clarity and maintainability.
FastAPI + GraphQL + SQLAlchemy Starter Template
A starter template for building Python APIs using FastAPI, GraphQL, and SQLAlchemy. Includes example resources and project structure for rapid development.
DKNG $40/$42 1/16/26 Call Debit Spread
Markets over react to positive news by HOOD on growth in the Fantasy Sports Betting industry priming DKNG for a bounce
System Design: Getting Started with Google Cloud Memory Store (Redis)
Learn how to set up and connect to Google Cloud Memory Store (Redis) from Cloud Run using a VPC connector.
System Design: Understanding Google Cloud VPC Connectors
Learn what GCP VPC Connectors are, why they matter, and how to use them to enable secure private networking for your serverless applications.
System Design: Google Cloud Secret Manager
Learn what Google Cloud Secret Manager is, its benefits, and how to securely manage secrets for your applications in GCP.
System Design: Comparing Background Job Techniques in GCP: App Schedulers, Cloud Scheduler, and Cloud Run Jobs
Explore the pros and cons of three popular approaches for scheduling and running background jobs in Google Cloud: App Schedulers, Cloud Scheduler, and Cloud Run Jobs.
System Design: Getting Started with Google Cloud Scheduler
Learn what Google Cloud Scheduler is, its benefits, and how to set up a scheduled job in Google Cloud.
System Design: Automating Deployments with Google Cloud Build Triggers
Learn how Cloud Build Triggers automate CI/CD workflows in Google Cloud, enabling automatic builds and deployments for your applications.
System Design: Getting Started with Google Cloud Run: Serverless Containers Made Easy
Learn what Google Cloud Run is, its benefits, and how to deploy containerized applications with ease.
Opinion: Vibe Coding Without Coders... AKA Whack-a-Mole
AI-driven vibe coding makes simple apps effortless, but when projects demand nuance, it turns into a frustrating cycle of fixing one issue only for another to pop up.
Lag Function: Access data in a previous row in the same result set without having to join the table to itself.
How to use the SQL LAG window function to compare current and previous row values, with practical query and table output.
Opinion: AI as a Fractal: Signal, Noise, and Recursive Nature of Progress
AI expands knowledge like a fractal—each layer of clarity reveals new noise, trapping us in a recursive race to find true signal.
Intro to Trees Theory with Python
An introduction to Tree's theory using Leet Code problems and Python
System Design: GraphQL Crash Course
A practical guide to understanding GraphQL in system design — how it compares to REST, when to use it, and the key concepts behind building flexible and efficient APIs.
System Design: Must-Know Numbers
A concise reference of key numbers every engineer should know for system design interviews and rough capacity estimations — from latency benchmarks to storage calculations.
AI Search Agents for 15 Puzzle & Maze Path Finding
Agents, state spaces, goal tests, path costs & more
UV: Package Manager
🚀 A single tool to replace pip, pip-tools, pipx, poetry, pyenv, twine, virtualenv, and more.
How to enable hot reloading in Flask?
Restarting a server to see changes reflected call kill velocity when working. Enable Hot Reloading to see changes to the app reflected from your code without the need for a server Restart
Algorithms: Priority Queue
Canonical Priority Queue problems on LeetCode
System Design: Build a auditing solution for collecting metadata on users of your system.
Create an auditing system for enterprise applications which tracks user requests, resources touched & action taken. Reuse logic by leveraging hooks so that code is clean & concise. By utilizing middlewares, events & closures we're able to capture the details of requests on all our resources without duplicating code.
System Design: Build a Message Queue
Decouple, distribute, and scale: A message queue lets your app handle tasks asynchronously, improving performance, reliability, and system flexibility.
System Design: Add Dynamic Themes & Light/Dark Mode in Flutter using Provider & Notify Listeners
How to add Light/Dark mode to a Flutter application quick and easy using Flutter's built in Provider & Notification modules. Allow users to change the app's theme as well
Pair Trading: A Quantitative Approach
A walkthrough of pair trading, portfolio construction, and mean-variance optimization in quant finance.
Multivariable Calculus: The Fundamental Theorems
A guide to the major theorems of multivariable calculus, with LaTeX examples and explanations.
Key Symbols in Quantitative Finance
A reference guide to the most important symbols, their original names, and meanings in quantitative finance.
Indicators: Premium Flow
Learn how premium flow trends help traders identify optimal entry and exit points for assets by analyzing market sentiment and momentum.
Slippage in Trading: What It Is and How to Avoid It
Learn what slippage is, why it happens, and how traders can minimize its impact when buying or selling in financial markets.
Institutional vs. Retail Investors: Key Differences
Explore the differences between institutional and retail investors, including their characteristics, strategies, and impact on financial markets.
Primary vs. Secondary Markets: Key Differences
Learn the difference between primary and secondary markets in finance, including how securities are issued and traded, and why both are important for investors.
Upside vs. Downside in Trading
Learn the meaning of upside and downside in trading—how these terms help assess potential gains and risks before entering a position.
What is a Warrant in Finance?
Discover what a warrant is in finance, how it works, and how it compares to options. Learn about exercise price, expiration, and the role warrants play in trading and investing.
Calculus for Quantitative Finance
Essential calculus concepts and techniques for success in quantitative finance.
Mathematics for Quantitative Finance
Overview of the essential mathematics—linear algebra, statistics, calculus, and more—for success in quantitative finance.
Understanding Implied Volatility Rank (IVR)
A comprehensive guide to Implied Volatility Rank (IVR), its calculation, significance in options trading, and practical applications.
Premium Flow with Z Scores
How quant traders use premium flow and z scores to spot unusual options activity and trading opportunities.
Understanding the Put-Call Ratio in Options Trading
Explore the Put-Call Ratio, its calculation, interpretation, and role as a sentiment indicator in financial markets.
Relative Strength Index (RSI): What It Is, How It Works, and Formula
A guide to understanding and using the Relative Strength Index (RSI) in finance.
Quadruple Witching Explained: Impact on Stock Market and Key Dates
Learn what quadruple witching is, why it matters for traders, and how it affects stock market volatility.
Net Asset Value
Learn what Net Asset Value (NAV) means, why it matters for investors, and how to calculate it for investment funds.
Extrinsic Value in Finance: What It Means and Why It Matters
Understand the concept of extrinsic value in finance, especially in options trading, and learn how it affects pricing and investment decisions.
Intrinsic Value in Finance: What It Means and Why It Matters
Learn what intrinsic value means in finance, how it is calculated, and why it is important for investors and option traders.
Mutual Funds: What They Are and How They Work
Learn what mutual funds are, how they operate, their benefits and drawbacks, and why they are a popular investment choice for individuals and retirement accounts.
Open-End Fund: Definition, Example, Pros and Cons
Discover how open-end funds work, their advantages and disadvantages, and why they are the most common investment vehicle for mutual funds and retirement accounts.
How a Closed-End Fund Works and Differs From an Open-End Fund
Learn how closed-end funds operate, how they differ from open-end funds, and what makes their share structure and trading unique.
Quant Finance: Understanding the Black-Scholes Formula for Option Pricing
A practical guide to the Black-Scholes formula, its significance in finance, and how to calculate option prices using Python.
Finance: The Greeks
A practical guide to Delta, Gamma, Theta, Vega, and Rho for options traders. Learn how each Greek affects option pricing and risk management.
Finance: Understanding Open Frac as an Options Signal
Learn how the open frac indicator helps quantify opening vs. closing volume in options markets, and how it can be used as a signal in quantitative finance.
Finance: Options Trading Strategies
Explore a comprehensive range of options trading strategies—from basic hedging and income generation to advanced volatility and arbitrage plays. Learn how each strategy works, its risk-reward profile, and how finance professionals use options to manage portfolios, enhance returns, and structure custom exposures.
Exchange-Traded Fund(ETF): What It Is and How to Invest
Explore what exchange-traded funds (ETFs) are, how they work, and why they are a popular investment choice for gaining diversified market exposure.
Finance: Strangles in Options Trading
Strangles: Flexible Strategies for Options Traders. Discover how strangle strategies work and their role in options trading.
Finance: Straddles in Options Trading
Straddles: A Versatile Option Investment Strategy. Explore how straddles work and their role in option investment strategies.
Finance: Condors in Options Trading
Condors: Balancing Risk and Reward in Options Trading. Learn how condor strategies work and their place in option investing.
Finance: Spreads in Options Trading
A comprehensive guide to option spread strategies, including vertical, credit, and debit spreads. Learn how spreads manage risk, reduce cost, and enhance returns.
Finance: Introduction to Options
Options aren’t just speculative bets—they serve as insurance, income generators, leverage tools, and volatility plays. Finance experts use them to reshape risk-reward profiles, hedge portfolios, and engineer custom exposures that traditional assets alone can’t provide.
Question: How do I deal with complexity?
How you approach complicated problems or systems. A strong answer emphasizes breaking problems into smaller parts, prioritizing tasks, simplifying patterns, collaborating with others, and iterating solutions step by step.
Question: How do I lead?
Explore your leadership style. A strong answer highlights guiding a team by setting clear goals, communicating effectively, supporting and mentoring team members, making informed decisions, and fostering collaboration and accountability.
System Design: Bit.ly
A concise guide to the essential principles of system design, covering scalability, reliability, maintainability, availability, and trade-offs. This post introduces the core building blocks you need to design robust, efficient, and scalable systems—crucial knowledge for system design interviews.
System Design: Distributed Systems
A distributed system is a collection of independent computers that appear to the users as a single coherent system. The key goal is to achieve scalability, fault tolerance, and high availability while maintaining consistency and performance.
System Design: Automated Integration Testing with Appium & Mocha
Manually repeating these tests is costly and time consuming. Once created, automated tests can be run over and over again at no additional cost and they are much faster than manual tests. Automated software testing can reduce the time to run repetitive tests from days to hours.
Opinion: Flutter vs React Native: Why I choose Flutter before React Native
Reasons why Flutter is my framework of choice over React Native for developing cross-platform apps on desktop, mobile, & web.
Logging app load times with Firebase
Usually an easy process but not always. With Flutter & Firebase logging hasn't been straight forward. The steps I've taken and the behavior I'm observing logging the duration of rootBundle.load() to Firebase.
Guide: Git Pre-Commit Hooks Explained with Examples
Learn how to use Git pre-commit hooks to automatically run checks or scripts before committing code, with practical examples using shell and Husky.
How to Rebase in Git (With Examples)
Learn how to rebase in Git with step-by-step examples. Understand the difference between merge and rebase, and how to resolve conflicts when rebasing.
System Design: SQL Server setup using Azure SQL Edge Docker image
How to setup SQL Server using Azure SQL Edge docker image and check its working correctly. Snippets of TSQL
React Native configuring Firebase dev and prod environments
How to configure React Native to choose the correct Firebase configuration file based on the build environment.
Guide: Fundamental Mobile Developer Skills
A list of the necessary skills to qualify as a mobile develop in a framework
Guide: How to stage part of a dirty file
When we want to commit part of a file to git we can!
Data Structures & Algorithms in Python
Overview of a new book I got.
Cognitive Dissonance: When schools of thought conflict
Every now and then we encounter ideas that by themselves seem great but upon deeper inspection we realize might not always be the care. A guide to navigating conflicting schools of thought on how to live life.
System Design: Serverless CRUD app with AWS Lambda and DynamoDB
How to use AWS Lambda and DynamoDB
Project: Semantic Stoic
Building a Duolingo/Quizlet/Leetcode/TikTok side project because I thought these apps were all awesome and wanted to combine attributes of each one of them into a single learning platform.
Flutter lacks support for WebView
Flutter works in many situations but it doesn't work for all.
Python: Useful Heap Methods
A few methods on the heap data structure
How to create a closure in Ruby
How to create a function which has access to variables defined outside its block scope
Setup Java & Spring Boot
Requirements for setting up Java working environment using VSCode
System Design: Containerization of Microservices using Docker
Containerize multiple services using Docker for cloud deployment. Using NPM, ExpressJS, NodeJS, and Docker we create two microservices that work together to create a web app which help users learn about the wizards of Hogwarts.
Algorithms: Dynamic Programming Problems
A review of dynamic programming and the techniques used to implement it including Brute Force, Top Down Memoization, & Bottom Up Tabulation.
Data Structures & Algorithms: Graph Theory 101
A collection of graph coding problems and their solutions with Big O time complexity. Solutions include not only brute force but optimized solutions as well.
Data Structures & Algorithms: Graph Theory 101
A collection of graph coding problems and their solutions with Big O time complexity. Solutions include not only brute force but optimized solutions as well.
Algorithms: Priority Queues
A review of problems which involve using a Priority Queue to solve efficiently.
Intro to Graph Theory with Python
An introduction to graph theory using Leet Code problems and Python
Data Structures & Algorithms: How to create a Hash Table?
How to implement a custom Hash Table, analogous to a dict, using simpler data types & a hash function.
What is concurrency in Go?
Concurrency is the ability of program to handle multiple tasks simultaneously. Go uses go routines to achieve this, also known as concurrency.
System Design: Flutter Web App Production Deployment with Netlify
Multi platform frameworks like Flutter means we can build web versions of our app simultaneously with mobile. Use Netlify to reach users on the web at the same time as iOS & Android by adding a few configurations and leveraging it's CI/CD pipeline to have web builds in no time.
Project: How to build TikTok with Flutter? Part 2
The steps I would take to clone TikTok using Flutter. Including project structure, navigation, code snippets & more.
How to build Poker with Flutter
The steps I took to built a poker game with Flutter
Project: How to build TikTok with Flutter? Part 1
The steps I would take to clone TikTok using Flutter. Including project structure, navigation, code snippets & more.
How do I prepare for a AWS Cloud Practitioner Certification?
Steps to successfully prepare for the AWS Cloud Practitioner Certification
Algorithms: Dijkstra's Algorithm
One of the most famous algorithms in the field of graph theory. Useful when finding the shortest paths between nodes in a weighted graph.
Algorithms: Tree Traversals
Most common traversal orders used with binary trees.
Cheat Sheet: Big O Notation
Big O Notation's common complexity cases to familiarize oneself with.
Object Oriented Programming
The principles which guide object oriented programming
Introducing Multi-part Posts with Nested Routing
The blog template supports posts in nested sub-folders. This can be used to group posts of similar content e.g. a multi-part course. This post is itself an example of a nested route!
Flutter - Android app connection refused to local server when iOS & web work
Platform specific solution for Android connectivity issues while developing with Flutter.
How to change Android app icon name programmatically based on the build type?
Change icon name based on build helping to identify which app is installed on our device quick & easy.
Leading vs. Lagging Indicators in Finance
Understand the difference between leading and lagging indicators—how they help predict or confirm economic and market trends, with practical examples for each.
Project: Royal Stock Exchange(RSE) - Flutter Time Series with Sync Fusion Charts - Part 5
Seeding database records for our clients, understanding our records data types, and validating/designing relationships between resources.
Project: Royal Stock Exchange(RSE) - How to Scale Our System to Millions? - Part 4
10,000 ft overview on how we plan to scale to our first 1,000,000 concurrent users
Project: Royal Stock Exchange(RSE) - First "Demo-able" Work - Part 3
Basic functionality of a stock exchange including Carousel Ticker, Line & Candlestick Charts, Portfolio page/screen & more.
Project: Royal Stock Exchange(RSE) - Seeding Stock Market data in SQL - Part 2
Seeding database records for our clients, understanding our records data types, and validating/designing relationships between resources.
Project: Royal Stock Exchange(RSE). Building a Full Stack Stock Exchange - Part 1
Build a stock exchange with .NET, Entity Framework, Flutter, Azure & more. Write backend code in C# & frontend using Flutter
Data Structures: A Quick Reference
An overview of data structures used to solve more complex problems in the field of computer science.
Data Structures & Algorithms: Patterns of Graph Problems
Patterns often used to solve Graph problems
Data Structures: Patterns of Tree Problems
Patterns often used to solve Tree problems
Data Structures: Pointers in C
Developing a better intuition on pointers & references.
Algorithms: Bubble Sort, Selection Sort, Insertion Sort, & Merge Sort
Commonly used sorting algorithms & their corresponding Big Os. Develop a better intuition on DSAs by examining canonical sorting algorithms in Python.
Top 10 MongoDB CLI Commands Every Developer Should Know
Master MongoDB’s CLI with these essential commands for exploring databases, managing collections, and running queries like a pro.
Cheat Sheet: Jetbrains commands/shortcuts
Jetbrains commands/shortcuts to get you up and running quick & easy within their family of IDEs including DataGrip, RubyMine, PyCharm, PhpStorm, IntelliJ & more
Cheat Sheet: Kubernetes commands/shortcuts
Kubernetes commands to get you up and running quick & easy.
Cheat Sheet: VIM commands/shortcuts
VIM commands to get you up and running quick & easy.
Cheat Sheet: VSCode commands/shortcuts
VSCode commands to get you up and running quick & easy.
System Design: Build a Database Cluster with Primary(Master) & Read Replica(Slave)
Create a DB Cluster which ensures high availability & fast responses with the use of a read Replica. Use Docker & Postgres to create a local database cluster where 1 DB is a master which we write to and 1 DB is a replica which copies data for higher availability & resiliency.
System Design: Build a Server Side Cache
Implement a server-side cache for faster and scalable systems. Caching results to DB queries can speed up server responses & by not overloading our DB with duplicate queries.
System Design: Build a Backend API with Flask
Create a RESTful web api using Flask, a micro web framework written in Python. Serve data to client side apps using REST & minimal setup thanks to the robust & simple Flask framework.
Design Patterns: Decorator
Allows behavior to be dynamically added to individual objects without modifying their code, promoting flexibility and adherence to the open/closed principle.
Design Patterns: Factory
Provides an interface for creating objects in a superclass, but allows subclasses to alter the type of objects that will be created, promoting flexibility and reusability in object creation.
Design Patterns: Observer
Defines a one-to-many dependency between objects, so when one object changes state, all its dependents are notified and updated automatically.
Design Patterns: Repository
Encapsulates the logic for accessing and managing data sources, providing a centralized interface for data operations while promoting separation of concerns and improving testability.
Design Patterns: Singleton
Ensures a class has only one instance, providing a single point of access for shared resources like logging, configuration, or database connections.
Guide: Over The Wire - Natas
Walkthrough of each level of Over the Wire's Natas series. Its a game which helps players master web server vulnerabilities testing
Guide: Over The Wire - Leviathan
Works with more advanced Linux concepts and privilege escalation. Walkthrough of each level of Over the Wire's Leviathan series. Its a CLI game which helps players master Linux, SSH, and much more.
Guide: Over The Wire - Bandit
Focuses on basic Linux command-line and file manipulation skills. Walkthrough of each level of Over the Wire's the Bandit series. It's a CLI game which helps players master Linux, SSH, and much more.
Understanding CSRF: How Cross-Site Request Forgery Attacks Work
Cross-Site Request Forgery (CSRF) is a web vulnerability where attackers trick users into submitting unwanted actions on a web application where they are authenticated. This guide explains how CSRF works, the risks it poses, and how to protect your applications using strategies like anti-CSRF tokens and same-site cookies.
Introduction: Over the Wire
OverTheWire is an online platform that hosts a collection of war-games designed to teach security concepts, Linux command-line skills, and basic hacking techniques in a hands-on way. The games are structured to progressively increase in difficulty, helping users learn and practice:
Understanding XSS: How Cross-Site Scripting Attacks Work
Cross-Site Scripting (XSS) is a common web vulnerability where attackers inject malicious scripts into trusted websites. This guide explains how XSS works, particularly stored XSS, and how attackers can steal user data by tricking the browser into executing malicious code.
LeetCode: 322. Coin Change
Solving programming problems in multiple languages to master syntax, data structures, and algorithms.
LeetCode: 70. Climbing Stairs
Solving programming problems in multiple languages to master syntax, data structures, and algorithms.
Demos Not Memos: Better Communication in Software Teams
Why showing is better than telling—how demos improve collaboration, bug reports, and feedback in software development.
Bike Shedding in Software Development
Learn what bike shedding means, why it happens in teams, and how to avoid wasting time on trivial issues.
Sprints in Agile Development
A practical guide to defining, running, and improving sprints in agile software teams.
Guide: Virtual Machines(VM) on ARM64 MacOS
How to install a virtual machine on an M1 Mac/ARM64 machine
System Design: Process Deep Dive
A concise guide to the essential principles of system design, covering scalability, reliability, maintainability, availability, and trade-offs. This post introduces the core building blocks you need to design robust, efficient, and scalable systems—crucial knowledge for system design interviews.
System Design: Process Overview
A concise guide to the essential processes of system design, covering scalability, reliability, maintainability, availability, and trade-offs. This post introduces the core building blocks you need to design robust, efficient, and scalable systems—crucial knowledge for system design interviews.
Order Books Explained: How Markets Match Buyers and Sellers
Discover how order books work in financial markets, how they match buyers and sellers, and why understanding price levels, book depth, and the bid-ask spread is essential for traders and investors.
LeetCode: 1. Two Sum
Solving programming problems in multiple languages to master syntax, data structures, and algorithms.
LeetCode: 121. Best Time to Buy and Sell Stock
Solving Leetcode problems to syntax of multiple languages and data structures & algorithms.
LeetCode: 16. 3Sum Closest
Solving programming problems in multiple languages to master syntax, data structures, and algorithms.
LeetCode: 200. Number of Islands
Solving programming problems in multiple languages to master syntax, data structures, and algorithms.
LeetCode: 217. Contains Duplicate
Solving programming problems in multiple languages to master syntax, data structures, and algorithms.
LeetCode: data-structures-algorithms
Solving programming problems in multiple languages to master syntax, data structures, and algorithms.
LeetCode: 239. Sliding Window Maximum
Solving programming problems in multiple languages to master syntax, data structures, and algorithms.
LeetCode: 252. Meeting Rooms
Solving programming problems in multiple languages to master syntax, data structures, and algorithms.
LeetCode: 253. Meeting Rooms II
Solving programming problems in multiple languages to master syntax, data structures, and algorithms.
LeetCode: data-structures-algorithms
Solving programming problems in multiple languages to master syntax, data structures, and algorithms.
LeetCode: 463. Island Perimeter
Solving programming problems in multiple languages to master syntax, data structures, and algorithms.
LeetCode: 743. Network Delay Time
Solving programming problems in multiple languages to master syntax, data structures, and algorithms.
Essential Discrete Mathematics Symbols Reference
A comprehensive cheatsheet covering mathematical symbols used in discrete mathematics, including set theory operations (union, intersection, subsets), logic symbols (quantifiers, implications), and notations for number sets (naturals, integers, rationals).
Mastering PostgreSQL: Beyond Basic SQL
Learn how PostgreSQL extends standard SQL with advanced features, reliability, and open-source flexibility. This guide covers practical commands, differences from generic SQL, and tips for effective database work.
Federal Reserve vs. Treasury Department: Key Differences
A clear breakdown of the roles, responsibilities, and differences between the U.S. Federal Reserve and the Treasury Department.
Mean, Median, and Mode: Understanding the Differences
Discover the key differences between mean, median, and mode in statistics. Learn how each measure of central tendency is calculated, when to use them, and why they matter in data analysis.
Variance vs. Standard Deviation: Measuring Data Spread
Understand the concepts of variance and standard deviation in statistics. Learn how they measure the spread of data, how to calculate them, and the key differences between the two.
Essential Statistics for Quant Finance
A guide to the key statistics areas you should master to excel in quantitative finance.
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