The Mutex Club: Why Deadlock Is the Dinner Party Spoiler
Key Insights Deadlock is the system crash you didn’t ask for. In the classic Dining Philosophers scenario, five diners (ahem, threads) each…
The O(n) Club: Remove Duplicate Letters: Stack Attacks and Lex Wins
The O(n) Club: Remove Duplicate Letters—Stack Attacks and Lex Wins ⚡ TL;DR Want one of each letter from your string, perfectly alphabetized?…
The O(n) Club: How to Handle Array Doppelgängers Without Losing Your Sanity
The O(n) Club: How to Handle Array Doppelgängers Without Losing Your Sanity ⚡ TL;DR This is that magical Leetcode problem where duplicates…
The Mutex Club: Golden Rules for Thread Safety 🔒
Key Insights # Minimize Locked Regions Hold locks only around the critical state you must protect. Avoid any I/O, callbacks, or slow work…
The Mutex Club: Why Smart APIs Dodge Deadlocks
Key Insights # Concurrency ≠ Parallelism Throwing more threads at your API isn’t like adding cooks to a kitchen—too many just clutter the…
The O(n) Club: Max Consecutive Ones III: Where Sliding Windows Beat Your WiFi and Your Bugs
The O(n) Club: Max Consecutive Ones III—Where Sliding Windows Beat Your WiFi and Your Bugs ⚡ TL;DR Want to binge 1s in your binary array by…
The O(n) Club: Exponentiation by Squaring in Java – Because Your CPU Has Feelings Too
The O(n) Club: Exponentiation by Squaring in Java – Because Your CPU Has Feelings Too ⚡ TL;DR If you’re still looping through n…
The Mutex Club: How Fair Locks Defeat Starvation Once and for All
Key Insights – Starvation happens when a speedy worker thread keeps cutting the line, leaving slower tasks perpetually hungry—unlike…
The Mutex Club: Why Thread Models and Mutexes Make or Break Your App
Understanding Mutexes in Your App A mutex (mutual exclusion lock) hands exclusive access to one thread—picture a VIP pass to your shared data.…
The O(n) Club: Dungeon Game – Save Your Knight, Your Code, and Your Sanity
The O(n) Club: Dungeon Game – Save Your Knight, Your Code, and Your Sanity ⚡ TL;DR You’ve got a grid of rooms, each giving or stealing…