The Mutex Club: What Really Happens During Context Switching
Key Insights ### What Is Context Switching? Imagine a barista flipping between espresso shots and latte art at lightning speed. Context…
The O(n) Club: Stock Profit With Cooldown: Because Wall Street Needs Naps Too
The O(n) Club: Stock Profit With Cooldown—Because Wall Street Needs Naps Too ⚡ TL;DR If you want to buy and sell stocks for max profit but…
The O(n) Club: Best Time to Buy and Sell Stock III: Survive the Two-Trade Gauntlet
The O(n) Club: Best Time to Buy and Sell Stock III — Survive the Two-Trade Gauntlet ⚡ TL;DR Buy, sell, buy, sell—can you time these two trades…
The Mutex Club: Mastering the Java Memory Model
Key Insights ### Happens-Before: Guaranteeing Order in the Wild Think of threads as chefs in a mad kitchen and the Java Memory Model (JMM) as…
The Mutex Club: User vs Kernel Threads: Know the Difference
The CPU Kitchen: When Threads Become Culinary Staff Imagine your CPU as a bustling kitchen. User threads are the sous-chefs—light, nimble, and…
The O(n) Club: 4Sum — When Just One More Loop Feels Like a Crime
The O(n) Club: 4Sum — When Just One More Loop Feels Like a Crime ⚡ TL;DR Find four numbers in your array that make a target sum. Yes, you…
The O(n) Club: Kth Smallest in a Sorted Matrix: Aka Why Binary Search Beats Brute Force (and Caffeine)
The O(n) Club: Kth Smallest in a Sorted Matrix: Aka Why Binary Search Beats Brute Force (and Caffeine) ⚡ TL;DR You want the kth smallest…
The Mutex Club: Sync or Async? Let’s Settle This
Ready for the truth about mutexes? Let’s slice through the jargon like rogue sushi chefs tearing up a conveyor belt. 🍣🔪 ## Key Insights: Sync…
The Mutex Club: Thread Safety Without the Pain
Introduction Imagine a chef juggling flaming spatulas in a crowded kitchen—each spatula wants the same ingredient, and if they collide,…
The O(n) Club: Longest Common Subsequence – Why Your Files and DNA Both Need Therapy
The O(n) Club: Longest Common Subsequence – Why Your Files and DNA Both Need Therapy ⚡ TL;DR LCS: finding the longest sequence in two…