The O(n) Club: Binary Search Tree Iterator: Lazy Traversal for Stack-Savvy Devs
The O(n) Club: Binary Search Tree Iterator: Lazy Traversal for Stack-Savvy Devs ⚡ TL;DR You need to traverse a BST in-order, get the next…
The Mutex Club: Thread Pools: Fixed, Cached, and Beyond
Why Thread Pools Are Your Backend’s Bodyguards Thread pools are the bouncers of your backend—no pass, no entry. A fixed thread pool is your…
The Mutex Club: Monitors, Locks, and Conditions Explained
The Mutex Club: Key Insights into Thread Safety’s VIP List ## Thread Safety Is a Dance Floor, Not a Rodeo Race conditions are the unwanted…
The O(n) Club: Shortest Unsorted Subarray — Only Sort What’s Broken
The O(n) Club: Shortest Unsorted Subarray — Only Sort What’s Broken ⚡ TL;DR Given an array of integers, find the length of the shortest…
The O(n) Club: Lowest Common Ancestor in a BST — The Ancestor Hunt Nobody Asked For
The O(n) Club: Lowest Common Ancestor in a BST — The Ancestor Hunt Nobody Asked For ⚡ TL;DR Want to find the nearest shared ancestor in a BST?…
The Mutex Club: Fixed vs Cached vs SingleThreadPool
Meet the Mutex Club: Java’s Thread Pools in a Nutshell Welcome to Java’s hottest spot—The Mutex Club—where concurrency contenders sip…
The Mutex Club: The Complete Guide to ExecutorService
The Mutex Club: Taming the Thread Jungle with ExecutorService ## Key Insights ### Decoupling Task Submission from Execution Imagine cooking an…
The O(n) Club: Same Tree: If You Flattened It, You Broke It
The O(n) Club: Same Tree — If You Flattened It, You Broke It ⚡ TL;DR Stop trying to flatten, traverse, or philosophize about your trees. If…
The O(n) Club: Minimum Height Trees, or How to Avoid Roast CPU
The O(n) Club: Minimum Height Trees, or How to Avoid Roast CPU ⚡ TL;DR If you’re about to brute-force every possible root in a tree to…
The Mutex Club: Building Custom Locks in Java
Custom Locks in Java: The DIY Project That Bites Back Ever felt the urge to build your own lock in Java? Maybe you skimmed a Baeldung article,…