The O(n) Club: Deleting a Linked List Node When All You Have Is the Node (Not the Head!)
The O(n) Club: Deleting a Linked List Node When All You Have Is the Node (Not the Head!) ⚡ TL;DR Your mission: delete a node in a singly…
The O(n) Club: Valid Palindrome II: Palindrome With Training Wheels
The O(n) Club: Valid Palindrome II – Palindrome With Training Wheels ⚡ TL;DR Basically, you get one free pass. Given a string, can it be a…
The Mutex Club: Why Your Data Cries for a Mutex
Thread-Safe Code: Why Your Data Cries for a Mutex Ever juggled n8n workflows, LangChain calls, and a Pinecone index at 3 a.m. only to find…
The Mutex Club: Taming Multithreading Without Getting Clubbed
TL;DR; Multithreading: Miracle Worker or Mayhem Maker?\n\nMultithreading promises lightning-fast performance and silky-smooth UIs—until one…
The O(n) Club: Accounts Merge: When Emails Collide, but Names Are Lying
The O(n) Club: Accounts Merge — When Emails Collide, but Names Are Lying ⚡ TL;DR If two user accounts share an email, guess what?…
The O(n) Club: When String Calculators Attack (a.k.a. LeetCode 227, but Funnier)
The O(n) Club: When String Calculators Attack (a.k.a. LeetCode 227, but Funnier) ⚡ TL;DR Given a string with numbers and +, -, *, /, compute…
The Mutex Club: Zen and the Art of Observability for Multithreaded Java
The Curse (and Cure) of Concurrent Java Building concurrent Java apps is like running a hotel where every guest has a duplicate key. Things…
The Mutex Club: Mastering Monitors, Locks & Conditions
The Mutex Club: Mastering Monitors, Locks & Conditions ## Key Insights # Mutex (Lock) A mutex is the bouncer of your code’s nightclub—only…
The O(n) Club: Next Greater Element II: When Arrays Forget Where Home Is
The O(n) Club: Next Greater Element II—When Arrays Forget Where Home Is ⚡ TL;DR Find the next greater number for each element in a circular…
The O(n) Club: Wildcard Word Search—Why Brute Force is for Masochists
The O(n) Club: Wildcard Word Search—Why Brute Force is for Masochists ⚡ TL;DR If your plan is ‘dump words in an ArrayList and hope your…