The Mutex Club: Why Mutexes Trump Thread States š§
The Thread State Illusion Imagine your app as a nightclub: thread states are the DJs mixing tracksārunning, waiting, sleepingāand you can…
The Mutex Club: Why ThreadGroup Is a Legacy Relic (and What To Use Instead)
Key Insights # Grouping Without Real Control ThreadGroup lets you form thread hierarchies, peek at active counts, set priorities, and handle…
The O(n) Club: Partition ListāHow to Herd Nodes Without Losing Your Mind
The O(n) Club: Partition ListāHow to Herd Nodes Without Losing Your Mind ā” TL;DR Sort a linked list so that values less than x go before…
The O(n) Club: Convert BST to Greater TreeāBecause Your Nodes Have FOMO
The O(n) Club: Convert BST to Greater TreeāBecause Your Nodes Have FOMO ā” TL;DR Want every node in your BST to brag about all the higher…
The Mutex Club: Why Thread.setPriority() Is More Hint Than Hammer
Key Insights Thread.setPriority() is Javaās way of whispering sweet nothings to the OS schedulerāmore polite hint than SWAT team order. Its…
The Mutex Club: Thread.setDaemon() Demystified
Introduction Thread.setDaemon() feels like a secret handshake into Javaās background circle: slap setDaemon(true) on a Thread and itāll cower…
The O(n) Club: Two Sum IV ā The BST Showdown You Didn’t Know You Needed
The O(n) Club: Two Sum IV ā The BST Showdown You Didn’t Know You Needed ā” TL;DR Given a binary search tree and a target k, does any pair…
The O(n) Club: Add Two Numbers II: Making Linked Lists Add Like 80s Calculators
The O(n) Club: Add Two Numbers IIāMaking Linked Lists Add Like 80s Calculators ā” TL;DR LeetCode 445 is here to ruin your autopilot! Youāre…
The Mutex Club: Why Java’s Thread.interrupt() Is a Flaky Nudge, Not a Nuking Button
The Interrupt Myth Think Thread.interrupt() is your in-code panic button? Think smaller. This call just sets a bit in your threadās internal…
The Mutex Club: Lockstep or Landmine?
Thread.join(): Javaās Secret HandshakeāUntil It Isnāt Think of Thread.join() as a polite bouncer telling your code, “No entry until the…