The O(n) Club: Find the Town Judge—Or the Search for the Ultimate Influencer
The O(n) Club: Find the Town Judge—Or the Search for the Ultimate Influencer ⚡ TL;DR You’re looking for the one person in town everyone…
The O(n) Club: Roman to Integer — Why Does ‘IX’ Always Betray Me?
The O(n) Club: Roman to Integer — Why Does ‘IX’ Always Betray Me? ⚡ TL;DR Roman numerals aren’t just fancy birthday cake icing—they come…
The O(n) Club: Maximum XOR of Two Numbers in an Array: Ditch Loops, Grab Bits
The O(n) Club: Maximum XOR of Two Numbers in an Array: Ditch Loops, Grab Bits ⚡ TL;DR Find the biggest XOR between any two numbers in an…
The Mutex Club: Mastering Java’s CountDownLatch for Smooth Thread Races
CountDownLatch at a Glance If your Java app is juggling multiple parallel tasks and you’d rather not let performance sprint off before setup…
The O(n) Club: Implement Queue Using Stacks — Stacking Your Odds
The O(n) Club: Implement Queue Using Stacks — Stacking Your Odds ⚡ TL;DR Turn two cranky stacks into a well-behaved queue. Only flip stacks…
The O(n) Club: Pairs of Songs With Total Durations Divisible by 60 — Now That’s What I Call Modulo!
The O(n) Club: Pairs of Songs With Total Durations Divisible by 60 — Now That’s What I Call Modulo! ⚡ TL;DR If you want to pair up songs so…
The Mutex Club: exceptionally() — Your Fire Drill or Deadlock Disaster
TL;DR Locking your code with a mutex is only half the battle. exceptionally() is your emergency exit when errors strike inside critical…
The Mutex Club: allOf() vs .every() – Fast-Fail Validation in JS
Key Insights ### Core Behavior allOf(), in most JS frameworks and validation libraries, is a thin coat of varnish over…
The O(n) Club: Add Strings — When Java Says ‘No Cheating’, Do This
The O(n) Club: Add Strings — When Java Says ‘No Cheating’, Do This ⚡ TL;DR Add two monster-sized numbers given as strings. You…
The O(n) Club: Maximum Profit in Job Scheduling: How Not to Overbook Your Calendar (or Lose Your Mind)
The O(n) Club: Maximum Profit in Job Scheduling – How Not to Overbook Your Calendar (or Lose Your Mind) ⚡ TL;DR You’re given jobs with a…