The O(n) Club: Maximum Product Subarray: Plot Twists, Negatives, and Contiguous Mayhem
The O(n) Club: Maximum Product Subarray — Plot Twists, Negatives, and Contiguous Mayhem ⚡ TL;DR You’re hunting for the contiguous…
The O(n) Club: Reverse Linked List — Because Losing Nodes Should Be Illegal
The O(n) Club: Reverse Linked List — Because Losing Nodes Should Be Illegal ⚡ TL;DR Reversing a singly linked list isn’t some black magic—just…
The O(n) Club: Longest Increasing Subsequence: Why Non-Contiguous Is Suddenly Cool
The O(n) Club: Longest Increasing Subsequence — Why Non-Contiguous Is Suddenly Cool ⚡ TL;DR You want the longest strictly increasing…
The O(n) Club: House Robber, Runtime Errors, and Stealing Like a Pro
The O(n) Club: House Robber, Runtime Errors, and Stealing Like a Pro ⚡ TL;DR You’re a burglar with commitment issues (no robbing two…
The O(n) Club: Subarray Sum Equals K – But Make It Fashion
The O(n) Club: Subarray Sum Equals K – But Make It Fashion ⚡ TL;DR Given an array and target k, count the number of CONTIGUOUS subarrays that…
The O(n) Club: Valid Parentheses — The Stack That Holds Your Code (and Life) Together
The O(n) Club: Valid Parentheses — The Stack That Holds Your Code (and Life) Together ⚡ TL;DR You’re asked: Given a string of brackets…
The O(n) Club: Product of Array Except Self (Or, How to Survive Without Division & Dignity)
The O(n) Club: Product of Array Except Self (Or, How to Survive Without Division & Dignity) ⚡ TL;DR You need a new array where each…
The O(n) Club: Find the Duplicate Number (or, That Time Your Array Became a Linked List)
The O(n) Club: Find the Duplicate Number (or, That Time Your Array Became a Linked List) ⚡ TL;DR Got an array with a single duplicate lurking…
The O(n) Club: Generate Parentheses — How to Host a Backtracking Party (No Unmatched Guests)
The O(n) Club: Generate Parentheses — How to Host a Backtracking Party (No Unmatched Guests) ⚡ TL;DR Want every way to juggle n pairs of…
The O(n) Club: Merge Intervals — Where Meetings Go to Collide
The O(n) Club: Merge Intervals — Where Meetings Go to Collide ⚡ TL;DR Have a bunch of intervals? Merge the overlaps, don’t ruin your calendar.…