The O(n) Club: Anagrams Don’t Sort Themselves (But You Can Make Them Try)
The O(n) Club: Anagrams Don’t Sort Themselves (But You Can Make Them Try) ⚡ TL;DR Grab all the strings that are anagrams, put them in…
The O(n) Club: Kth Largest Java Throwdown (Why Sorting Alone Won’t Save You)
The O(n) Club: Kth Largest Java Throwdown (Why Sorting Alone Won’t Save You) ⚡ TL;DR If you’re after the Kth largest element in a…
The O(n) Club: Longest Consecutive Sequence: Arrays, Coffee, and Why HashSets Are Your Real Friends
The O(n) Club: Longest Consecutive Sequence — Arrays, Coffee, and Why HashSets Are Your Real Friends ⚡ TL;DR Unsorted array, need the longest…
The O(n) Club: Subsets (Power Set): Why Your Algorithmic FOMO Is Actually Required
The O(n) Club: Subsets (Power Set): Why Your Algorithmic FOMO Is Actually Required ⚡ TL;DR You need every possible subset of a set of unique…
The O(n) Club: Word Search – When DFS Meets a Letter Maze
The O(n) Club: Word Search – When DFS Meets a Letter Maze ⚡ TL;DR Take a grid of letters, try to trace your chosen word by hopping between…
The O(n) Club: Binary Tree Maximum Path Sum, Now With Extra Chaos
The O(n) Club: Binary Tree Maximum Path Sum, Now With Extra Chaos ⚡ TL;DR Hunt for the highest-sum path in your binary tree. This path can…
The O(n) Club: Course Schedule (LeetCode 207): How Not to Major in Infinite Loops
The O(n) Club: Course Schedule (LeetCode 207): How Not to Major in Infinite Loops ⚡ TL;DR This is a “can you finish all your…
The O(n) Club: First Missing Positive—That Sneaky Little Integer You Forgot
The O(n) Club: First Missing Positive—That Sneaky Little Integer You Forgot ⚡ TL;DR Your dev lead wants the smallest missing positive integer…
The O(n) Club: Largest Rectangle in Histogram: Unleash the Monotonic Stack Mayhem
The O(n) Club: Largest Rectangle in Histogram – Unleash the Monotonic Stack Mayhem ⚡ TL;DR Want to find the biggest rectangle under a…
The O(n) Club: Single Number — How XOR Outsmarts Everyone at the Coding Party
The O(n) Club: Single Number — How XOR Outsmarts Everyone at the Coding Party ⚡ TL;DR The infamous Single Number problem: there’s one oddball…