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Posts

Jul 13, 2025
IBM Ponder this 2025 06 solution
Apr 10, 2025
How smart are LLMs? The BrainF test
Dec 29, 2024
A Recursive Geometric Proof of 1962 IMO Problem 6
Dec 26, 2024
Traversing a Tree with Adjacecncy Sums - LeetCode H2872. Maximum Number of K-Divisible Components, H3203. Find Minimum Diameter After Merging Two Trees
May 8, 2024
The limit of an averaging sequence
May 6, 2024
IBM Ponder this 2024 04 solution
Apr 24, 2024
A nice identity of the sum of a certain fraction series
Apr 10, 2024
IBM Ponder this 2024 03 solution
Mar 13, 2024
IBM Ponder this 2024 02 solution
Feb 19, 2024
A Formula for Accumulated XOR Operations in a Continuous Range (LC E268)
Feb 11, 2024
IBM Ponder this 2024 01 solution
Jan 16, 2024
IBM Ponder this 2023 12 solution
Dec 19, 2023
Maximum Product Difference Between Two Pairs, but with a twist
Dec 19, 2023
IBM Ponder this 2023 11 solution
Nov 7, 2023
IBM Ponder this 2023 09 solution
Oct 29, 2023
Probability of line segments intersecting - A surprisingly simple result
Oct 18, 2023
The long journey from O(n^2) to O(n^1.5), Leetcode H1269. Number of Ways to Stay in the Same Place After Some Steps
Aug 2, 2023
Leetcode M808 Soup Servings Convergence Analysis
Jun 9, 2023
Leetcode M1318 Minimum Flips to Make a OR b Equal to c, E1351 Count Negative Numbers in a Sorted Matrix
Jun 5, 2023
Leetcode M1091 Shortest Path in Binary Matrix, M2101 Detonate the Maximum Bombs, E1232 Check If It Is a Straight Line
May 28, 2023
Tuscaridium cygneum and the maximum 8 vertex polyhedron -Follow up
May 26, 2023
Tuscaridium cygneum and the maximum 8 vertex polyhedron -A curious shape
May 26, 2023
Leetcode M1140 Stone Game II - Push it to the limit
May 23, 2023
Leetcode M934 Shortest Bridge Optimization
May 22, 2023
Leetcode M347 Top K Frequent Elements Optimization
May 21, 2023
Leetcode M399 Evaluate Division
May 14, 2023
Leetcode M2466 Count Ways To Build Good Strings Optimization
May 14, 2023
Leetcode E2215 Find the Difference of Two Arrays, M1456 Maximum Number of Vowels in a Substring of Given Length, E1572 Matrix Diagonal Sum Optimization
May 14, 2023
Leetcode E1822 Sign of the Product of an Array Optimization
May 14, 2023
An algorithm to iterate through all perfect matchings on a complete graph (Chord diagram)
Apr 27, 2023
Random Subarray Algorithm
Apr 23, 2023
New York Times Digits Solver
Mar 9, 2022
Finding flaws in an algorithm and constructing the counterexamples
Mar 7, 2022
Efficient Solution to Range Minimum Query (RMQ) and Lowest Common Ancestor (LCA) problems with O(1) query and O(n) preprocessing
Dec 9, 2021
The ultimate recaptcha
Sep 30, 2021
Introduction
Sep 5, 2021
Puzzle game