Add and multiply perplexing numbers The split-complex numbers, also known as "perplex numbers" are similar to the complex numbers. Instead of i^2 = -1, however, we have j^2 = 1; j != 1. Each number takes the form of z = x + j*y. Here are some examples for your viewing pleasure: 6 * 9 = 54 ...

Four-Byte Bloom Filter Bloom filters are cool. In the words of that Wikipedia article: A Bloom filter is a space-efficient probabilistic data structure, conceived by Burton Howard Bloom in 1970, that is used to test whether an element is a member of a set. False positive matches are possibl...

Smallest Turing Complete Interpreter Sandbox Notes Has anything like this ever been done before? Do you think this will be well received? In my research I couldn't find a simple definition of what makes a language "Turing complete". What alterations or additions should I make to the language r...

Every programmer knows that rectangles □ are really fun. To exacerbate this fun, these cute and fuzzy diagrams can be transformed into groups of interwoven brackets. This challenge is the inverse of my previous. Let's say you have a group of interlocking rectangles like so: +------------+ ...

Hi everyone I was surfing this great website looking with amazement at your question and answers and found that I'm an intermediate with python cannot almost answer one (and when I find an easy one.. I find that it is aleardy answered :D ) and I want to share this program which I wrote in python ...

Alignment on Triangular Grids code-golfhexagonal-grid Hexagonal grids have been become a fairly popular twist for challenges about 2-dimensional data recently. However, it seems that the equally interesting triangular grids have been largely neglected so far. I'd like to rectify that with a rat...

Actually not inspired neither by Atbash Self Palindromes nor by Generalized Gematria Calculator. Given a string s of length n, output the Revu'a sequence, which is the first character of s, the first two characters of s, ... the first n–2 characters of s, the first n–1 characters of s, the entir...

Majority Voting with Cellular Automata code-challenge There's a really important problem in cellular automata called the Majority problem: The majority problem, or density classification task is the problem of finding one-dimensional cellular automaton rules that accurately perform majori...

Inject Textual Rickrolls Because rickrolling is the greatest meme on Earth, you [know the rules and so do I] are to write the shortest code that can textually rickroll the unsuspecting reader. Let [you down] there be an input text which contains letters, punctuation, and spaces. Anytime a [lie...