Phony fractions code-golf decision-problem maths Context If a0 and b0 are two decimal numbers, with a and b representing the decimal expansion up to the 10s place, then we know that $$\frac{a0}{b0} = \frac{a\not0}{b\not0}= \frac{a}{b}$$ Phony fraction A phony fraction is a fraction where the...

ASCII art is ready for take-off code-golf ascii-art Even though I could find some related challenges here and here, I think this is still acceptable: Task Given a positive integer n, draw the corresponding rocket. Examples From n = 1 to 4. The trailing newline after a rocket is optional. ...

Background Famously, the acronym GNU stands for GNU's Not Unix. 1 It's recursive because, after expanding it once, it still contains the acronym GNU, and so must be exanded again: (GNU's Not Unix)'s Not Unix And so on, ad infinitum. Visualizing this, we get a kind of Droste effect: ┌─────...

Context If a0 and b0 are two decimal numbers, with a and b representing the decimal expansion of all but the least significant digit, then we know that $$\frac{a0}{b0} = \frac{a\not0}{b\not0}= \frac{a}{b}$$ Phony fraction A phony fraction is a fraction where the numerator and denominator shar...

String-wise calculus (i) code-golfstringcalculus This might turn into a series involving other aspects of calculus, including using the "derivative" of a string to find "stationary points" etc, as well as "integration" of sentences Introduction If y'all have ever studied calculus, you'll most ...

Simulate a random walk code-golf random maths Context In this challenge, a random walk is a stochastic process in which a particle at a position with integer coordinates (or a drunk man) moves at each integer time step (say at t = 1, 2, 3, ...) by taking a step of size 1 to any of its neighbour...

Context From Wikipedia: A polyomino is a plane geometric figure formed by joining one or more equal squares edge to edge. one-sided polyominoes are distinct when none is a translation or rotation of another (pieces that cannot be flipped over). Translating or rotating a one-sided polyomino does ...

Straw Science (a.k.a. imprecise average) One of my 100 tippy-pointed straws usually look like this (as a matter of fact, it also looks like a lipstick, but let's ignore that for a moment): /| / | / | | | | | Now here's the crazy thing - we are going to use it to calculate the average o...