Here is another simple one:
The Challenge
Given two points in a n-dimensional space, output the distance between them.
The coordinates will be rational numbers, only limits are the restrictions of your language.
Lowest dimension is 1, highest is whatever your language can handle
You may assum...
Imagine that two people who have the ability to read anyone's mind confront each other. Each one of them knows that the other is able to read minds and so they try to read each other's mind.
Let's call the two subjects Subject A and Subject B:
Subject A starts reading Subject B's mind, but si...
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Hypercubes elements
Write a function or program that outputs the number of each type of element (vertex, edge, face, etc.) of an N-dimensional hypercube.
As an example, the 3 dimensional cube has 1 cell (i.e. 1 3-dimensional cube), 6 faces (i.e. 6 2-dimensional cubes), 12 edges (i.e. 12 2-dimen...
Remember 2010, when smartphones looked like this?
Back then, we created a mobile version of chat, so that people could use the bare minimum of features on those and similar phones.
Well waddayaknow, suddenly it's 2016, smartphones for some reason now look like this:
–...12
The Problem
I have a bunch of regular expressions that I need to use in some code, but I'm using a programming language that doesn't support regex! Luckily, I know that the test string will have a maximum length and will be composed of printable ASCII only.
The Challenge
You must input a regex...
The Challenge
Given a valid regex, output a regex that that matches the same set of strings, but reversed.
The Task
This challenge uses the most basic regex operations: ^, $, ?, +, *, [], {}, |. There's no such thing as capture groups or any of that complicated stuff. Special characters can ...
Stop motion rain
unknown*
An interesting, though not commonly used feature of consoles is that you can push all the text off the screen, allowing you to start with a clean slate. If you do this fast enough you can make some animation.
Task
Write a animation script that draws falling rain.
Ra...
