Some trading cards have real value and can be sold for money. Bending the cards is frowned upon because it takes away their value and makes them look less new. Say you have a deck of trading cards (Pokemon, Magic, etc.) and you want to shuffle them. Instead of doing the bridge that bends all of t...

Introduction Everyone's heard of sine (sin), cosine (cos), tangent (tan), and secant (sec). Every angle has them. Far less known, or remembered, are the exsecant (exsec), cosecant (csc), excosecant (excsc), versine (versin), coversine (cvs), and cotangent (cot). Every angle has those as well. T...

You should write a program or function which receives a string representing an ASCII art as input and outputs or returns the number of endpoints in the input. The input will consist of the characters space - | + (with 0, 2, 2 and 4 endpoints respectively) and linebreaks. E.g.: -|++- + Two a...

The Algebra of Reflecting Points This is a challenge based on manipulating points with a specific set of operations, each dealing with the reflection of some points over others. Warning: There's not actually a challenge here yet, just the basis for a challenge that could be to "simplify the giv...

Blackbeard was an English pirate of the early 18th century. Although he was known for looting and taking ships, he commanded his vessels with the permission of their crews. There are no accounts of him ever harming or murdering his captives. This challenge is in honor of the infamous Blackbeard ...