Unanswered Questions

81 questions with no upvoted or accepted answers
22
votes
0answers
1k views

Complement a POSIX Extended Regular Expression

Given a POSIX Extended Regular Expression as input, output its complement (also a POSIX ERE). If the given regular expression matches a string, its complement should not match it, and the regex: ...
17
votes
0answers
502 views

Totally Cubular

Create a program or function to unjumble a 9x9x9 cube of digits by rotating individual 3x3 cubes within it. This is similar to (but, I suspect, a bit harder than) my Flippin' Squares question. Input ...
16
votes
0answers
321 views

Acyclic orientations of an n-dimensional cube

The goal of this challenge is to check and extend the OEIS sequence A334248: Number of distinct acyclic orientations of the edges of an n-dimensional cube. Take an n-dimensional cube (if n=1, this is ...
15
votes
0answers
501 views

Hexasweep (part 1): The Solver

(This is part 1 in a two-part challenge.) Your task is to solve a Hexasweep puzzle. A Hexasweep puzzle is set out on a grid of diamonds arranged in hexagonal shapes, of which the board looks like a ...
15
votes
0answers
459 views

How to golf string output in Chef

I'm attempting to solve a programming golf style programming puzzle. I need to write an 18 character phrase in Chef in less than 32 "lines" of code. In this case, a line counts as an ingredient or an ...
14
votes
0answers
642 views

How should I tile my kitchen?

I recently ordered some new and colorful tiles to replace my boring old white tiling for my kitchen. However, when the tiles arrived, they were all in a weird shape! Therefore, I need a program to ...
13
votes
0answers
174 views

Paper Folding for the win

Paper Folding for the win "How many times can you fold a paper?" - This well known question led to many arguments, competition, myths and theories. Well, the answer to that question depends ...
13
votes
0answers
407 views

Write a program that checks the consistency of modern mathematics

Modern mathematics has been formalised using set theory by various systems of axioms. Zermelo Frankel set theory with the axiom of choice (ZFC) forms an intuitive set of axioms and is hence most ...
13
votes
0answers
196 views

Fix Brain-Flak push-pop redundancy

Brain-Flak is a stack-based esoteric language with eight commands: ...
12
votes
0answers
206 views

Compare Dowker Knotation

Dowker notation is a common way of representing mathematical knots. Dowker notation can be derived from a knot diagram in the following way (based on the description from the wikipedium): We will ...
12
votes
0answers
506 views

Please parse this aLL1en language

Background Due to some unfortunate accident during coding you are now teleported and stranded on an alien planet. You really hope that the locals will be helpful and point to the general direction of ...
11
votes
0answers
160 views

Score a 1 player game of Carcassonne

Carcassonne is a tile-based game, where the objective is to construct Roads, Cities and Monasteries, in order to score points. The game works by players taking turns to draw and place tiles to ...
11
votes
0answers
798 views

Find a Glider Synthesis (Game of Life)

Challenge Summary In summary, the challenge is to provide the glider synthesis for a Game of Life configuration, which is your input. What does this mean? Well, firstly, let me explain a few terms. ...
11
votes
0answers
433 views

Simulate a Game of Quagmire

Background Many moons ago, in a galaxy much like our own, a young BrainSteel attempted to invent a board game. He believed that he, too, could find an amazingly simple set of rules that would generate ...
11
votes
0answers
735 views

Delivery Robots and Destroyer Drones

Program your robots to deliver packages in a warehouse infested with destroyer drones. Avoid the drones and get your packages to the right place as fast as you can. Delivery Robots There are ...

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