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The Programming Language Quiz was a Cops and Robbers challenge posted 2 years ago, where users were challenged to create obfuscated Hello, World! programs, and others tried to identify the language(s) in which those programs worked.
The post is currently closed to new cops submissions (although ...
Inside or Outside?
code-golfgeometrypolygondecision-problem
Given a point and a polygonial loop that is not self intersecting, determine whether the point is strictly inside or outside of the loop.
Details
The input is given as an ordered list of points in integral cartesian coordinates. You ...
I know it's possible to match a word and then reverse the matches using other tools (e.g. grep -v). However, I'd like to know if it's possible to match lines that don't contain a specific word (e.g. hede) using a regular expression.
Input:
hoho
hihi
haha
hede
Code:
grep "<Regex for 'doesn't...
Some of you may be familiar with the BigNum Bakeoff, which ended up quite interestingly. The goal can more or less be summarized as writing a C program who's output would be the largest, under some constraints and theoretical conditions e.g. a computer that could run the program.
In the same spi...
There's no such thing as a "half empty glass"
code-golf ascii-art
You probably know the rhetorical question of whether a glass is half full or half empty. I'm getting a little tired of the phrase, so I decided that it's time to eliminate this confusion about glass fullness or emptiness programm...
A standard ruler of length n has distance marks at positions 0, 1, ..., n (in whichever units). A sparse ruler has a subset of those marks. A ruler can measure the distance k if it has marks at positions p and q with p−q=k.
The challenge
Given a positive integer n, output the minimum number of ...
I'm trying to find all the neighbors of a given cell in a voronoi diagram. For example, given the following diagram, if I want to find the neighbors of the cell 1, then I should be able to return the points 2, 3 and 4.
I only have the image (pixels with position and colors), not the graph itse...
Old fashioned cell phones were and are used heavily as texting platforms, unfortunately the keyboard has only 12 + a few buttons, and is therefor ill-suited to naive text entry.
Common solutions make use of the traditional telephone coding (generally with a modest extension for 'q' and 'z'):
2:...
To normalize a vector is to scale it to a length of 1 (a unit vector), whilst keeping the direction consistent.
For example, if we wanted to normalize a vector with 3 components, u, we would first find its length:
|u| = sqrt(ux2 + uy2 + uz2)
...and then scale each component by this value t...