Cops and Robbers: Create/Escape Jail
cops-and-robbers
(Other name suggestions are welcome, probably relating to great escape movies or w/e, like The Italian Job, or Mission Impossible.)
Based on this answer and comment from the Make Your Language Unusable challenge.
Cops:
(possible hastily-m...
Update: January 15, 2016
Thank you for your candidness, patience and feedback. We're going to delay the implementation for now - we'll be back soon to open some more discussions.
Important context for those arriving from reddit and slashdot links:
The status quo is not "public domain"; a...
I'm still working on this, I'm sandboxing this to get my ideas down but I still need to add all the test cases and all.
What's the Language?
code-challenge test-battery
Recently, the PPCG design leaderboard has been having some trouble parsing answer headers.
In this challenge you'll be ta...
I'm trying to solve this equation:
$$2-x=-\sqrt{x}$$
Multiply by (-1):
$$\sqrt{x}=x-2$$
power of 2:
$$x=\left(x-2\right)^2$$
then:
$$x^2-5x+4=0$$
and that means:
$$x=1, x=4$$
But $1$ is not a correect solution to the original equation.
Why have I got it?
I've never got a wrong solution to an e...
Given two words, spoonerise them by switching their initial consonant clusters. Fewest bytes wins.
plaster man -> master plan
blushing crow -> crushing blow
litigating more -> mitigating lore
strong wrangler -> wrong strangler
def ghi -> ghef di
few years -> yew fears
The consonants appearing ...
Today your goal is to find integers a and b given non-negative integer n such that:
You should write a program or a function that takes parameter n and outputs a and b in a format of your choice.
Standard loopholes apply. Additionally, it's intended that you implement the above problem using ...
This is Markov.
Markov's golf ball rolls around randomly.
Markov's ball will hole however he strikes it.
Markov is smart.
Be like Markov.
And this:
is an anthill in Langton's backyard.
The anthill is big enough to hold Markov's golfball, MarGolf. However, the anthill moves and changes directio...
If you compile with debug symbols, you can use objdump to produce a more readable disassembly.
>objdump --help
[...]
-S, --source Intermix source code with disassembly
-l, --line-numbers Include line numbers and filenames in output
Example:
> gcc -g -c test.c
> objdump -d ...
This challenge is inspired by this (and ignores this), but hopefully extends the scope slightly:
We call a "basic arithmetic operator" any function/operator/command of your chosen language that is able to
take two integers (call them aand b) as input (or read two integers from stack or STDIN o...
Introduction
Arrays can also be seen as a field for a bouncing ball. This of course sounds very vague, so here is an example:
[1, 2, 3, 4, 5, 6, 7, 8, 9]
[9, 8, 7, 6, 5, 4, 3, 2, 1]
[1, 2, 3, 4, 5, 6, 7, 8, 9]
Would result in:
[1, 8, 3, 6, 5, 4, 7, 2, 9]
[9, 2, 7, 4, 5, 6, 3, 8, 9]
[1, 8, 3,...
(FB, or Functional-Basic, as found here Interpret Functional-Basic)
Task
Implement a linting program for FB, similar to JSLint for JavaScript.
Error types
Invalid identifier
Identifiers can only have upper and lower case ASCII letters.
Locations:
The identifier right after a let expressi...
Emotinomicon, 48 bytes / 13 characters
I do it, not because it is short, but because it is fun. Try it here. You'll have to copy+paste it into the textbox.
😼⏪🆙😦✖😎😿➕😨😼🆙😄⏩
Explanation:
😼 ⏪ 🆙 😦 ✖ 😎 😿 ➕ 😼 🆙 😄 ⏩ explanation
😼 ...
Color Inversion
In this challenge, we will be inverting the colors in a .BMP file.
We define "Color Inversion" (really the negative) in the following manner:
If you have color given by RGB values (a,b,c) then the inverse of this color is (255-a, 255-b, 255-c).
Given a .BMP file as input (eit...
