For the rational functions defined on the complex numbers, see Möbius transformation.
The classical Möbius function μ(n) is an important multiplicative function in number theory and combinatorics. The German mathematician August Ferdinand Möbius introduced it in 1832. It is a special case of a more general object in combinatorics.
== Definition ==
For any positive integer n, define μ(n) as the sum of the primitive n-th roots of unity. It has values in {−1, 0, 1} depending on the factorization of n into prime factors:
μ(n) = 1 if n is a square-free positive integer with an even number of p...
For this golf, you will need to use more than one language.
The task
A Rube Goldberg machine is a contraption that takes an enormous number of complicated steps in order to execute a very simple task. The goal of this golf is to output Rube Goldberg... but not directly.
The machine
Your "mach...
If you have seen the language "Chicken", You will be impressed.
If you didn't, Do It. You will be impressed.
Anyway, This Code golf is about it.(Yes, the "Chicken" thingy)
You have to write an interpreter for that!
What you have to do is simple.
Get a file name from user input.
Read the fil...
Python -> Batch -> Javascript -> Java -> PHP -> C++ -> Foo -> Brainfuck 31 points
Python
print'@echo alert`void f(){System.out.println("echo\"void f(){cout<<\\"\\\\"-[--->+<]>---.----[-->+++<]>.+[->+++<]>.+++.--[--->+<]>-.+++[->++<]>+.[--->+<]>++.---.--------.--.+++.+++++++++++++.-----------.\\...
Python → Ruby → Bash, score: 35 / 2 = 17.5
print"puts'echo \"Rube Goldberg\"'"
when executed in Python, gives
puts'echo "Rube Goldberg"'
with the \"s escaped. Next, this, executed Ruby gives
echo "Rube Goldberg"
and lastly, executing this in Bash gives
Rube Goldberg
which is the expec...
Render Simplified Markdown code-golf
Your boss is bored so he wants you to golf him a text-to-html markdown editor. Fortunately, he only uses a few of markdown's syntax.
Simplified Markdown Specification
Lines that start with # should be enclosed in <h1> and </h1>
Lines that start with ## ...
