The vigesimal or base 20 numeral system is based on twenty (in the same way in which the ordinary decimal numeral system is based on ten).
== Places ==
In a vigesimal place system, twenty individual numerals (or digit symbols) are used, ten more than in the usual decimal system. One modern method of finding the extra needed symbols is to write ten as the letter A20 (the 20 means base-20), to write nineteen as J20, and the numbers between with the corresponding letters of the alphabet. This is similar to the common computer-science practice of writing hexadecimal numerals over 9 with the letters...
Sexagesimal (base 60) is a numeral system with sixty as its base. It originated with the ancient Sumerians in the 3rd millennium BC, it was passed down to the ancient Babylonians, and it is still used—in a modified form—for measuring time, angles, and geographic coordinates.
The number 60, a superior highly composite number, has twelve factors, namely {1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60}, of which 2, 3, and 5 are prime numbers. With so many factors, many fractions involving sexagesimal numbers are simplified. For example, one hour can be divided evenly into sections of 30 minutes, 20 minutes...
113
Mandelbrot 3 x 133 chars
The first thing that popped into my mind was "Mandelbrot!".
Yes, I know there already is a mandelbrot submission. After confirming that I'm able to get it below 140 characters myself, I have taken the tricks and optimizations from that solution into mine (thanks Martin ...
Java, 126 81 bytes
Edit: I'm pretty sure that functions are allowed by default? If not, just tell me to rollback.
...yup.
It's actually longer than I expected - Java replaces items in strings with replaceAll() once per match, not repeatedly until it stops changing. So I had to use a fancy for ...
Generate the Sierpinski Graph
code-golf fractal graphs
This draft desperately needs a diagram or two, but that will have to wait for tomorrow or so.
Drawing the Sierpinski triangle has been done to death. There's other interesting things we can do with it though. If we quint hard enough at the...
A straw man is a common form of argument and is an informal fallacy based on giving the impression of refuting an opponent's argument, while actually refuting an argument which was not advanced by that opponent.
The so-called typical "attacking a straw man" argument creates the illusion of having completely refuted or defeated an opponent's proposition by covertly replacing it with a different proposition (i.e., "stand up a straw man") and then to refute or defeat that false argument ("knock down a straw man") instead of the original proposition.
This technique has been used throughout history...
Shorten (or not) text using run length encoding
Input:
heeeello
woooorld
Output:
1h4e2l1o
1w4o1r1l1d
Read lines from stdin.
Print to stdout.
Stderr is of course discarded.
Assume there are hidden testcases (no embedding of the output)
Input/Output as ASCII
Any language is accepted
