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Port wine (also known as Vinho do Porto, Portuguese pronunciation: [ˌviɲuduˈpoɾtu], Porto, and usually simply port) is a Portuguese fortified wine produced exclusively in the Douro Valley in the northern provinces of Portugal. It is typically a sweet, red wine, often served as a dessert wine, though it also comes in dry, semi-dry, and white varieties. Fortified wines in the style of port are also produced outside Portugal, most notably in Australia, France, South Africa, Canada, India, Argentina, and the United States. Under European Union Protected Designation of Origin guidelines, only the product...
Exit Code Golf
code-challenge
suggested tags?
Inspired by this default for IO.
The Task
Write a program that, given an input integer x between 0 and 255, crashes with exit code x.
Restrictions
You may not call anything which is documented as an exit call (System.exit(x) or the like). In...
Graphical Borromean Rings
Here is an SVG rendering of the Borromean Rings:
<svg xmlns="http://www.w3.org/2000/svg" height="200" width="200">
<defs>
<radialGradient id="green">
<stop stop-color="transparent" offset="70%"/>
<stop stop-color="#0F0" offset="75%"/>
<...
Here’s how to backspace-and-retype from one string to another:
Start from the first string.
Remove characters at the end until the result is a prefix of the second string.
Add characters at the end until the result equals the second string.
For example, the path from fooabc to fooxyz looks li...
Recreate '99 bottles of beers on the wall'.
The desired output is this:
99 bottles of beer on the wall, 99 bottles of beer.
Take one down and pass it around, 98 bottles of beer on the wall.
98 bottles of beer on the wall, 98 bottles of beer.
Take one down and pass it around, 97 bottles of b...
"Ich bin ein Berliner" (German pronunciation: [ˈʔɪç ˈbɪn ʔaɪn bɛɐˈliːnɐ], "I am a Berliner") is a quotation from a June 26, 1963, speech by U.S. President John F. Kennedy in West Berlin. Kennedy aimed to underline the support of the United States for West Germany 22 months after Soviet-supported East Germany erected the Berlin Wall to prevent mass emigration to the West. The message was aimed as much at the Soviets as it was at Berliners and was a clear statement of U.S. policy in the wake of the construction of the Berlin Wall. Another phrase in the speech was also spoken in German, "Lasst sie...
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A macaron (/ˌmɑːkəˈrɒn/ mah-kə-ROHN; French pronunciation: [makaʁɔ̃]) is a sweet meringue-based confection made with egg white, icing sugar, granulated sugar, almond powder or ground almond, and food colouring. The macaron is commonly filled with ganache, buttercream or jam filling sandwiched between two cookies. The name is derived from the Italian word macarone, maccarone or maccherone, the meringue.
The confection is characterized by a smooth squared top, a ruffled circumference (referred to as the "foot" or "pied"), and a flat base. It is mildly moist and easily melts in the mouth. Macarons...
Is the Twitter account @realDonaldTrump a parody account, or is it actually controlled by Donald Trump?
I think it's easiest to explain this challenge in a sequential manner. Start with an input number N and:
Find its highest prime factor
Check numbers above and below N and see if the highest prime factor is higher (i.e. the highest prime factor of N-1 and/or N+1 is higher than the factor of N.
C...
This question is about abelian sandpiles. Read this previous challenge and watch this numberphile video to learn more.
An abelian sandpile of size n by n is a grid containing the number 0, 1, 2 and 3 (representing the number of grains of sand). Adding two sandpiles works by first adding elemen...
In music theory, minor scale may refer to:
a heptatonic scale whose first, third, and fifth scale degrees form a minor triad, that is, a seven-note scale in which the third note is a minor third (three semitones) above the first, and the fifth note is a perfect fifth (seven semitones) above the first. This includes (among others) the natural minor, harmonic minor, and melodic minor scales. A minor scale differs from a major scale in that the third degree in a major scale is a major third (four semitones) above the first degree. In other words, the third degree in a major scale is one semitone higher...
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