Questions tagged [code-golf]
Code-golf is a competition to solve a particular problem in the fewest bytes of source code.
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Count the symmetries
Find the order (size) of the symmetry group of a finite set of integer points in d-dimensional space.
Input
You will be given the coordinates of a finite set of points in d-dimensional space, in any ...
- 1,334
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9
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Enter a personal identification number
In this challenge your code should allow the user to enter a four digit PIN.
Rules
If the user types a digit, your code should output a * symbol. If the user presses backspace it should delete the ...
- 3,255
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Fractions nobody needs (because they can be reduced to a simpler form)
It happened in the 19th century. Georg was bored and started counting the rational numbers. Surprisingly, he discovered that there were no more of them than natural numbers. This insight made Georg ...
- 511
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Play the Final Fantasy Prelude
Play the initial section of the Final Fantasy Prelude. This is a 4-octave up-down arpeggio of the following chords:
Cadd2, Amadd2, Cadd2, Amadd2, Fadd2, Gadd2, G♯maj7, A♯maj7
Rules:
Actual sound must ...
- 1,201
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Implement a Monad
A monad is a type that wraps another type, that represents the available operations on the wrapped type. Monads have the following associated operations, where M is ...
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Count squares in my pi approximation
One way to approximate π is the following: Start by drawing a 2x2 square with a quarter-circle in it. Then, the area of the quarter-circle is π.
We can approximate this area by filling it with ...
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Smallest prime q such that concatenation (p+q)"q is a prime
Let p, q, and c := (p + q)"q (where " denotes concatenation) be positive integers such that p and c are primes and q is the smallest prime such that c is prime.
Such a prime triple (p, q, (p ...
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Branchless median of 5
Write code to compute the median of 5 positive 32 bit integers. Your code must be branchless.
A branch, jump or transfer is an instruction in a computer program
that can cause a computer to begin ...
- 3,255
14
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15
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Convert base-10 to base-0.1
Base-0.1 mean e.g. 123.45 means in decimal \$1\times 0.1^2+2\times 0.1^1+3\times 0.1^0+4\times 0.1^{-1}+5\times 0.1^{-2}\$.
Input and output should match RegEx <...
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ASCII 2D landscape
You are given an input string, called path, consisting of u, d and s characters (i.e. ...
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Function with memories of its past life
Task
I need a function that accept string and return a function f1.
That f1 function should also accept string and return a <...
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Sylvester primes
Sylvester's sequence can be defined recursively S(n) = S(n-1)*(S(n-1) + 1) for n >= 1 starting S(0) = 1.
Since S(n) and S(n) + 1 have no common divisors, it follows that S(n) has at least one more ...
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Is it a date format of YYMMDD, MMDDYY, and/or DDMMYY?
The date format varies between countries; the arrangement of date, month and year can be categorized into these three:
Year-month-date
Month-date-year
Date-month-year
In Gregorian calendar it's year ...
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How many ways can you make change?
The "third type of Euler Transform" takes an integer sequence that gives the number of objects of a given weight and outputs a sequences that gives the number of multisets of objects that ...
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