Is this a half-sort? code-golf string decision-problem
The problem over here introduces an new type of strings: if you split the string into equal halfs and swap the pairs, it produces the same output as sorting the string. We call that a half-sort.
Given a purely ASCII string, check if the str...
Find all Belphegor primes code-golf primes
A Belphegor number is a number of the form \$(10^{n+3}+666)*10^{n+1}+1\$ (1{n zeroes}666{n zeroes}1) where \$n\$ is an non-negative integer and a Belphegor prime is a Belphegor number that is also prime.
The \$n\$ values of the first few Belphegor prim...
![Positions on a chess board are identified by a letter and a number. The letter identifies
the column, while the number identifies the row]1
Make true and false global! code-golf kolmogorov-complexity decision-problem
We all know true and false, but what do speakers around the globe say?
+----------------------+------------+------------+
| Language | True | False |
+----------------------+------------+--------...0
The smallest positive integer that cannot be printed in fewer than %NUMBER% bytes of %LANGUAGE% i-dont-know-how-am-i-supposed-to-tag-this
Let's assume your language can output numbers - if it cannot, it probably won't be useful for this challenge. Your language must be Turing-complete (to preven...
0
I've been playing around with a robot on the coordinate plane. This robot is able to tell me if it goes left, right, up, or down by reporting back a string consisting of the letters L, R, U, and D, such as DLURRDLURDLLLRRLRLDURRU. Each character represents a movement of one unit. However, it seem...
This is a very simple challenge.
Task
Whenever your code is run, your code should output the next sunset time in GMT for all capital cities on Earth. You should get the list of capitals from here. The times should be outputted sorted by the name of the capital. You don’t need to output the ca...
