Primality testing expression code-golf restriced-source decision-problem
Your goal is to determine whether a given number n is prime in the fewest bytes. But, your code must be a single Python 2 expression consisting of only
operators
the input variable n
integer constants
parentheses
No lo...
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3. JavaScript → Python → Foo
JavaScript
Classic JS quine. This is a full program which outputs to console:
(f=_=>console.log(`print(${String.fromCharCode(39)}${String.fromCharCode(34)}(f=${f})()${String.fromCharCode(34)}${String.fromCharCode(39)})`))()
Try it online!
Python
Python code bas...
This is a simple challenge where a number taken from STDIN is converted to its word form, and given out in STDOUT. (By word form I mean how the number is said out loud).
Eg:
1---->One
2---->Two
69---->Sixty Nine
429---->Four hundred and twenty
101---->One hundred and one
Your task is to write ...
It's been a while since I posted here, so here we go another day another challenge.
Challenge :
Given a number(n) split it into it's prime factors.
Input :
A positive non-zero integer greater than 2.
Output :
Decompose the number into it's prime factors and return the number of occuran...
Numbers Addition
Challenge
Given a list of numbers K and a desired result N your task is to output the expression which can be used to get N using only plus operator + and minus operator -
Example:
[3,7,9,3,-5,7,0,-5], 11 => 3 + 7 + 9 - 3 - -5 - 5 + 0 + -5
Rules
Only one operator can be us...
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Fill up to duplicate ranges
Let \$L\$ be a list of positive integers with no particular ordering, and which can contain duplicates. Write a program or function which outputs a list of positive integers \$M\$ (whose ordering is unimportant) such that the union of \$L\$ and \$M\$ results in a list...
Mingle and Select
The programming language INTERCAL has two operators, "mingle" or "interleave" (represented by $), and "select" (represented by ~).
Mingle takes two 16-bit values and produces a 32-bit value by taking single bits alternately from its left and right operands, and concatenating t...
Background
This challenge is inspired by this website, which published the following diagram:
This diagram shows us that the longest Roman Numeral expression under 250 is that of 188, which requires 9 numerals to express.
Challenge
The standard symbols used to express most Roman Numerals ar...
Count Like a Babylonian
code-golf number
Challenge
Given an ASCII representation of a Babylonian number as input, output the number in Western Arabic numerals.
Babylonian Numeral System
How did the Babylonians count? Interestingly, they used a Base 60 system with an element of a Base 10 syst...
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