We're back! And this time with an objective scoring criteria! This is a challenge I thought of recently which I think is not hard but allows for a wide range of possible solutions. Seems like a perfect fit for the creativity of PPCG users :) Your Task Define two functions combine and separate wi...

Unique languages As we found out before, each of the 680 languages on Try it online! has a "TIO uniqueness", defined as the length of the shortest substring that appeared in the language's name and no others'. This time, we're going to make it more general. Given a list of strings S and a target ...

Truncate continued fractions code-golf math rational-numbers Background A continued fraction is a way to represent a real number as a sequence of integers in the following sense: $$ x = a_0 + \frac{1}{a_1 + \frac{1}{a_2 + \frac{1}{\ddots + \frac{1}{a_n}}}} = [a_0; a_1,a_2,\cdots,a_n] $$ Finite co...

Imagine four people stand in a line. The first looks at a thermometer, and tells the temperature to the person on their right. This continues down the line, until the last person writes the temperature on a sheet of paper. Unfortunately, due to a miscommunication, every person in the line convert...

Sum of two squares code-golf math number-theory decision-problem Given an integer \$n\$, determine whether \$n\$ can be expressed as the sum of two square numbers, that is \$\exists a,b\in\mathbb Z|n=a^2+b^2\$. 0 -> truthy 1 -> truthy 2 -> truthy 3 -> falsy 4 -> truthy 5 -> trut...

from Wikipedia, a number is called B-powersmooth if all prime powers \$p^v\$ that divide the number satisfy \$p^v \leq B\$. B-powersmoothness is important, for example, for Pollard's p-1 factorization algorithm. Task your task is to get two numbers, \$n\$ and \$B\$, and output if \$n\$ is \$B\$-p...

Fibonacci coding is a universal code, which can encode positive integers of any size in an unambiguous stream of bits. To encode an integer \$ n \$: Find the largest Fibonacci number less than or equal to \$ n \$; subtract this number from \$ n \$, keeping track of the remainder If the number su...

The goal of this assignment is to write a program that uses the jService to print a question and the corresponding answer. To get a random question, simply send an HTTP request to ' http://jservice.io/api/random'. The response will be in JSON format: This is an example of response from jService: [{"