# Posts by Razetime

Given a list of strings(and optionally, their length) as input, weave the strings together. Intro Your goal is to mimic the WV operator in Pip. Take a list of strings and alternate between their ...

Challenge idea taken from: Eliseo D'Annunzio Task Provide code that evaluates to 0.5 numerically, i.e. the output must be recognized by your chosen language as a numeric value (Number, float, dou...

Challenge Given a list of integers >= 0 , check if all of them are equal. Tests [1,1,1,1,1] -> true [0,1,1,6,7] -> false [1] -> true [] -> undefined(you do n...

Heavily based on this closed challenge from SE. Description A Sumac sequence starts with two non-zero integers $t_1$ and $t_2.$ The next term, $t_3 = t_1 - t_2$ More generally, $t_n = t_{n-2} ...

Currently, the posting guidelines for Code Golf are the defaults on Codidact. The pre existing guidelines on SE are the following: The main points of discussion are: What would we like to ...

APL (Dyalog Unicode), 11 3 1 byte ⊥ Try it online! Anyone who can golf this further gets a cookie! Function submission which takes reversed coefficients as right argument and $x$ as left ar...

Description From the Esolangs wiki, In Fractran, a program consists of a finite list of positive, rational numbers. The input to a program is a positive integer n. The list is then searched ...

Challenge A Niven number is a positive integer which is divisible by the sum of its digits. For example, 81 -> 8+1=9 -> 81%9=0. Your task is to find the first n Niven numbers, given n. Te...

Jelly has an atom called untruth, which when given indices, creates an array with 1s at those places: [2,4] → [0,1,0,1]. You are required to perform the inverse of this. Given a 2D boolean array, ...

Challenge Given a string, e.g. Hello, do the following: Mirror it: Hello -> HelloolleH and create a right triangle using it as the sides: H ee l l l l o...

A rewrite of this SE question with a simpler input format and guidelines. Challenge Deadfish uses a single accumulator, on which all commands are to be performed. It has the following commands: ...

Yes tips is a sort of prefix tag, and code-golf-tips is a superfluous tag. I think it it worth keeping them separate because tips is already very flexible.

APL(Dyalog Unicode), 26 bytes SBCS {⊃x/⍨⊃¨⍺∘⍷¨x←,∘⍵¨(⊂⍬),,\⍺} Try it on APLgolf! A dfn submission which takes the inputs as left and right argument. I took way too long to come up with this. ...

What are our rules for function submission? What constitutes a function, and what makes a submission valid? Language agnostic answers are allowed.

This challenge is based on the i. verb from J. A range grid is basically a range of m × n numbers fit into a rectangular grid with m rows and n columns. A 2×3 range grid would be: 0 1 2 3 4 5 ...

Challenge You will be given a string and an ascii art as input. The string must be placed above the ascii art, and centered based on its longest line. The text BOTTOM TEXT must be placed below...

Husk, 10 bytes kSo±-ȯΣhḊḣ Try it online! keyon is very nice here, but it's still a bit too long, sadly.

Task Print the following: ABDFHJLNPRTVXZ CABDFHJLNPRTVX ECABDFHJLNPRTV GECABDFHJLNPRT IGECABDFHJLNPR KIGECABDFHJLNP MKIGECABDFHJLN OMKIGECABDFHJL QOMKIGECABDFHJ SQOMKIGECABDFH USQOMKIGE...

Husk, 11 10 bytes U¡λ⌊^+.%2¹ Try it online! This can probably be trivially ported to Jelly. Explanation U¡o⌊Ṡ^o+.%2 ¡ iterate over the input infinitely, creating a list o ...

JavaScript (V8), 32 bytes f=n=>[...Array(n).keys()].map(f) Try it online! Somehow it doesn't recurse forever at n=0. Pretty nice.

Stax, 12 bytes ä╫◙=♥:≡ƒélΣæ Run and debug it +3 after correcting it(thanks, HakerH) Explanation b%s%>{s}M|-%1= b copy the two inputs %s%> is the first's length...

Husk, 9 solutions 1. Classic 256 Try it online! 2. Squaring □□4 Try it online! 3. Incrementing →→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→...

Task Given an IP address as a string, find its IP address class. For reference, here is a table: Class Leadingbits Numberof networks Addressesper network Total addressesin class Start...

Introduction The Pell(no, not Bell) Numbers are a simple, Fibonacci-like sequence, defined by the following relation: $P_n=\begin{cases}0&\mbox{if }n=0;\\1&\mbox{if }n=1;\\2P_{n-1}+P_{n-2...