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Determine Superabundance
code-golf decision-problem number-theory
A superabundant number is an integer n that sets a new upper bound for its ratio with the divisor sum function σ1(n). In other words, for all integers 0<x<n
For a few of the values:
n σ(n) σ(n)/n superabundant
1 1 ...
We all know that whenever a rational number is written in decimal, the result is either terminating or (eventually) periodic. For example, when 41/42 is written in decimal, the result is
0.9 761904 761904 761904 761904 761904 761904 761904 ...
with an initial sequence of digits 0.9 followed by...
0
https://www.iarcs.org.in/inoi/online-study-material/topics/dp-tiling.php
The second question in the above link requires us to fill an 2xN grid with tiles of dimension 2x1 and an L shaped tile.
My doubt is that in the recursive formula for g(n):
g(n) = f(n-1) + h(n-1)
Why didn't we include the...
Stay away from zero
The current C solution is
f(n){n=n?:1;}
Obviously this command line is shorter:
-Df(n)=n?:1
But I've never seen anyone do that.
Is it allowed but not found, or not allowed because of what?
The partitions of an integer N are all the combinations of integers smaller than or equal to N and higher than 0 which sum up to N.
A relatively prime partition is an integer partition, but whose elements are coprime.
Task
Given an integer as input, your task is to output the count of relative...
Nope. You will have to do your own disproving.
The goal is to rewrite the following python code in one line:
def check_list_size(list1):
for lst in list1:
if len(lst) != 1:
return False
return True
A function should not be needed to accomplish this.
Challenge:
Your task is to use any language to output that language's name times the number of character's in its name.
Use the common name or acronym of the language.
If there are
multiple versions of a language, you need not include the version number.
The capitalization matters.
Exampl...
Doxing (from dox, abbreviation of documents), doxxing or docxing, is the Internet-based practice of researching and broadcasting private or identifiable information (especially personally identifiable information) about an individual or organization.
The methods employed to acquire this information include searching publicly available databases and social media websites (like Facebook), hacking, and social engineering. It is closely related to internet vigilantism and hacktivism.
Doxing may be carried out for various reasons, including to aid law enforcement, business analysis, extortion, coercion...
Polynomial Interpolation
Tags: code-golf, math, polynomials
Explanation
In this task you'll be given a set of N points (x1,y1),…,(xN,yN) with distinct xi values and your task is to interpolate a polynomial through these points. If you know what Lagrange interpolation is you can skip this sec...
To the name of your programming language and version number:
Convert the name into numbers based on their position in the alphabet, where A = 1 and Z = 26
Do the opposite for the version number. You may ignore the dot or any other symbols in the version number if you wish.
No separators are re...
Anonymous
Demolish a string! v2
stringcode-golf
A modified version of Demolish a String; since the original question involved randomness, the challenge was too complex and there were not many answers. This challenge removes the criterion and allows flexibility by the answerer, which should invite respons...00:00 - 20:0020:00 - 00:00
