Linked Questions

Challenge Create a function or program that, when given an integer size, does the following: If size is equal to 1, output <...

An Abundant number is any number where the sum of its proper divisors is greater than the original number. For example, the proper divisors of 12 are: ...

While I was traveling in the future, I noticed a funny game among kids circa 2275. When they don't want their great-great-great-great-grand parents to understand what they're saying, they use the ...

Take a square matrix containing positive integers as input, and calculate the "rotated sum" of the matrix. Rotated sum: Take the sum of the original matrix and the same matrix rotated 90, 180 and ...

Intro A friend posed this question today in a slightly different way - "Can a single [Python] command determine the largest of some integers AND that they aren't equal?". While we didn't find a way ...

21, 21, 23, 20, 5, 25, 31, 24, ? Inspired by this Puzzle, given an integer \$n>0\$ , print out the following sequence until you reach a non-Integer (spoilered, in case you want to solve the puzzle ...

The sum of the squares of the first ten natural numbers is, \$1^2 + 2^2 + \dots + 10^2 = 385\$ The square of the sum of the first ten natural numbers is, \$(1 + 2 + ... + 10)^2 = 55^2 = 3025\$ ...

GolfScript gets its own way far too often and I feel that a repository of handy hints for golfing in J might help in the fight against the evil empire. What tips do you have for making this already ...

Given a string as an input (which can be any acceptable/convenient format in your language), implement pendulum encoding. The test cases are split into individual items (which aren't quoted) for a ...

Intro/Background I was looking at a Flybuys card at Coles recently and noticed that if I took something like this: Source, randomly found on the Internet And swapped some words around, I'd get ...

In a now deleted stackoverflow question, someone posted the following: Write a program or function to print alternating patterns in * and ...

Given N integers, output the sum of those integers. Input You may take the integers in any reasonable format, including: stdin arguments an array or list Rules ...

She said s(he) be(lie)ve(d), he said sbeve. Input A non-empty string, s. It's guaranteed that s will have only printable ASCII ...

Sometimes it really is a struggle to convert Cartesian coordinates (x,y) to Polar coordinates (r,phi). While you can calculate <...

Your task is to accept as input two gene sequences, and a sequence of "cross over points", and return the gene sequence that results from the indicated cross overs. What I mean by this is, say you ...