Inspired by this Mathematica.SE post
Given two positive integers \$n, k\$ with \$n > k \ge 1\$, output a binary \$n\times n\$ matrix such that every row and column contains exactly \$k\$ 1s, and the leading diagonal is all zero. This is the adjacency matrix of a regular graph.
You may output any ...
Play the Fruit Box Game
Intro
Fruit Box is a game consisting of a 10x17 grid of numbers, each between 1 and 9, where the goal is to clear as many numbers as possible in a two-minute time window. In order to clear numbers, one selects a rectangle aligned with the grid, and if the numbers inside of...
Number of arrangements of half a Rubik's cube
From a corner-on view of a Rubik's cube calculate the number of arrangements of tiles that are out of view.
Your input will provide the state of a Rubik's cube when viewed like the below image:
This input will be an array, in any defined order†, grou...
Mirror an integer... in NDos' way
NDos' Numeral System
NDos' numeral system is a numeral system invented by me. It represents every nonnegative integer by a binary tree. Given a nonnegative integer \$n\$:
If \$n=0\$, it is represented as the empty tree.
Otherwise, the tree has a root. With the ...
Let's build a sequence of positive integers. The rule will be that the next number will be the smallest number which:
Hasn't already appeared in the sequence
It's absolute difference from the number preceding it wouldn't be equal to any previous absolute difference between consecutive elements....
String multiplication table
Given two strings, output every pairing of a character from the first string and a character from the second string, formatted into a rectangle
Example:
input:
hello world
output:
hw ew lw lw ow
ho eo lo lo oo
hr er lr lr or
hl el ll ll ol
hd ed ld ld od
You make han...
