PPCG user and elected mod, @Dennis just became the second ever user to earn over 100k rep!
This is a totally original idea, that I did not get from anybody else, but let's make a challenge based off of his user ID, 12012 as a tribute!
Looking at it, you'll notice that there are two distinct "...
In preparation for the AP Computer Science AP Test (Java), our teacher has been giving us FRQs from previous years for practice.
My friend and I were golfing this during class today and got it as short as we could, but I'd like to see if there are any shorter solutions any of you can come up wit...
The Challenge
It's quite simple really, sort a list of numbers.
Details
You must sort a list of numbers in ascending order, without using any built-in sorting functions/libraries/etc (i.e. list.sort() in Python).
Input/output can be done in any method you choose, as long as it is human reada...
This challenge is simply to return a list of lists of integers, similar to the Python range function, except that each successive number must be that deep in lists.
Rules:
Create a program or a non-anonymous function
It should return or print the result
The result should be returned in a list ...
Priority Sorting
This challenge is rather simple, given two arrays a and b, use b to sort a such that:
The index of elements in a denote that element's priority in b.
If any element in a does not exist in b or the current sorted result, it is added to the result.
For instance, given:
a = ["...
Ruby, 22 bytes
->a{[*a.min..a.max]&a}
Builds an array out of the range between the minimum and maximum elements of the input array. Returns the intersection between the two arrays.
Consider a connected undirected graph. A matching set of edges on this graph is defined as a set of edges such that no two edges in the set share a common vertex. For example, the left figure denotes a matching set in green, while the right figure denotes a non-matching set in red.
A matching ...
Palindromic Factorial!
Many people know what the factorial function does: multiplies a number by all the natural numbers beneath it. But a palindromic factorial is different: it multiplies itself by all the numbers below it, both upwards and downwards. For example, to find the palindromic factor...
