code-golf string
String Stairs
Disclaimer: This is the first challenge I propose. Any and all feedback is welcome. If this is a duplicate, please point it out. I'm currently at work, so I'll edit this post later today with more information if necessary.
Goal
The goal of this challenge is to, ...
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Deep Search a list code-golf decision-problem
For this challenge, a list is considered valid if and only if it consists entirely of integers and valid lists (recursive definitions \o/). For this challenge, given a valid list and an integer, return a list of all depths at which the integer can be...
JavaScript (ES6), 73 bytes
f=
s=>s.replace(/...(.*)](.*)[^]+ (.*)[^]+: (.*) ".*/,"$1$2: [`$3`]($4)")
<textarea rows=8 cols=75 oninput=o.textContent=this.value==f(this.value)?``:f(this.value)></textarea><pre id=o>
Digital Calendar
Given a date, output the X and Y position of the current day of the date on a digital calendar. The digital calender is sort of the calender that gets shown when you click on your computers clock (atleast on windows), and it looks something like this:
If we assume that the gi...
Introduction
Nodes in tree structures (e.g. headings in a long document, law paragraphs, etc.) are often created by assigning a specific header level (h1, h2, etc.) to each item, but outputted with additional node numbers for each level (1., 1.1., etc.), e.g.:
1. Intro (h1)
1.1. About this (h2)...
Got Your PIN!
code-golfcombinatorics math sequence
I bet I can write down your PIN! 0000 0001 0002 0003 ... 9999.
Task: Write a program that outputs a string containing all possible four digit PINs.
The string should not contain any whitespace (trailing newline is okay).
Score: Length of p...
Count bicubic graphs
fastest-code graph-theory sequence
This question assumes basic knowledge of graph theory terminology.
A cubic graph is a simple graph whose vertices each have exactly 3 edges. A bipartite graph is a vertex whose vertices can be divided into two disjoint sets such that ever...
