1
Background
A spanning tree (Wikipedia) of an undirected graph is a subgraph that is a tree which includes all of the vertices of the original graph. The following is an example of a spanning tree of a 4-by-4 grid graph.
Task
Given two positive integers w and h, output any valid spanning tree...
Format a swedish telephone number
On the Check the validity of a 10-digit telephone number challenge, some people in the comments were talking about verifying phone numbers that didn't follow the rather rigid NANP format. Well, technically they were talking about british phone numbers, but I don...
This essentially duplicates \substack, but adding an alignment point.
\documentclass{article}
\usepackage{amsmath}
\makeatletter
\newcommand{\subalign}[1]{%
\vcenter{%
\Let@ \restore@math@cr \default@tag
\baselineskip\fontdimen10 \scriptfont\tw@
\advance\baselineskip\fontdimen12 \...
Not a new one:
Input
N, being n, 0 ≤ n ≤ 5.
Output
N times "Hello World."
Example:
Input
3
Output
Hello World.
Hello World.
Hello World.
These 2 are my best solutions:
First
public class Out
{
public static void main(String[] a) throws Exception
{
java.io.Output...
Find the Longest Even Length Word
Consider a string, sentence, of space-separated words where each word is a substring consisting of English alphabetic letters only. We want to find the first word in the sentence having a length which is both an even number and greater than or equal to the lengt...
Let's say I have 3 points: A(Ax, Ay), B(Bx, By), C(Cx, Cy). I want to draw the altitude of triangle ABC through A (for example), where an altitude of a triangle is a line segment from a vertex perpendicular to the opposite side. How can I find the coordinates of this opposite side?
ASCII texturing
code-golfascii-art2d
Write a function or a full program that apply an ASCII texture T to a 2d shape S .
Inputs : Shape, texture, dimensions(optionally).
Both Shape and Texture can be given by any convenient method (matrix, array of strings or string whit newlines)
Shape data...
