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Write the shortest program possible that traps the mouse cursor inside an upward pointing equilateral triangle with a side length of 274 pixels and a centroid at the exact middle of the screen. (Trian …

Shtriped, 33 bytes e : t : . d : i : p : . . p : This prints the 0 or the infinite stream of 1's without any trailing newlines or spaces. Explanation: e : \ initialize a variable named ":" t : …

Python, 102 p=lambda s:p(s[1:])+[x+[s[0]]for x in p(s[1:])]if s else[s];c=lambda s,k:[x for x in p(s)if len(x)==k] Call c to run: c([5, 6, 7], 2) => [[6, 7], [5, 7], [5, 6]] It gets all the p …

A standard road intersection contains 4 sidewalk corners and four crosswalks connecting them. It could also have 2 diagonal walks. sRRRRs iOOOOi dAAAAd eDDDDe side0----1walk ROAD|\ / …

The video game Minecraft is all about placing and removing different types of blocks in the 3D integer lattice that makes up the virtual world. Each lattice point can contain exactly one block or be e …

Write a program that outputs the contents of the first HTML <code>...</code> block of the answer to this question that is just above yours when the answers are sorted by votes. Output Top! if you are …

If someone facing north at point A in this grid wanted directions to follow the green path (as they can only follow gridlines) to point B you might tell them: Go North, North, West, East, East, Sou …

The video game Minecraft is all about placing and removing different types of blocks in the 3D integer lattice that makes up the virtual world. Each lattice point can contain exactly one block or be e …

Take a 2-dimensional grid and draw a number of line segments on it to represent mirrors. Now pick a point to place a theoretical laser and an angle to define the direction it's pointing. The question …

Consider the digits of any integral base above one, listed in order. Subdivide them exactly in half repeatedly until every chunk of digits has odd length: Base Digits Subdivided Digit …

Python 2.7, 124 from fractions import gcd;x,y=map(int,raw_input().split('/'));g=gcd(x,y);print'%d/%d'%(x/g,y/g)if g!=1 else'Already reduced' Very simple solution, though I know it would be shorter in …

When you search for something on Google, it conveniently gives a message near the top of the page saying something like About 53,000,000 results (0.22 seconds). (The numbers change depending on what w …

Python 2, 163 bytes def f(b,e='([{<)]}>',q=range(4)): b=[b[b.index(e[j])+1:b.index(e[j+4])]for j in q] print sum(sum(abs(b[k].count(e[j])-b[k].count(e[j+4]))for j in q)for k in q)/2 This looks at …

Shtriped, 20 bytes e ) " r ) s ) " " This cheekily demonstrates that nearly any printable ASCII string is a valid identifier in Shtriped. How it works: e ) \ declares a variable named ) " \ …

Write a program that outputs the total number of characters and the frequency of each character in its source and its output. You must follow the format illustrated in the example. Example If your c …