Posts by user
Scala, 52 bytes Stream.from(1).filter(x=>x%(x+"":\0)(_+_-48)<1).take Try it in Scastie! Woo, 3 deprecation warnings! (okay, one of them could be fixed but I like to live dangerously) St...
Zsh, 61 bytes n=2;s=s=%q\;printf\ n=\$n\$n\\\;\$s\ \$s;printf n=$n$n\;$s $s Attempt This Online! A trivial modification of this quine: s=s=%q\;printf\ \$s\ \$s;printf $s $s. n goes from 2 to 22 ...
Scala, 15 bytes '#'.toFloat/'F' Try it in Scastie! Characters in Scala kinda get casted to integers. This is usually annoying, but it's useful when golfing. # is 35 and F is 70, and the .toFlo...
Scala 3, 553 bytes package a import E.Z as Z import E.* sealed trait T open class Y{export E.Z as Q} enum E[+A]derives CanEqual: case Z end E private abstract final class X extends AnyRef...
Scala, 41 bytes x=>2 to x forall(d=>x%d+math.sqrt(d)%1>0) Try it online! Pretty straightforward
Vyxal, 24 bytes \.€hEb:L8-0wẋf$J0ḟkA5Ẏ$i Try it Online! This is absolutely abysmal but whatever. A lot of bytes are taken up by trying to pad the list with zeroes (ẋ was buggy or something so ...
Abuse anonymous classes Warning: This only works in very specific circumstances, and I've never actually needed it. Instead of defining a method outside of your method, you can make an instance o...
Abuse the C-like array syntax If you ever have to declare two variables, one of type X and the other of type X[], instead of two statements, you can declare them together using this atrocious synt...
I think "Dangerous" could perhaps stay on. "Outdated" would probably be better off replaced with "Invalid" or something of that sort. I don't think we need "Works for me" or an analog of it at all:...
Scala, 60 bytes _.map(_ map "".+).reduce(_.zipAll(_,"","")map(_+_)).mkString Try it in Scastie! First, _.map(_ map "".+) turns every string into a list of strings containing a single character...
Scala, 50 bytes Stream.iterate(_)(x=>Seq(x/2,3*x+1)(x%2))indexOf 1 Try it in Scastie!
Python 3, 46 bytes Saved 8 bytes thanks to Shaggy! lambda n:[n-i*i or exit(1)for i in range(1+n)] Try it online! Python 3.8 (pre-release), 50 54 52 bytes Fixed a silly mistake thanks to Sh...
Scala, 64 bytes c=>_.sortBy(x=>c.map(_(x)))(math.Ordering.Implicits.seqOrdering) Try it in Scastie! A rather crude answer, but I'll come back later to golf it. It's rather simple, though...
Python 3.8 (pre-release), 106 95 bytes Saved 11 bytes thanks to Peter Taylor! f=lambda m:sum((-1)**i*x*f([r[:i]+r[i+1:]for r in m[1:]])for i,x in enumerate(m[0]))if m else 1 Try it online! ...
Scala, 130 125 bytes Saved 5 bytes by returning 1 like Hakerh400's great answer def f(m:Seq[Seq[Double]]):Double=if(m.size<1)1 else(m.indices:\.0){(i,a)=>m(0)(i)*f(m.tail.map(r=>r.take(i...
Scala, 25 bytes a=>_.flatMap(a map _.min) Try it in Scastie! Pretty trivial solution, but here's a bad explanation anyway: //a is the first string a =>_.flatMap(a map _.min) //b is th...
Scala, 90 89 88 bytes Saved 2 bytes thanks to Shaggy n=>1 to n map{x=>val s=if(x<2)"╔╦╗"else if(x<n)"╠╬╣"else"╚╩╝";s(0)+(""+s(1))*(n-3)+s(2)} Try it in Scastie! I feel like there'...
Python 3, 46 bytes f=lambda p,x,a=0:p and f(p[1:],x,a*x+p[0])or a Try it online! Takes input reversed.
Python 3.8 (pre-release), 39 bytes print(x:=input(),y:=input()) print(y,x) Try it online!
Scala, 119 bytes Saved 26 bytes after porting Moshi's solution! _ sortBy("y gree br sc bla oc pe rub ol v f li go ch m cre c s ro a l ru g pu w p o b"split " "indexWhere _.startsWith) Original...
Task I often need to find the factorial of a number or the sum of all numbers up to a number when cheating on math tests. To help me with this, your task is to write $F$, a generalized version of ...
Scala, 42 bytes object>extends App{print("Hello, World!")} Attempt This Online!
