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Jelly, 8 bytes ṖUs2UṭµF Try it online! -1 byte thanks to caird coinheringaahing (Also posted on Stack Exchange by myself) ṖUs2UṭµF Main Link Ṗ pop (remove last element; for numbe...
BQN, 8 bytesSBCS ⍒↕+2|⊢+↕ Run online! The solution itself is an 8-train, so its evaluation order is given by the sequence 7 5 6 3 4 1 2 0: first the rightmost ↕, then the ⊢, then the + between...
I have this challenge in Code Golf and I wonder if I can repost it here for more users to come, and also continue making these since I actually like them. Can I post this challenge to Codidact?
Jelly, 6 bytes _ÆṣṠ)Ġ Try it online! In order of abundant, perfect, deficient. _ÆṣṠ)Ġ Main Link ) For each from 1 to N _ Subtract Æṣ The proper divisor sum Ṡ Sign ...
BQN, 21 bytesSBCS (¬·×-+´·/0=↕⊸|)¨⊸⊔1+↕ Run online! Mostly one big train used to find the appropriate group for each number, to be used with Group (⊔). The combining functions in a train norma...
Vyxal C, 8 bytes kA¦ømƛøm Try it Online! Explanation: kA # Push the alphabet ¦ # Prefixes øm # Palindromize list without duplicating middle ƛ # For each: ...
Japt -R, 16 15 14 bytes pÔ¬Ëú°EDùEÃÆpÔ Try it pÔ¬Ëú°EDùEÃÆpÔ :Implicit input of string p :Append Ô : Reverse ¬ :Split Ë ...
What tips are there in fastest code, or what I like to call code speeding, challenges in Python?
Haskell, 50 bytes [take 9$drop i$cycle[1..9]|i<-[0,3,6,1,4,7,2,5,8]] Try it online!
Seems to be an issue with the ordering (across languages) when "Group by language" is set. When I first load the page, they are ordered with the most recent post first. If I then uncheck "Group by ...
JavaScript (Node.js), 99 96 69 bytes s=>([a,b,c,d]=s.match(/-?\d+/g),a*c-b*d+(a=a*d+b*c,a<0?'':'+')+a+'i') Try it online! This regex is probably the best way to get the numbers. Also, f...
Few QoL improvements can be made: Some trivial challenges(i.e. "Hello World!") get many, many answers, so the leaderboard should show a scrollbar beyond some point(after the first 10 submissions, ...
Given two strings, I define their product as follows: If any of the two strings is empty, the product is the empty string. If the second string consists of a single character, the result ...
Jelly, 2 bytes «þ Try it online! Technically speaking, this needs to be a full program, due to how Jelly's smash printing works, but it can get away with being run as a function over test case...
BQN, 3 bytes Anonymous tacit infix function, taking the second string as left argument and the first string as right argument. ⥊⌊⌜ ⌊⌜ minimum table ⥊ deshape (flatten) BQN treats characters ...
Background A House of I I went on an adventure Grabbed resources and making deeds Like start to work on the materials To build the shelter I need It was a marvelous one At least in the eyes ...
Japt -x, 6 5 bytes Takes input as an array of integers p!UdÍ Try it p!UdÍ :Implicit input of array U p :Push ! : Logical NOT of Ud : Any true (not zero) when ...
Zsh, 25 bytes >2 <$@&&<<<5||<<<$[$1+$2] Attempt This Online! Explanation: >2;<$@: if both arguments are 2: &&<<<5: then print 5 ||&...
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! ...
