Exported Data

Idiot Code-Golf

We don't seek the smartest, fastest, or even most resistant solution. If it works – it works.

Idiot Code-Golf

poldi1405 created this room.

This is the start of export of Idiot Code-Golf. Exported by ᠎ (@ta180m:exozy.me) at 2022/06/22.

Topic: We don't seek the smartest, fastest, or even most resistant solution. If it works – it works.

poldi1405 joined the room

poldi1405 set the main address for this room to #idiot-code-golf:matrix.org.

poldi1405 made the room public to whoever knows the link.

poldi1405 made future room history visible to all room members.

poldi1405 changed the room name to Idiot Code-Golf.

poldi1405 changed the topic to "We don't seek the smartest, fastest, or even most resistant solution. If it works – it works.".

Moritz joined the room

poldi1405 changed the power level of @moritz:moritz.sh from Default to Admin.

᠎ joined the room

🍀WinstonSmith2600⚡ joined the room

᠎

Hello world!

🍀WinstonSmith2600⚡

hello world

Moritz

Greetings, planet

Matrix Traveler (bot) joined the room

Moritz

up for leap year detection next?

᠎

sure, sounds fun

🍀WinstonSmith2600⚡

I might have to think for that

Moritz

These extra days occur in each year which is an integer multiple of 4 (except for years evenly divisible by 100, which are not leap years unless evenly divisible by 400).

That's enough to make code-gore

Moritz

123function isLeapYear(a) {
	return a%4!=0?false:a%400==0?true:a%100!=0?true:false;
}

(edited)

I call this piece: ternary operations do not impact legibility

(edited)

🍀WinstonSmith2600⚡

awesome

123#!/usr/bin/env bash
read -p "Enter year (YYYY): " y
[ $(($y%4)) -eq 0 -a $(($y%100)) -ne 0 -o $(($y%400)) -eq 0 ] && echo "$y is leap year" || echo "$y is not a leap year"

this isn't very legible either...

but yours is shorter so it wins

Moritz

not necessarily… stupidest solution wins

🍀WinstonSmith2600⚡

doh

Moritz

maybe ᠎ s solution is off the charts

🍀WinstonSmith2600⚡

well, yours is harder to read... which some think is stupid...

Moritz

i most certainly think so

🍀WinstonSmith2600⚡

but I like that so I need to add that to my bag of tricks....

Moritz

if i'd call the function something like cly(a) it would probably qualify as mathematician code

In reply to this message

please don't

🍀WinstonSmith2600⚡

it's not valid for bash

javascript?

Moritz

yes, that's javascript. but it also works in php and i think probably c(++)

🍀WinstonSmith2600⚡

I'm trying to translate into bash :)

᠎

In reply to this message

yep, I'm working on it right now

Moritz

i love this concept :D

᠎

My idea involves nesting the sine function inside itself 1024 times... Python's giving me SyntaxError: too many nested parentheses. Guess I'll have to use a different language!

Moritz

absolute madlad…

᠎

it's crazy but it actually works... All I have to do now is code it up...

Moritz

I mean since it's just a repeating sequence you could also let a simple script generate the sequence, put it in a map and access it at the relevant place, but that would be a half decent solution.

᠎

I spent way too much time on this...

It takes 23 seconds and 3GB of ram to compile this on my laptop

Enjoy!

1234567891011121314151617181920212223242526272829303132#include <stdio.h>
#include <math.h>
#define a(_) sin(_)
#define b(_) sin(a(_))
#define c(_) sin(b(_))
#define d(_) sin(c(_))
#define e(_) sin(d(_))
#define f(_) sin(e(_))
#define g(_) sin(f(_))
#define h(_) sin(g(_))
#define i(_) sin(h(_))
#define j(_) sin(i(_))
#define k(_) sin(j(_))
#define l(_) sin(k(_))
#define m(_) sin(l(_))
#define n(_) sin(m(_))
#define o(_) sin(n(_))
#define p(_) sin(o(_))
#define q(_) sin(p(_))
#define r(_) sin(q(_))
#define s(_) sin(r(_))
#define t(_) sin(s(_))
#define u(_) sin(t(_))
#define v(_) sin(u(_))
#define w(_) sin(v(_))
#define x(_) sin(w(_))
#define y(_) sin(x(_))
#define z(_) sin(y(_))
//self-documenting code
#define magic(_) pow(t(h(e(m(a(i(n(t(r(i(c(k(t(h(a(t(t(h(i(s(c(o(d(e(i(s(e(x(p(l(o(i(t(i(n(g(i(s(t(h(e(f(a(c(t(t(h(a(t(n(e(s(t(i(n(g(s(i(n(e(i(n(s(i(d(e(o(f(i(t(s(e(l(f(t(h(o(u(s(a(n(d(s(o(f(t(i(m(e(s(p(r(o(d(u(c(e(s(a(c(u(r(v(e(s(i(m(i(l(a(r(t(o(a(s(q(u(a(r(e(w(a(v(e(w(e(c(a(n(t(h(e(n(s(q(u(a(r(e(t(h(i(s(t(o(g(e(t(a(c(u(r(v(e(t(h(a(t(i(s(z(e(r(o(i(n(a(f(e(w(l(o(c(a(t(i(o(n(s(a(n(d(o(n(e(e(v(e(r(y(w(h(e(r(e(e(l(s(e(b(y(c(h(o(o(s(i(n(g(s(p(e(c(i(f(i(c(i(n(p(u(t(p(a(r(a(m(e(t(e(r(s(w(e(c(a(n(m(a(k(e(c(u(r(v(e(s(t(h(a(t(a(r(e(z(e(r(o(a(t(o(n(e(h(u(n(d(r(e(d(t(w(o(h(u(n(d(r(e(d(a(n(d(t(h(r(e(e(h(u(n(d(r(e(d(a(n(d(a(d(d(t(h(e(m(t(o(g(e(t(h(e(r(t(o(g(e(t(a(c(u(r(v(e(t(h(a(t(h(a(s(d(i(p(s(a(t(t(h(e(s(e(l(o(c(a(t(i(o(n(s(c(o(m(b(i(n(e(d(w(i(t(h(a(s(i(m(p(l(e(s(i(n(e(c(u(r(v(e(t(h(a(t(s(p(e(a(k(s(e(v(e(r(y(f(o(u(r(w(e(c(a(n(c(r(e(a(t(e(a(c(u(r(v(e(t(h(a(t(i(s(l(a(r(g(e(w(h(e(n(t(h(e(i(n(p(u(t(i(s(a(m(u(l(t(i(p(l(e(o(f(f(o(u(r(o(r(o(n(e(h(u(n(d(r(e(d(t(w(o(h(u(n(d(r(e(d(o(r(t(h(r(e(e(h(u(n(d(r(e(d(a(n(d(s(m(a(l(l(o(t(h(e(r(w(i(s(e(w(h(a(t(a(m(a(g(i(c(a(l(s(o(l(u(t(i(o(n(t(o(t(h(e(l(e(a(p(y(e(a(r(p(r(o(b(l(e(m(_)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))),2)
#define is_leap_year(_) cos(M_PI*_/2)+magic(M_PI*(_+100)/400)+magic(M_PI*(_+200)/400)+magic(M_PI*(_+300)/400)>1.000969//Don't ask why it's 1.00969
int main(){for(int i=0;i<=2021;++i)printf("Is %d a leap year? %s\n",i,is_leap_year(i)?"Yes":"No");}//UNLEASH THE MAGIC!!!

(edited)

🍀WinstonSmith2600⚡

I couldn't figure out how to compile it... errors with cc, gcc. tried cpp and it went crazy scrolling... no clue if said if there wa an error. but no a.out

᠎

It works for me with gcc ly.c -o ly -lm

It needs to be linked with the C math library

Andy Tang joined the room

Andy Tang

᠎: saw this on your github and decided to join up - is there any sort of rundown you (or any other) could give a newcomer?

🍀WinstonSmith2600⚡

bah, I knew I should have used a unicode delimiter instead of : .... someone used https://t.me/hex715C as their email....

᠎

Andy Tang: Hello! This is just a random room where we post stupid and overcomplicated programs to solve various problems.

We don't seek the smartest, fastest, or even most resistant solution. If it works – it works.

Andy Tang

Beautiful, if I know anything about my coding skills I'll probably be posting much in here 😅

🍀WinstonSmith2600⚡

hmmm, it compiled in 12 seconds here... woohoo, my computer is faster.. haha

᠎

On my server, it compiles in only 8 seconds, but then again, I just finished building it two weeks ago and it uses a fast CPU that came out last November

🍀WinstonSmith2600⚡

doh

᠎

Another fun problem: Compute the GCD of two numbers.
Here's a few examples to give you some ideas:

12int gcd(int a,int b){while(b)b^=a^=b^=a%=b;return a;}
int gcd(int a,int b){while(a&&b)a>b?a%=b:b%=a;return a+b;}

Moritz

In reply to this message

this pretty much embodies what this was about. unexpected solutions that are working and in a twisted way clever.

Moritz

12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394package main

import (
	"fmt"
	"math"
	"os"
	"strconv"
	"sync"
)

func main() {
	if len(os.Args) != 3 {
		fmt.Println("we need 2 numbers. usage: ./gcd 200 50")
		os.Exit(2)
	}
	a, err := strconv.Atoi(os.Args[1])
	if err != nil {
		fmt.Printf("whatever %s is… I can't make it an integer: %v", os.Args[1], err)
		os.Exit(1)
	}
	b, err := strconv.Atoi(os.Args[2])
	if err != nil {
		fmt.Printf("whatever %s is… I can't make it an integer: %v", os.Args[2], err)
		os.Exit(1)
	}

	fmt.Println(gcd(a, b))
}

func gcd(a, b int) int {
	if a == 0 || b == 0 {
		return 0
	}

	adiv := make(chan []int)
	bdiv := make(chan []int)

	go getDivisors(a, adiv)
	go getDivisors(b, bdiv)

	adivs := <-adiv
	bdivs := <-bdiv

	var gcd int

	for i := 0; i < len(adivs); i++ {
		for j := 0; j < len(bdivs); j++ {
			if adivs[i] == bdivs[j] && adivs[i] > gcd {
				gcd = adivs[i]
			}
		}
	}

	return gcd
}

func getDivisors(num int, out chan []int) {
	results := make(chan int, 4096)
	joined := make(chan struct{})
	var res []int
	var wg sync.WaitGroup

	go func(r chan int) {
		for i := range r {
			res = append(res, i)
		}
		joined <- struct{}{}
	}(results)

	concurrency := int(math.Ceil(float64(num) / 512))

	for i := 0; i < concurrency; i++ {
		wg.Add(1)
		go func(n, l, u int) {
			defer wg.Done()
			getDivisorsLimit(n, l, u, results)
		}(num, i*512+1, i*512+512)
	}

	wg.Wait()
	close(results)
	<-joined

	out <- res
}

func getDivisorsLimit(num, lowerBound, upperBound int, results chan int) {
	for i := lowerBound; i <= upperBound && i <= num; i++ {
		if num%i == 0 {
			results <- i
		}
	}
}

they call me the over-engineer

Moritz

᠎: thanks for making the repo

(edited)

Moritz

anyone else got something?

᠎

I'm working on another crazy trig program

Did you know that you can use sine to compute modulos?

Moritz

after seeing your last im curious

In reply to this message

i did not. is it faster than the usual %?

᠎

probably slower since it trig functions are generally slower

Moritz

otherwise the compiler would probably use it

(edited)

᠎

Getting precision problems right now...

Moritz

what kind of precision problems are we talking? like of by 1/1000000th or off by 1?

᠎

This is what I have so far: (in c++)

123#include <bits/stdc++.h>
int gcd(int a,int b){while(a^b)std::swap(b,a=b*(M_PI/2-atan(cos(M_PI*a/b)/sin(M_PI*a/b)))/M_PI+1e-9);return a;}
int main(){std::cout<<gcd(126,84);}

(edited)

I'm adding 1e-9 to account for precision errors

"Beware of bugs in the above code; I have only proved it correct, not tried it."

Moritz

ngl. this level of math-fuckery is waay beyond me. but it's certainly impressive

᠎

We should do something in bash next

Moritz

yes, this way winston can astonish us

᠎

what about writing a script to toggle the multilib repository?

Moritz

12#!/bin/sh
grep '^\[multilib]' /etc/pacman.conf >/dev/null && sudo vim /etc/pacman.conf '+%s/^\(\[multilib]\)\n\(.*\)/#\1\r#\2' +x || sudo vim /etc/pacman.conf '+%s/^#\(\[multilib\]\)\n#\(.*\)/\1\r\2' +x

᠎

Nice one!

Moritz

I hope using the advanced automation-framework vim is acceptable :P

᠎

In reply to this message

math is the secret to programming success

Moritz

to me it's the secret to unmaintainable code. sure, my code may be 3 cpu cycles slower but at least it's maintainable (sometimes)

Moritz

In reply to this message

🍀WinstonSmith2600⚡: wanna give it a shot?

᠎

I don't know if this is allowed, but...

12#!/bin/sh
wget https://raw.githubusercontent.com/Ta180m/Idiot-Code-Golf/main/toggle-multilib/vim.sh && chmod +x vim.sh && ./vim.sh && rm vim.sh

Hope you have an internet connection!

᠎

In reply to this message

This is one of my favorites

Moritz

In reply to this message

Genius! 😆

In reply to this message

What the actual fuck?

Moritz

I just remembered thisand I think I can improve my gcd solution a bit

Moritz

yup… it's cursed now: https://github.com/Ta180m/Idiot-Code-Golf/blob/main/gcd/gcd.go

᠎

GitHub discussions might work better for organizing these problems

although I would personally prefer using an open source platform

Andy Tang

are we planning on coming up with some number of problem prompts?

᠎

I'm not sure

If you guys want, we can keep on posting problems and solutions in this room

But if more people join, it'll quickly get hard to manage

Moritz

i think GH discussions might be a better fit and idle chatter here

᠎

yeah, that's what I think too

We can also upvote which solution we like the best

Andy Tang set a profile picture

axz2 joined the room

᠎

New problem to test if GitHub discussions works well

Moritz

i kinda don't want to try my solution to the new problem

wait, I can setup an ubuntu machine and kill that… that sounds like fun. hearing it's last gargling noises before it inevitably embraces death

᠎

That's what I'm doing too

᠎

Unfortunately my submission hasn't corrupted the VM's disk yet

Moritz

i almost feel bad for publishing my cringefest later

Moritz

it kills the system… so much is certain

and i forgot to create a restore point

Moritz

᠎: I don't think mine is really qualified for this challenge… while it certainly "shuts down" the computer, it's more of a destruction script that makes yours the winner if no one else gives it a shot

(edited)

᠎

yeah, I ran your script on a VM and a few minutes later, it's still "up"

Media omitted

Moritz

tbh. just because the screen is on, does not mean the system is running

but yeah… probably missed the mark

screwed around too much

(if you increase the specs of your vm it should technically shut down in the end)

shutdown with an actual crash that is

Andy Tang

hmm

do we have to crash it

or is it ok to just get it to shut down normally

Moritz

sure it's okay

the only "limitation" is that you have to do it in a dumb/unexpected way… a kernel panic is a dumb way of shutting down a system imho

Andy Tang

might play around with this sometime then, although I'm evidently quite new to this

I have some thoughts on dumb solutions ;)

Moritz

i'm curious

᠎

good thing I had a snapshot

that script absolutely wrecked the VM

Andy Tang

mission accomplished, then :0

Moritz

It's against computer addiction

᠎

We should advertise this room more on Arch Linux and get some more people to join

Moritz

i agree, but i think we should check back with heftig first

(edited)

Moritz invited Haiku Bot

Haiku Bot joined the room

Andy Tang

is this that one bot that detects when you write a haiku in message

Haiku Bot

In reply to this message

is this that one bot
that detects when you write a
haiku in message

Andy Tang

or is it a random user

okay guess i solved that question

Moritz

In reply to this message

no better way to test it out

᠎

You should invite sedbot

Moritz invited sed(1)

sed(1) joined the room

᠎

s/sedbot/haikubot

sed(1)

In reply to this message

You should invite [haikubot](https://t2bot.io/sedbot/)

᠎

s/haikubot/sedbot

sed(1)

In reply to this message

s/sedbot/sedbot

Moritz

s/s/b

sed(1)

In reply to this message

no better way to tebt it out

᠎

s/s/h

sed(1)

In reply to this message

h/haikubot/sedbot

Moritz

something easy next? I'd suggest: https://github.com/Ta180m/Idiot-Code-Golf/discussions/5#discussioncomment-617093

᠎

Sure, that sounds good.

᠎

I guess you can make a new Q/A on GitHub since you probably understand the question best

Moritz

https://github.com/Ta180m/Idiot-Code-Golf/discussions/6

᠎

I think I'm going to try to use digits of pi to generate "random" numbers

https://en.wikipedia.org/wiki/Nothing_up_my_sleeve_number

Moritz

I'm thinking of making the transformation deterministic just because I dont like non-deterministic code

᠎

nondeterministic polynomial time

Moritz

for some reason I get chills whenever you write some maths stuff… might be university-ptsd

(edited)

᠎

I enjoy math way too much...

Moritz

i could see that in your solutions… those really stretched the boundary between genius and insanity

never before have I seen something so intriguing that at the same time disgusted me to such a degree… I think you really nailed this golf-course

(edited)

᠎

My new favorite C trick: Reinterpreting floats as integers, such as *(int*)&PI, so I can use the bits in the floating point representation of

\pi

to generate random numbers!

(edited)

᠎

Media omitted

I made a really bad icon for this room in two minutes using GIMP

Moritz

Message deleted

Moritz

Media omitted

can't add it

᠎

hmmm, does it work if you download the image and try and upload it that way?

Moritz has allowed guests to join the room.

Moritz made the room public to whoever knows the link.

Moritz made future room history visible to anyone.

Moritz changed the room avatar to

Moritz

nice :D the globe matches up with the exclamation point

᠎

Added an interesting prime number problem

᠎

I made a nice Python one-liner: print([i for i in range(n, 2*n) if all(i % j != 0 for j in range(2, i))])

Unfortunately, it seems too nice

Moritz

yes… waaay too nice

I'll do spongebob and prime today or tomorrow… currently a bit too much work

᠎

I think this is a little bit better:

123456n=int(input())
print([i for i
in range(n,2*n
) if all(not i
%j==0 for j in
range(2, i))])

When your screen is only wide enough to fit 14 characters...

᠎ changed their profile picture

Ta180m changed their display name to

᠎ removed their display name ()

@ta180m:exozy.me set their display name to

changed their display name to ᠎

᠎ changed their display name to

changed their display name to ᠎

᠎ changed their profile picture

᠎

I added a classic problem to the GitHub discussions

Moritz

Uhh, I've got an idea

Moritz

finally got around to posting my solution to the quine and mocking spongebob… still thinking of a dumb way to do the prime thing without brute forcing it

Moritz

i just had a very dumb idea… using the power of the web!

Moritz

okay… i "solved" it

᠎

In reply to this message

Nice one

Media omitted

The icon for Go files in KDE looks so cursed

Moritz

a bit… yes

should have taken a bit more of the gopher tbh

᠎

Media omitted

Moritz

Media omitted

should have taken the entire mascot

Moritz

https://github.com/Ta180m/Idiot-Code-Golf/discussions/9 I just created a new problem

᠎

I wrote my first code that only works with C++ 20!

It will compile with g++ --std=c++17 though since gcc implements some things outside of the standard

But technically, my code uses concepts, something only officially added in the C++ 20 standard

Moritz

pretty nice

didn't block on write though but afaik threading in c sucks so that's forgivable :D

probably too real-world for something like this. I mean, my solution could actually be useful… that's not quite what I wanted

᠎

Rewrote my code using operator overloading

It's one of those C++ features that's so easy to abuse

Moritz

not gonna lie… that >> and << look like pretty intuitive operators for channels

(edited)

pretty neat

makes me almost want to learn C(++)… almost

Moritz

https://teddit.net/r/golang/comments/n11l66/just_because_you_can_does_not_mean_that_you/

We couldn't possibly top this, right?

᠎

I added another problem and wrote a short solution with a crazy for loop.

Moritz

I first thought I was meant to reimplement a for loop without a loop and was wrecking my brain. But I can just throw best practices out of the window. Now that's what I'm good at

᠎

I added discussions for the first three problems on GitHub so other people can solve the problems too.

᠎

Brute force can solve anything! I'm going to have some fun with this one.

🍀WinstonSmith2600⚡ left the room

Analog astronaut joined the room

᠎

Wow, just realized it's the 1-year anniversary of this room now! 🎉 (in UTC at least)

well, that was a lot of fun last year

An exploring bot joined the room

An exploring bot left the room

An exploring bot joined the room

An exploring bot left the room

Idiot Code-Golf

Tue, Apr 13 2021

Wed, Apr 14 2021

Thu, Apr 15 2021

Fri, Apr 16 2021

Sat, Apr 17 2021

Sun, Apr 18 2021

Mon, Apr 19 2021

Tue, Apr 20 2021

Thu, Apr 22 2021

Sat, Apr 24 2021

Sun, Apr 25 2021

Tue, Apr 27 2021

Wed, Apr 28 2021

Thu, Apr 29 2021

Fri, Apr 30 2021

Wed, May 5 2021

Sat, May 8 2021

Wed, Sep 22 2021

Tue, Apr 12 2022

Mon, Apr 18 2022

Sun, May 1 2022